./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba --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 64bit --witnessprinter.graph.data.programhash 96d9860a7686f708af2c69f8c9732693665f35b4386bdf987f4dd5e89313b9fb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:36:08,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:36:08,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:36:09,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:36:09,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:36:09,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:36:09,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:36:09,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:36:09,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:36:09,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:36:09,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:36:09,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:36:09,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:36:09,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:36:09,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:36:09,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:36:09,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:36:09,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:36:09,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:36:09,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:36:09,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:36:09,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:36:09,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:36:09,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:36:09,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:36:09,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:36:09,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:36:09,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:36:09,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:36:09,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:36:09,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:36:09,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:36:09,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:36:09,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:36:09,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:36:09,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:36:09,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:36:09,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:36:09,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:36:09,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:36:09,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:36:09,088 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:36:09,132 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:36:09,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:36:09,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:36:09,134 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:36:09,135 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:36:09,135 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:36:09,135 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:36:09,135 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:36:09,136 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:36:09,136 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:36:09,137 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:36:09,137 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:36:09,138 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:36:09,138 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:36:09,138 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:36:09,138 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:36:09,139 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:36:09,139 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:36:09,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:36:09,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:36:09,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:36:09,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:36:09,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:36:09,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:36:09,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:36:09,142 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:36:09,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:36:09,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:36:09,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:36:09,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:36:09,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:36:09,144 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:36:09,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:36:09,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:36:09,145 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:36:09,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:36:09,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:36:09,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:36:09,147 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_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96d9860a7686f708af2c69f8c9732693665f35b4386bdf987f4dd5e89313b9fb [2022-11-22 01:36:09,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:36:09,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:36:09,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:36:09,520 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:36:09,521 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:36:09,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c [2022-11-22 01:36:12,734 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:36:13,164 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:36:13,165 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c [2022-11-22 01:36:13,179 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/data/d2cf2b200/ded7900ddbf142e69bb12014d6e14de9/FLAG9b5c8a54e [2022-11-22 01:36:13,195 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/data/d2cf2b200/ded7900ddbf142e69bb12014d6e14de9 [2022-11-22 01:36:13,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:36:13,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:36:13,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:36:13,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:36:13,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:36:13,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:36:13" (1/1) ... [2022-11-22 01:36:13,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b287d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:13, skipping insertion in model container [2022-11-22 01:36:13,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:36:13" (1/1) ... [2022-11-22 01:36:13,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:36:13,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:36:13,572 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_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c[1107,1120] [2022-11-22 01:36:13,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:36:13,951 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:36:13,964 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_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c[1107,1120] [2022-11-22 01:36:14,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:36:14,229 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:36:14,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:14 WrapperNode [2022-11-22 01:36:14,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:36:14,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:36:14,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:36:14,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:36:14,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:14" (1/1) ... [2022-11-22 01:36:14,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:14" (1/1) ... [2022-11-22 01:36:14,464 INFO L138 Inliner]: procedures = 15, calls = 102, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1472 [2022-11-22 01:36:14,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:36:14,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:36:14,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:36:14,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:36:14,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:14" (1/1) ... [2022-11-22 01:36:14,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:14" (1/1) ... [2022-11-22 01:36:14,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:14" (1/1) ... [2022-11-22 01:36:14,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:14" (1/1) ... [2022-11-22 01:36:14,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:14" (1/1) ... [2022-11-22 01:36:14,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:14" (1/1) ... [2022-11-22 01:36:14,582 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:14" (1/1) ... [2022-11-22 01:36:14,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:14" (1/1) ... [2022-11-22 01:36:14,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:36:14,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:36:14,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:36:14,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:36:14,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:14" (1/1) ... [2022-11-22 01:36:14,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:36:14,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:36:14,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:36:14,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:36:14,720 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 01:36:14,721 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 01:36:14,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:36:14,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:36:14,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:36:14,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:36:14,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:36:14,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:36:15,258 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:36:15,260 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:36:18,599 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:36:18,943 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:36:18,943 INFO L300 CfgBuilder]: Removed 19 assume(true) statements. [2022-11-22 01:36:18,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:36:18 BoogieIcfgContainer [2022-11-22 01:36:18,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:36:18,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:36:18,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:36:18,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:36:18,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:36:13" (1/3) ... [2022-11-22 01:36:18,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41803cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:36:18, skipping insertion in model container [2022-11-22 01:36:18,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:36:14" (2/3) ... [2022-11-22 01:36:18,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41803cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:36:18, skipping insertion in model container [2022-11-22 01:36:18,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:36:18" (3/3) ... [2022-11-22 01:36:18,960 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c [2022-11-22 01:36:18,981 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:36:18,982 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:36:19,046 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:36:19,054 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;@2e7b2f58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:36:19,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:36:19,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 30 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-22 01:36:19,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-22 01:36:19,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:36:19,070 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:36:19,071 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:36:19,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:36:19,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1432321088, now seen corresponding path program 1 times [2022-11-22 01:36:19,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:36:19,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691736990] [2022-11-22 01:36:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:36:19,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:36:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:36:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-22 01:36:20,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:36:20,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691736990] [2022-11-22 01:36:20,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691736990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:36:20,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:36:20,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:36:20,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470634207] [2022-11-22 01:36:20,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:36:20,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:36:20,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:36:20,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:36:20,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:36:20,367 INFO L87 Difference]: Start difference. First operand has 37 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 30 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-22 01:36:21,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:36:21,541 INFO L93 Difference]: Finished difference Result 72 states and 119 transitions. [2022-11-22 01:36:21,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:36:21,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 27 [2022-11-22 01:36:21,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:36:21,552 INFO L225 Difference]: With dead ends: 72 [2022-11-22 01:36:21,553 INFO L226 Difference]: Without dead ends: 37 [2022-11-22 01:36:21,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:36:21,561 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:36:21,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-22 01:36:21,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-22 01:36:21,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-22 01:36:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-22 01:36:21,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 59 transitions. [2022-11-22 01:36:21,611 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 59 transitions. Word has length 27 [2022-11-22 01:36:21,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:36:21,611 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 59 transitions. [2022-11-22 01:36:21,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-22 01:36:21,612 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 59 transitions. [2022-11-22 01:36:21,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-22 01:36:21,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:36:21,614 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:36:21,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:36:21,614 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:36:21,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:36:21,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1523799713, now seen corresponding path program 1 times [2022-11-22 01:36:21,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:36:21,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722096763] [2022-11-22 01:36:21,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:36:21,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:36:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:36:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-22 01:36:22,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:36:22,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722096763] [2022-11-22 01:36:22,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722096763] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:36:22,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653444172] [2022-11-22 01:36:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:36:22,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:36:22,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:36:22,238 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:36:22,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:36:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:36:22,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:36:22,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:36:22,940 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-22 01:36:22,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:36:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 01:36:22,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653444172] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:36:22,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:36:22,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-11-22 01:36:22,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435653034] [2022-11-22 01:36:22,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:36:22,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:36:22,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:36:22,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:36:22,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:36:22,989 INFO L87 Difference]: Start difference. First operand 37 states and 59 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-22 01:36:24,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:36:24,044 INFO L93 Difference]: Finished difference Result 70 states and 112 transitions. [2022-11-22 01:36:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:36:24,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 28 [2022-11-22 01:36:24,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:36:24,046 INFO L225 Difference]: With dead ends: 70 [2022-11-22 01:36:24,046 INFO L226 Difference]: Without dead ends: 38 [2022-11-22 01:36:24,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:36:24,048 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:36:24,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 01:36:24,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-22 01:36:24,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-22 01:36:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-22 01:36:24,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2022-11-22 01:36:24,058 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 28 [2022-11-22 01:36:24,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:36:24,059 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2022-11-22 01:36:24,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-22 01:36:24,059 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2022-11-22 01:36:24,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-22 01:36:24,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:36:24,061 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:36:24,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:36:24,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:36:24,271 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:36:24,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:36:24,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1178371353, now seen corresponding path program 1 times [2022-11-22 01:36:24,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:36:24,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468160161] [2022-11-22 01:36:24,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:36:24,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:36:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:36:24,842 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 01:36:24,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:36:24,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468160161] [2022-11-22 01:36:24,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468160161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:36:24,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792504422] [2022-11-22 01:36:24,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:36:24,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:36:24,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:36:24,851 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:36:24,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:36:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:36:25,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:36:25,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:36:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 01:36:26,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:36:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 01:36:26,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792504422] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:36:26,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:36:26,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-11-22 01:36:26,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897418485] [2022-11-22 01:36:26,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:36:26,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:36:26,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:36:26,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:36:26,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:36:26,048 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-22 01:36:26,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:36:26,604 INFO L93 Difference]: Finished difference Result 73 states and 116 transitions. [2022-11-22 01:36:26,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:36:26,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29 [2022-11-22 01:36:26,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:36:26,605 INFO L225 Difference]: With dead ends: 73 [2022-11-22 01:36:26,606 INFO L226 Difference]: Without dead ends: 39 [2022-11-22 01:36:26,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:36:26,607 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:36:26,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:36:26,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-22 01:36:26,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-22 01:36:26,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-22 01:36:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 61 transitions. [2022-11-22 01:36:26,616 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 61 transitions. Word has length 29 [2022-11-22 01:36:26,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:36:26,616 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 61 transitions. [2022-11-22 01:36:26,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-22 01:36:26,617 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 61 transitions. [2022-11-22 01:36:26,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-22 01:36:26,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:36:26,618 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:36:26,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-22 01:36:26,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:36:26,830 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:36:26,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:36:26,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1362070592, now seen corresponding path program 1 times [2022-11-22 01:36:26,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:36:26,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376775117] [2022-11-22 01:36:26,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:36:26,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:36:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:36:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 01:36:27,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:36:27,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376775117] [2022-11-22 01:36:27,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376775117] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:36:27,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392918319] [2022-11-22 01:36:27,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:36:27,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:36:27,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:36:27,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:36:27,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:36:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:36:28,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-22 01:36:28,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:36:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 01:36:28,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:36:28,856 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 01:36:28,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392918319] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:36:28,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1416763745] [2022-11-22 01:36:28,881 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-22 01:36:28,881 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:36:28,886 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:36:28,892 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:36:28,893 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:36:29,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:36:29,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-22 01:36:29,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-11-22 01:36:30,158 INFO L321 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2022-11-22 01:36:30,159 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 652 treesize of output 659 [2022-11-22 01:36:31,513 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 41 treesize of output 37 [2022-11-22 01:36:31,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:36:31,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:36:31,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-11-22 01:36:32,593 INFO L321 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2022-11-22 01:36:32,594 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 492 treesize of output 499 [2022-11-22 01:36:33,596 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 41 treesize of output 37 [2022-11-22 01:36:33,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:36:33,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:36:34,322 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 41 treesize of output 37 [2022-11-22 01:36:35,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:36:35,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 96 [2022-11-22 01:36:35,459 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 41 treesize of output 37 [2022-11-22 01:36:44,650 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 10 for LOIs [2022-11-22 01:36:44,652 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:37:03,149 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 423 DAG size of output: 417 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:37:14,898 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 426 DAG size of output: 425 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:37:21,623 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1128#(and (<= 1 |ULTIMATE.start_main_~var_93_arg_0~0#1|) (<= 0 |ULTIMATE.start_main_~var_25_arg_0~0#1|) (<= 33554432 |ULTIMATE.start_main_~msb_SORT_234~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_240~0#1| 1) 0) (<= (+ |ULTIMATE.start_main_~mask_SORT_238~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_240~0#1| 1)) (<= 1023 |ULTIMATE.start_main_~mask_SORT_202~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_244~0#1| 1)) (<= 0 |ULTIMATE.start_main_~var_21~0#1|) (<= 2097152 |ULTIMATE.start_main_~msb_SORT_226~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_216~0#1| 65536) (<= |ULTIMATE.start_main_~msb_SORT_212~0#1| 16384) (<= 2147483648 |ULTIMATE.start_main_~msb_SORT_156~0#1|) (<= |ULTIMATE.start_main_~#state_13~0#1.offset| 0) (<= 4096 |ULTIMATE.start_main_~msb_SORT_208~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_222~0#1| 1)) (<= 7 |ULTIMATE.start_main_~mask_SORT_19~0#1|) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~msb_SORT_214~0#1| 32768) (<= |ULTIMATE.start_main_~msb_SORT_191~0#1| 8) (<= |ULTIMATE.start_main_~msb_SORT_156~0#1| 2147483648) (<= 0 |ULTIMATE.start_main_~#state_249~0#1.offset|) (<= |ULTIMATE.start_main_~msb_SORT_226~0#1| 2097152) (<= |ULTIMATE.start_main_~mask_SORT_200~0#1| 511) (<= |ULTIMATE.start_main_~msb_SORT_197~0#1| 64) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_232~0#1| 1)) (<= (+ |ULTIMATE.start_main_~mask_SORT_242~0#1| 1) 0) (<= 256 |ULTIMATE.start_main_~msb_SORT_200~0#1|) (<= |ULTIMATE.start_main_~var_24~0#1| 1) (<= 0 |ULTIMATE.start_main_~var_22_arg_0~0#1|) (<= 0 |ULTIMATE.start_main_~#state_13~0#1.base|) (<= 0 |ULTIMATE.start_main_~var_50_arg_1~0#1|) (<= |ULTIMATE.start_main_~var_50_arg_1~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_242~0#1| 1)) (<= 0 |ULTIMATE.start_main_~var_508~0#1|) (<= |ULTIMATE.start_main_~var_513~0#1| 3) (<= 0 |ULTIMATE.start_main_~i~1#1|) (<= |ULTIMATE.start_main_~var_93_arg_0~0#1| 1) (<= 0 |ULTIMATE.start_main_~var_92~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_197~0#1| 127) (<= (+ |ULTIMATE.start_main_~mask_SORT_232~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~var_52_arg_0~0#1|) (<= |ULTIMATE.start_main_~var_83_arg_0~0#1| 1) (<= 0 |ULTIMATE.start_main_~var_51~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_19~0#1| 7) (<= 8192 |ULTIMATE.start_main_~msb_SORT_210~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_236~0#1| 1)) (<= |ULTIMATE.start_main_~var_21~0#1| 1) (<= 0 |ULTIMATE.start_main_~var_30~0#1|) (<= 1024 |ULTIMATE.start_main_~msb_SORT_204~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_234~0#1| 33554432) (<= |ULTIMATE.start_main_~var_25_arg_0~0#1| 1) (<= |ULTIMATE.start_main_~var_16_arg_0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#state_13~0#1.offset|) (<= |ULTIMATE.start_main_~msb_SORT_242~0#1| 536870912) (<= (+ |ULTIMATE.start_main_~mask_SORT_224~0#1| 1) 0) (<= 536870912 |ULTIMATE.start_main_~msb_SORT_242~0#1|) (<= 0 |ULTIMATE.start_main_~#state_249~0#1.base|) (<= |ULTIMATE.start_main_~mask_SORT_206~0#1| 4095) (<= |ULTIMATE.start_main_~var_531~0#1| 1) (<= |ULTIMATE.start_main_~mask_SORT_204~0#1| 2047) (<= 0 |ULTIMATE.start_main_~var_16_arg_0~0#1.offset|) (<= |ULTIMATE.start_main_~mask_SORT_193~0#1| 31) (<= |ULTIMATE.start_main_~var_51~0#1| 1) (<= (+ |ULTIMATE.start_main_~mask_SORT_236~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~var_17_arg_0~0#1.base|) (<= 4 |ULTIMATE.start_main_~msb_SORT_19~0#1|) (<= 1 |ULTIMATE.start_main_~var_77_arg_0~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_220~0#1| 1)) (<= |ULTIMATE.start_main_~mask_SORT_202~0#1| 1023) (<= 32768 |ULTIMATE.start_main_~msb_SORT_214~0#1|) (<= 16777216 |ULTIMATE.start_main_~msb_SORT_232~0#1|) (<= |ULTIMATE.start_main_~#state_249~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~msb_SORT_228~0#1| 4194304) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_224~0#1| 1)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= |ULTIMATE.start_main_~msb_SORT_193~0#1| 16) (<= 131072 |ULTIMATE.start_main_~msb_SORT_218~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_210~0#1| 8192) (<= |ULTIMATE.start_main_~msb_SORT_206~0#1| 2048) (<= |ULTIMATE.start_main_~var_60~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_156~0#1| 1)) (<= (+ |ULTIMATE.start_main_~mask_SORT_216~0#1| 1) 0) (<= 134217728 |ULTIMATE.start_main_~msb_SORT_238~0#1|) (<= |ULTIMATE.start_main_~var_89_arg_0~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_234~0#1| 1)) (<= |ULTIMATE.start_main_~var_508~0#1| 0) (<= 4194304 |ULTIMATE.start_main_~msb_SORT_228~0#1|) (<= 128 |ULTIMATE.start_main_~msb_SORT_3~0#1|) (<= 64 |ULTIMATE.start_main_~msb_SORT_197~0#1|) (<= 1 |ULTIMATE.start_main_~mask_SORT_1~0#1|) (<= |ULTIMATE.start_main_~var_92~0#1| 1) (<= 1 |ULTIMATE.start_main_~var_83_arg_0~0#1|) (<= |ULTIMATE.start_main_~var_37~0#1| 1) (<= |ULTIMATE.start_main_~var_80_arg_0~0#1| 1) (<= |ULTIMATE.start_main_~var_401~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_226~0#1| 1)) (<= |ULTIMATE.start_main_~msb_SORT_202~0#1| 512) (<= |ULTIMATE.start_main_~var_29~0#1| 4) (<= 1 |ULTIMATE.start_main_~state_61~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_11~0#1| 2) (<= 0 |ULTIMATE.start_main_~var_37~0#1|) (<= |ULTIMATE.start_main_~init_62_arg_1~0#1| 1) (<= 65535 |ULTIMATE.start_main_~mask_SORT_214~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_218~0#1| 1) 0) (<= |ULTIMATE.start_main_~mask_SORT_3~0#1| 255) (<= |ULTIMATE.start_main_~var_59~0#1| 1) (<= (+ |ULTIMATE.start_main_~mask_SORT_220~0#1| 1) 0) (<= |ULTIMATE.start_main_~state_61~0#1| 1) (<= 127 |ULTIMATE.start_main_~mask_SORT_197~0#1|) (<= 2 |ULTIMATE.start_main_~var_519~0#1|) (<= 0 |ULTIMATE.start_main_~var_24~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_228~0#1| 1) 0) (<= |ULTIMATE.start_main_~msb_SORT_232~0#1| 16777216) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_228~0#1| 1)) (<= 2048 |ULTIMATE.start_main_~msb_SORT_206~0#1|) (<= |ULTIMATE.start_main_~var_30_arg_1~0#1| 4) (<= 0 |ULTIMATE.start_main_~#state_15~0#1.offset|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 4 |ULTIMATE.start_main_~var_30_arg_1~0#1|) (<= 67108864 |ULTIMATE.start_main_~msb_SORT_236~0#1|) (<= 262144 |ULTIMATE.start_main_~msb_SORT_220~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_222~0#1| 1) 0) (<= |ULTIMATE.start_main_~msb_SORT_224~0#1| 1048576) (<= 0 |ULTIMATE.start_main_~var_57_arg_1~0#1|) (<= |ULTIMATE.start_main_~var_519~0#1| 2) (<= 511 |ULTIMATE.start_main_~mask_SORT_200~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_195~0#1| 63) (<= 2047 |ULTIMATE.start_main_~mask_SORT_204~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_3~0#1| 128) (<= 4 |ULTIMATE.start_main_~var_29~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_208~0#1| 8191) (<= |ULTIMATE.start_main_~var_17_arg_0~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~var_63_arg_2~0#1|) (<= |ULTIMATE.start_main_~var_38_arg_1~0#1| 1) (<= 1 |ULTIMATE.start_main_~var_63_arg_0~0#1|) (<= 0 |ULTIMATE.start_main_~var_60~0#1|) (<= 1 |ULTIMATE.start_main_~var_59~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (<= |ULTIMATE.start_main_~msb_SORT_204~0#1| 1024) (<= 32 |ULTIMATE.start_main_~msb_SORT_195~0#1|) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~var_80_arg_0~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_230~0#1| 1) 0) (<= 31 |ULTIMATE.start_main_~mask_SORT_193~0#1|) (<= 1 |ULTIMATE.start_main_~var_92_arg_0~0#1|) (<= 8 |ULTIMATE.start_main_~msb_SORT_191~0#1|) (<= |ULTIMATE.start_main_~var_30~0#1| 1) (<= |ULTIMATE.start_main_~var_49~0#1| 0) (<= 268435456 |ULTIMATE.start_main_~msb_SORT_240~0#1|) (<= 0 |ULTIMATE.start_main_~var_17_arg_0~0#1.offset|) (<= |ULTIMATE.start_main_~msb_SORT_222~0#1| 524288) (<= |ULTIMATE.start_main_~mask_SORT_210~0#1| 16383) (<= 4095 |ULTIMATE.start_main_~mask_SORT_206~0#1|) (<= 8388608 |ULTIMATE.start_main_~msb_SORT_230~0#1|) (<= 15 |ULTIMATE.start_main_~mask_SORT_191~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_200~0#1| 256) (<= |ULTIMATE.start_main_~var_63_arg_0~0#1| 1) (<= 2 |ULTIMATE.start_main_~msb_SORT_11~0#1|) (<= |ULTIMATE.start_main_~var_22_arg_0~0#1| 1) (<= 16384 |ULTIMATE.start_main_~msb_SORT_212~0#1|) (<= 16383 |ULTIMATE.start_main_~mask_SORT_210~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_230~0#1| 8388608) (<= |ULTIMATE.start_main_~msb_SORT_208~0#1| 4096) (<= 3 |ULTIMATE.start_main_~mask_SORT_11~0#1|) (<= 63 |ULTIMATE.start_main_~mask_SORT_195~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_191~0#1| 15) (<= |ULTIMATE.start_main_~#state_15~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~var_94_arg_0~0#1|) (<= 1 |ULTIMATE.start_main_~msb_SORT_1~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_226~0#1| 1) 0) (<= 1048576 |ULTIMATE.start_main_~msb_SORT_224~0#1|) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 255 |ULTIMATE.start_main_~mask_SORT_3~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_238~0#1| 1)) (<= (+ |ULTIMATE.start_main_~mask_SORT_156~0#1| 1) 0) (<= |ULTIMATE.start_main_~msb_SORT_240~0#1| 268435456) (<= |ULTIMATE.start_main_~mask_SORT_11~0#1| 3) (<= |ULTIMATE.start_main_~var_77_arg_0~0#1| 1) (<= |ULTIMATE.start_main_~var_57_arg_1~0#1| 1) (<= 0 |ULTIMATE.start_main_~var_49~0#1|) (<= 16 |ULTIMATE.start_main_~msb_SORT_193~0#1|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~var_63_arg_1~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_214~0#1| 65535) (<= 32767 |ULTIMATE.start_main_~mask_SORT_212~0#1|) (<= |ULTIMATE.start_main_~var_92_arg_0~0#1| 1) (<= |ULTIMATE.start_main_~msb_SORT_236~0#1| 67108864) (<= 1 |ULTIMATE.start_main_~init_62_arg_1~0#1|) (<= |ULTIMATE.start_main_~var_56~0#1| 1) (<= |ULTIMATE.start_main_~msb_SORT_1~0#1| 1) (<= |ULTIMATE.start_main_~var_52_arg_0~0#1| 1) (<= 512 |ULTIMATE.start_main_~msb_SORT_202~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_220~0#1| 262144) (<= 0 |ULTIMATE.start_main_~var_401~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_212~0#1| 32767) (<= 8191 |ULTIMATE.start_main_~mask_SORT_208~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_216~0#1| 1)) (<= 0 |ULTIMATE.start_main_~#state_15~0#1.base|) (<= |ULTIMATE.start_main_~msb_SORT_238~0#1| 134217728) (<= 1073741824 |ULTIMATE.start_main_~msb_SORT_244~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_218~0#1| 131072) (<= |ULTIMATE.start_main_~msb_SORT_19~0#1| 4) (<= 0 |#StackHeapBarrier|) (<= 524288 |ULTIMATE.start_main_~msb_SORT_222~0#1|) (<= |ULTIMATE.start_main_~var_94_arg_0~0#1| 1) (<= |ULTIMATE.start_main_~var_63_arg_1~0#1| 0) (<= 0 |ULTIMATE.start_main_~var_38_arg_1~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_244~0#1| 1) 0) (<= 1 |ULTIMATE.start_main_~var_70_arg_0~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_218~0#1| 1)) (<= 3 |ULTIMATE.start_main_~var_513~0#1|) (<= 1 |ULTIMATE.start_main_~var_531~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_1~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_230~0#1| 1)) (<= 65536 |ULTIMATE.start_main_~msb_SORT_216~0#1|) (<= 0 |ULTIMATE.start_main_~var_56~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_234~0#1| 1) 0) (<= |ULTIMATE.start_main_~msb_SORT_195~0#1| 32) (<= |ULTIMATE.start_main_~msb_SORT_244~0#1| 1073741824) (<= 0 |ULTIMATE.start_main_~var_16_arg_0~0#1.base|) (<= |ULTIMATE.start_main_~var_70_arg_0~0#1| 1) (<= |ULTIMATE.start_main_~var_63_arg_2~0#1| 1) (<= 1 |ULTIMATE.start_main_~var_89_arg_0~0#1|))' at error location [2022-11-22 01:37:21,623 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:37:21,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:37:21,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 8 [2022-11-22 01:37:21,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378246656] [2022-11-22 01:37:21,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:37:21,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:37:21,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:21,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:37:21,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2022-11-22 01:37:21,627 INFO L87 Difference]: Start difference. First operand 39 states and 61 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-22 01:37:22,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:22,961 INFO L93 Difference]: Finished difference Result 78 states and 124 transitions. [2022-11-22 01:37:22,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:37:22,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 30 [2022-11-22 01:37:22,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:22,962 INFO L225 Difference]: With dead ends: 78 [2022-11-22 01:37:22,963 INFO L226 Difference]: Without dead ends: 42 [2022-11-22 01:37:22,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 37.0s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2022-11-22 01:37:22,964 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:22,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 01:37:22,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-22 01:37:22,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-22 01:37:22,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 states have internal predecessors, (54), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-22 01:37:22,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 64 transitions. [2022-11-22 01:37:22,972 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 64 transitions. Word has length 30 [2022-11-22 01:37:22,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:22,972 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 64 transitions. [2022-11-22 01:37:22,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-22 01:37:22,973 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 64 transitions. [2022-11-22 01:37:22,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-22 01:37:22,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:22,974 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2022-11-22 01:37:22,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:37:23,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:23,179 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:23,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:23,180 INFO L85 PathProgramCache]: Analyzing trace with hash 388566495, now seen corresponding path program 2 times [2022-11-22 01:37:23,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:23,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290206476] [2022-11-22 01:37:23,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:23,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:23,788 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-22 01:37:23,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:23,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290206476] [2022-11-22 01:37:23,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290206476] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:23,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757811227] [2022-11-22 01:37:23,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:37:23,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:23,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:23,792 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:37:23,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:37:25,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-22 01:37:25,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:37:25,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-22 01:37:25,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:37:25,940 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-22 01:37:25,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:37:25,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757811227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:37:25,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:37:25,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-22 01:37:25,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783072510] [2022-11-22 01:37:25,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:25,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:37:25,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:25,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:37:25,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:37:25,944 INFO L87 Difference]: Start difference. First operand 42 states and 64 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-22 01:37:28,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:28,137 INFO L93 Difference]: Finished difference Result 83 states and 130 transitions. [2022-11-22 01:37:28,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:37:28,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2022-11-22 01:37:28,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:28,140 INFO L225 Difference]: With dead ends: 83 [2022-11-22 01:37:28,140 INFO L226 Difference]: Without dead ends: 81 [2022-11-22 01:37:28,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:37:28,141 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 152 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:28,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 71 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-22 01:37:28,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-22 01:37:28,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 54. [2022-11-22 01:37:28,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:37:28,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 81 transitions. [2022-11-22 01:37:28,160 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 81 transitions. Word has length 33 [2022-11-22 01:37:28,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:28,161 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 81 transitions. [2022-11-22 01:37:28,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-22 01:37:28,162 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 81 transitions. [2022-11-22 01:37:28,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-22 01:37:28,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:28,164 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:28,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:37:28,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:28,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:28,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:28,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1441109787, now seen corresponding path program 1 times [2022-11-22 01:37:28,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:28,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486645913] [2022-11-22 01:37:28,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:28,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-22 01:37:29,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:29,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486645913] [2022-11-22 01:37:29,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486645913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:29,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966435397] [2022-11-22 01:37:29,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:29,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:29,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:29,871 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:37:29,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:37:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:31,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 2722 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 01:37:31,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:37:31,042 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-22 01:37:31,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:37:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-22 01:37:31,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966435397] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:31,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:37:31,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-11-22 01:37:31,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657756416] [2022-11-22 01:37:31,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:31,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:37:31,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:31,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:37:31,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:37:31,120 INFO L87 Difference]: Start difference. First operand 54 states and 81 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:37:32,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:32,127 INFO L93 Difference]: Finished difference Result 87 states and 134 transitions. [2022-11-22 01:37:32,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:37:32,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2022-11-22 01:37:32,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:32,129 INFO L225 Difference]: With dead ends: 87 [2022-11-22 01:37:32,129 INFO L226 Difference]: Without dead ends: 55 [2022-11-22 01:37:32,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:37:32,131 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:32,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 01:37:32,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-22 01:37:32,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-22 01:37:32,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:37:32,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 82 transitions. [2022-11-22 01:37:32,151 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 82 transitions. Word has length 71 [2022-11-22 01:37:32,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:32,151 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 82 transitions. [2022-11-22 01:37:32,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:37:32,152 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 82 transitions. [2022-11-22 01:37:32,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-22 01:37:32,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:32,153 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:32,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 01:37:32,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-22 01:37:32,354 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:32,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:32,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1283929529, now seen corresponding path program 1 times [2022-11-22 01:37:32,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:32,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247602318] [2022-11-22 01:37:32,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:32,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:33,659 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-22 01:37:33,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:33,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247602318] [2022-11-22 01:37:33,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247602318] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:33,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125952344] [2022-11-22 01:37:33,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:33,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:33,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:33,663 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:37:33,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 01:37:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:34,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 01:37:34,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:37:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-22 01:37:34,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:37:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-22 01:37:34,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125952344] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:34,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:37:34,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-11-22 01:37:34,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078042357] [2022-11-22 01:37:34,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:34,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:37:34,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:34,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:37:34,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:37:34,915 INFO L87 Difference]: Start difference. First operand 55 states and 82 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:37:35,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:35,598 INFO L93 Difference]: Finished difference Result 89 states and 136 transitions. [2022-11-22 01:37:35,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:37:35,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2022-11-22 01:37:35,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:35,600 INFO L225 Difference]: With dead ends: 89 [2022-11-22 01:37:35,600 INFO L226 Difference]: Without dead ends: 56 [2022-11-22 01:37:35,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:37:35,601 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:35,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 01:37:35,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-22 01:37:35,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-22 01:37:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 44 states have internal predecessors, (63), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:37:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 83 transitions. [2022-11-22 01:37:35,616 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 83 transitions. Word has length 72 [2022-11-22 01:37:35,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:35,617 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 83 transitions. [2022-11-22 01:37:35,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:37:35,618 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 83 transitions. [2022-11-22 01:37:35,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-22 01:37:35,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:35,619 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:35,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-22 01:37:35,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:35,836 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:35,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:35,836 INFO L85 PathProgramCache]: Analyzing trace with hash -531948443, now seen corresponding path program 1 times [2022-11-22 01:37:35,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:35,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349516156] [2022-11-22 01:37:35,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:35,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-22 01:37:37,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:37,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349516156] [2022-11-22 01:37:37,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349516156] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:37,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734071949] [2022-11-22 01:37:37,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:37,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:37,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:37,167 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:37:37,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 01:37:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:38,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 2736 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 01:37:38,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:37:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-22 01:37:38,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:37:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-11-22 01:37:38,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734071949] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:38,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:37:38,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-11-22 01:37:38,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811992648] [2022-11-22 01:37:38,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:38,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:37:38,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:38,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:37:38,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:37:38,634 INFO L87 Difference]: Start difference. First operand 56 states and 83 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:37:39,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:39,505 INFO L93 Difference]: Finished difference Result 91 states and 138 transitions. [2022-11-22 01:37:39,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:37:39,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 73 [2022-11-22 01:37:39,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:39,507 INFO L225 Difference]: With dead ends: 91 [2022-11-22 01:37:39,507 INFO L226 Difference]: Without dead ends: 57 [2022-11-22 01:37:39,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:37:39,508 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:39,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 01:37:39,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-22 01:37:39,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-22 01:37:39,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:37:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2022-11-22 01:37:39,520 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 73 [2022-11-22 01:37:39,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:39,521 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2022-11-22 01:37:39,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:37:39,521 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2022-11-22 01:37:39,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-22 01:37:39,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:39,523 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:39,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 01:37:39,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:39,731 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:39,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:39,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1548574988, now seen corresponding path program 1 times [2022-11-22 01:37:39,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:39,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990734363] [2022-11-22 01:37:39,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:39,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:40,921 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-22 01:37:40,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:40,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990734363] [2022-11-22 01:37:40,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990734363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:40,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174950963] [2022-11-22 01:37:40,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:40,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:40,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:40,926 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:37:40,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 01:37:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:42,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 01:37:42,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:37:42,258 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-22 01:37:42,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:37:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-22 01:37:42,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174950963] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:42,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:37:42,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-11-22 01:37:42,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088920536] [2022-11-22 01:37:42,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:42,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:37:42,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:42,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:37:42,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:37:42,304 INFO L87 Difference]: Start difference. First operand 57 states and 84 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:37:43,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:43,446 INFO L93 Difference]: Finished difference Result 93 states and 140 transitions. [2022-11-22 01:37:43,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:37:43,447 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), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 74 [2022-11-22 01:37:43,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:43,448 INFO L225 Difference]: With dead ends: 93 [2022-11-22 01:37:43,448 INFO L226 Difference]: Without dead ends: 58 [2022-11-22 01:37:43,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:37:43,449 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:43,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-22 01:37:43,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-22 01:37:43,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-22 01:37:43,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 46 states have internal predecessors, (65), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:37:43,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 85 transitions. [2022-11-22 01:37:43,469 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 85 transitions. Word has length 74 [2022-11-22 01:37:43,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:43,469 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 85 transitions. [2022-11-22 01:37:43,469 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), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:37:43,469 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 85 transitions. [2022-11-22 01:37:43,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-22 01:37:43,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:43,470 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:43,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 01:37:43,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:43,687 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:43,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:43,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1359662176, now seen corresponding path program 1 times [2022-11-22 01:37:43,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:43,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805180996] [2022-11-22 01:37:43,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:43,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:44,899 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-22 01:37:44,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:44,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805180996] [2022-11-22 01:37:44,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805180996] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:44,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351596998] [2022-11-22 01:37:44,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:44,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:44,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:44,903 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:37:44,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 01:37:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:46,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 01:37:46,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:37:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-22 01:37:46,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:37:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-22 01:37:46,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351596998] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:46,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:37:46,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-11-22 01:37:46,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547899301] [2022-11-22 01:37:46,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:46,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:37:46,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:46,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:37:46,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:37:46,350 INFO L87 Difference]: Start difference. First operand 58 states and 85 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:37:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:46,905 INFO L93 Difference]: Finished difference Result 95 states and 142 transitions. [2022-11-22 01:37:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:37:46,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 75 [2022-11-22 01:37:46,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:46,907 INFO L225 Difference]: With dead ends: 95 [2022-11-22 01:37:46,907 INFO L226 Difference]: Without dead ends: 59 [2022-11-22 01:37:46,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:37:46,908 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:46,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:37:46,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-22 01:37:46,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-22 01:37:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 47 states have internal predecessors, (66), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:37:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2022-11-22 01:37:46,923 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 75 [2022-11-22 01:37:46,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:46,924 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2022-11-22 01:37:46,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:37:46,925 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2022-11-22 01:37:46,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-22 01:37:46,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:46,931 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:46,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 01:37:47,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 01:37:47,135 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:47,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:47,135 INFO L85 PathProgramCache]: Analyzing trace with hash -990761753, now seen corresponding path program 1 times [2022-11-22 01:37:47,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:47,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452995812] [2022-11-22 01:37:47,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:47,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:48,190 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-22 01:37:48,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:48,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452995812] [2022-11-22 01:37:48,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452995812] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:48,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446314575] [2022-11-22 01:37:48,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:48,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:48,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:48,193 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:37:48,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 01:37:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:49,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 2757 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:37:49,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:37:49,575 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-22 01:37:49,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:37:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-22 01:37:49,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446314575] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:49,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:37:49,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-22 01:37:49,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530768108] [2022-11-22 01:37:49,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:49,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:37:49,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:49,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:37:49,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:37:49,619 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:37:51,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:51,206 INFO L93 Difference]: Finished difference Result 97 states and 144 transitions. [2022-11-22 01:37:51,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:37:51,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 76 [2022-11-22 01:37:51,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:51,208 INFO L225 Difference]: With dead ends: 97 [2022-11-22 01:37:51,208 INFO L226 Difference]: Without dead ends: 60 [2022-11-22 01:37:51,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:37:51,210 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:51,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 01:37:51,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-22 01:37:51,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-22 01:37:51,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 48 states have internal predecessors, (67), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:37:51,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 87 transitions. [2022-11-22 01:37:51,223 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 87 transitions. Word has length 76 [2022-11-22 01:37:51,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:51,223 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 87 transitions. [2022-11-22 01:37:51,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:37:51,224 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 87 transitions. [2022-11-22 01:37:51,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-22 01:37:51,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:51,225 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:51,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 01:37:51,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:51,439 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:51,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:51,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1356481381, now seen corresponding path program 1 times [2022-11-22 01:37:51,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:51,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42919070] [2022-11-22 01:37:51,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:51,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:52,358 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-22 01:37:52,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:52,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42919070] [2022-11-22 01:37:52,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42919070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:52,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112660336] [2022-11-22 01:37:52,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:52,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:52,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:52,361 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:37:52,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 01:37:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:53,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:37:53,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:37:53,722 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-22 01:37:53,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:37:53,778 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-22 01:37:53,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112660336] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:53,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:37:53,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-22 01:37:53,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874451624] [2022-11-22 01:37:53,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:53,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:37:53,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:53,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:37:53,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:37:53,781 INFO L87 Difference]: Start difference. First operand 60 states and 87 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:37:54,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:54,804 INFO L93 Difference]: Finished difference Result 99 states and 146 transitions. [2022-11-22 01:37:54,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:37:54,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 77 [2022-11-22 01:37:54,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:54,805 INFO L225 Difference]: With dead ends: 99 [2022-11-22 01:37:54,805 INFO L226 Difference]: Without dead ends: 61 [2022-11-22 01:37:54,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:37:54,806 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:54,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 01:37:54,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-22 01:37:54,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-22 01:37:54,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 49 states have internal predecessors, (68), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:37:54,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2022-11-22 01:37:54,816 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 77 [2022-11-22 01:37:54,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:54,817 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2022-11-22 01:37:54,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:37:54,817 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2022-11-22 01:37:54,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-22 01:37:54,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:54,819 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:54,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-22 01:37:55,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:55,019 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:55,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:55,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1171963248, now seen corresponding path program 1 times [2022-11-22 01:37:55,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:55,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771710445] [2022-11-22 01:37:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:55,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-22 01:37:56,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:37:56,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771710445] [2022-11-22 01:37:56,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771710445] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:56,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345214001] [2022-11-22 01:37:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:56,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:56,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:37:56,156 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:37:56,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-22 01:37:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:37:57,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 2771 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:37:57,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:37:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-22 01:37:57,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:37:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-22 01:37:57,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345214001] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:37:57,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:37:57,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-22 01:37:57,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001302217] [2022-11-22 01:37:57,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:37:57,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:37:57,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:37:57,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:37:57,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:37:57,659 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:37:58,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:37:58,757 INFO L93 Difference]: Finished difference Result 101 states and 148 transitions. [2022-11-22 01:37:58,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:37:58,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 78 [2022-11-22 01:37:58,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:37:58,759 INFO L225 Difference]: With dead ends: 101 [2022-11-22 01:37:58,760 INFO L226 Difference]: Without dead ends: 62 [2022-11-22 01:37:58,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:37:58,761 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:37:58,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-22 01:37:58,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-22 01:37:58,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-22 01:37:58,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 50 states have (on average 1.38) internal successors, (69), 50 states have internal predecessors, (69), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:37:58,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 89 transitions. [2022-11-22 01:37:58,772 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 89 transitions. Word has length 78 [2022-11-22 01:37:58,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:37:58,773 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 89 transitions. [2022-11-22 01:37:58,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:37:58,773 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 89 transitions. [2022-11-22 01:37:58,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-22 01:37:58,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:37:58,775 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:37:58,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-22 01:37:58,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:37:58,993 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:37:58,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:37:58,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1295399476, now seen corresponding path program 1 times [2022-11-22 01:37:58,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:37:58,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155211017] [2022-11-22 01:37:58,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:37:58,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:37:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:00,107 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-22 01:38:00,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:00,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155211017] [2022-11-22 01:38:00,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155211017] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:38:00,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241776816] [2022-11-22 01:38:00,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:00,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:00,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:38:00,111 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:38:00,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-22 01:38:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:01,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 2778 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:38:01,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:38:01,600 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-22 01:38:01,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:38:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-22 01:38:01,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241776816] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:38:01,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:38:01,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-22 01:38:01,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575182067] [2022-11-22 01:38:01,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:01,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:38:01,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:01,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:38:01,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:38:01,641 INFO L87 Difference]: Start difference. First operand 62 states and 89 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:38:02,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:02,109 INFO L93 Difference]: Finished difference Result 103 states and 150 transitions. [2022-11-22 01:38:02,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:38:02,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 79 [2022-11-22 01:38:02,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:02,111 INFO L225 Difference]: With dead ends: 103 [2022-11-22 01:38:02,111 INFO L226 Difference]: Without dead ends: 63 [2022-11-22 01:38:02,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:38:02,112 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:02,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:38:02,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-22 01:38:02,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-22 01:38:02,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 51 states have internal predecessors, (70), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:38:02,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 90 transitions. [2022-11-22 01:38:02,121 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 90 transitions. Word has length 79 [2022-11-22 01:38:02,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:02,121 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 90 transitions. [2022-11-22 01:38:02,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:38:02,121 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 90 transitions. [2022-11-22 01:38:02,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-22 01:38:02,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:02,126 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:02,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-22 01:38:02,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:02,327 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:02,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:02,327 INFO L85 PathProgramCache]: Analyzing trace with hash -514884718, now seen corresponding path program 1 times [2022-11-22 01:38:02,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:02,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779679347] [2022-11-22 01:38:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:02,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-22 01:38:03,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:03,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779679347] [2022-11-22 01:38:03,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779679347] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:38:03,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695311051] [2022-11-22 01:38:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:03,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:03,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:38:03,379 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:38:03,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-22 01:38:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:04,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 2785 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:38:04,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:38:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-22 01:38:04,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:38:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-11-22 01:38:04,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695311051] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:38:04,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:38:04,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-22 01:38:04,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542365059] [2022-11-22 01:38:04,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:04,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:38:04,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:04,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:38:04,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:38:04,928 INFO L87 Difference]: Start difference. First operand 63 states and 90 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:38:05,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:05,539 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2022-11-22 01:38:05,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:38:05,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 80 [2022-11-22 01:38:05,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:05,541 INFO L225 Difference]: With dead ends: 105 [2022-11-22 01:38:05,541 INFO L226 Difference]: Without dead ends: 64 [2022-11-22 01:38:05,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:38:05,542 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:05,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 01:38:05,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-22 01:38:05,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-22 01:38:05,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 52 states have internal predecessors, (71), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:38:05,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 91 transitions. [2022-11-22 01:38:05,553 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 91 transitions. Word has length 80 [2022-11-22 01:38:05,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:05,553 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 91 transitions. [2022-11-22 01:38:05,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:38:05,554 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 91 transitions. [2022-11-22 01:38:05,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 01:38:05,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:05,555 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:05,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-22 01:38:05,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-22 01:38:05,763 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:05,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:05,763 INFO L85 PathProgramCache]: Analyzing trace with hash -2067092941, now seen corresponding path program 1 times [2022-11-22 01:38:05,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:05,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350140907] [2022-11-22 01:38:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:05,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:06,740 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-22 01:38:06,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:06,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350140907] [2022-11-22 01:38:06,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350140907] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:38:06,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409402640] [2022-11-22 01:38:06,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:06,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:06,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:38:06,750 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:38:06,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-22 01:38:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:08,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 2792 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:38:08,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:38:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-22 01:38:08,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:38:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-22 01:38:08,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409402640] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:38:08,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:38:08,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-22 01:38:08,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517186266] [2022-11-22 01:38:08,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:08,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:38:08,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:08,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:38:08,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:38:08,258 INFO L87 Difference]: Start difference. First operand 64 states and 91 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:38:09,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:38:09,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:09,959 INFO L93 Difference]: Finished difference Result 107 states and 154 transitions. [2022-11-22 01:38:09,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:38:09,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 81 [2022-11-22 01:38:09,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:09,961 INFO L225 Difference]: With dead ends: 107 [2022-11-22 01:38:09,961 INFO L226 Difference]: Without dead ends: 65 [2022-11-22 01:38:09,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:38:09,963 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:09,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-22 01:38:09,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-22 01:38:09,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-11-22 01:38:09,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 53 states have internal predecessors, (72), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:38:09,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 92 transitions. [2022-11-22 01:38:09,975 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 92 transitions. Word has length 81 [2022-11-22 01:38:09,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:09,976 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 92 transitions. [2022-11-22 01:38:09,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:38:09,976 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 92 transitions. [2022-11-22 01:38:09,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-22 01:38:09,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:09,978 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:09,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-11-22 01:38:10,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-22 01:38:10,187 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:10,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:10,187 INFO L85 PathProgramCache]: Analyzing trace with hash 897469488, now seen corresponding path program 1 times [2022-11-22 01:38:10,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:10,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359211759] [2022-11-22 01:38:10,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:10,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-22 01:38:11,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:11,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359211759] [2022-11-22 01:38:11,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359211759] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:38:11,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592015034] [2022-11-22 01:38:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:11,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:11,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:38:11,213 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:38:11,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-22 01:38:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:12,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 2799 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:38:12,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:38:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-22 01:38:12,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:38:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-22 01:38:12,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592015034] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:38:12,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:38:12,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-22 01:38:12,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386411410] [2022-11-22 01:38:12,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:12,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:38:12,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:12,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:38:12,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:38:12,925 INFO L87 Difference]: Start difference. First operand 65 states and 92 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:38:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:13,589 INFO L93 Difference]: Finished difference Result 109 states and 156 transitions. [2022-11-22 01:38:13,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:38:13,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 82 [2022-11-22 01:38:13,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:13,591 INFO L225 Difference]: With dead ends: 109 [2022-11-22 01:38:13,591 INFO L226 Difference]: Without dead ends: 66 [2022-11-22 01:38:13,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:38:13,592 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:13,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 01:38:13,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-22 01:38:13,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-11-22 01:38:13,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 54 states have (on average 1.3518518518518519) internal successors, (73), 54 states have internal predecessors, (73), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:38:13,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2022-11-22 01:38:13,601 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 82 [2022-11-22 01:38:13,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:13,601 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2022-11-22 01:38:13,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:38:13,602 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2022-11-22 01:38:13,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-22 01:38:13,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:13,603 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:13,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-22 01:38:13,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:13,804 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:13,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:13,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1477854705, now seen corresponding path program 1 times [2022-11-22 01:38:13,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:13,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084274559] [2022-11-22 01:38:13,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:13,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:14,577 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-11-22 01:38:14,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:14,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084274559] [2022-11-22 01:38:14,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084274559] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:38:14,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371697895] [2022-11-22 01:38:14,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:14,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:14,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:38:14,579 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:38:14,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-22 01:38:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:16,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 2806 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 01:38:16,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:38:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-22 01:38:16,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:38:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-22 01:38:16,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371697895] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:38:16,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:38:16,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-11-22 01:38:16,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413131846] [2022-11-22 01:38:16,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:16,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:38:16,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:16,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:38:16,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:38:16,215 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:38:16,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:16,995 INFO L93 Difference]: Finished difference Result 111 states and 158 transitions. [2022-11-22 01:38:16,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:38:16,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2022-11-22 01:38:16,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:16,997 INFO L225 Difference]: With dead ends: 111 [2022-11-22 01:38:16,997 INFO L226 Difference]: Without dead ends: 67 [2022-11-22 01:38:16,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:38:16,998 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:16,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 01:38:16,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-22 01:38:17,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-22 01:38:17,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 55 states have internal predecessors, (74), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:38:17,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 94 transitions. [2022-11-22 01:38:17,009 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 94 transitions. Word has length 83 [2022-11-22 01:38:17,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:17,010 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 94 transitions. [2022-11-22 01:38:17,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:38:17,010 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 94 transitions. [2022-11-22 01:38:17,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-22 01:38:17,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:17,011 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:17,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-22 01:38:17,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-22 01:38:17,223 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:17,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:17,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1023712466, now seen corresponding path program 1 times [2022-11-22 01:38:17,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:17,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789710481] [2022-11-22 01:38:17,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:17,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-22 01:38:18,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:18,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789710481] [2022-11-22 01:38:18,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789710481] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:38:18,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150141600] [2022-11-22 01:38:18,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:18,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:18,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:38:18,051 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:38:18,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-22 01:38:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:19,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 2813 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:38:19,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:38:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-22 01:38:19,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:38:19,649 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-22 01:38:19,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150141600] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:38:19,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:38:19,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-22 01:38:19,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737986273] [2022-11-22 01:38:19,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:19,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:38:19,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:19,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:38:19,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:38:19,652 INFO L87 Difference]: Start difference. First operand 67 states and 94 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:38:20,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:20,244 INFO L93 Difference]: Finished difference Result 113 states and 160 transitions. [2022-11-22 01:38:20,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:38:20,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2022-11-22 01:38:20,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:20,246 INFO L225 Difference]: With dead ends: 113 [2022-11-22 01:38:20,246 INFO L226 Difference]: Without dead ends: 68 [2022-11-22 01:38:20,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:38:20,247 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:20,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 01:38:20,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-22 01:38:20,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-11-22 01:38:20,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 56 states have internal predecessors, (75), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:38:20,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 95 transitions. [2022-11-22 01:38:20,258 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 95 transitions. Word has length 84 [2022-11-22 01:38:20,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:20,258 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 95 transitions. [2022-11-22 01:38:20,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:38:20,259 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 95 transitions. [2022-11-22 01:38:20,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-22 01:38:20,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:20,260 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:20,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-22 01:38:20,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:20,473 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:20,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:20,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2005884612, now seen corresponding path program 1 times [2022-11-22 01:38:20,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:20,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207498775] [2022-11-22 01:38:20,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:20,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:21,203 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-22 01:38:21,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:21,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207498775] [2022-11-22 01:38:21,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207498775] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:38:21,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065566921] [2022-11-22 01:38:21,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:21,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:21,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:38:21,205 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:38:21,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-22 01:38:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:22,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:38:22,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:38:22,960 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-22 01:38:22,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:38:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-22 01:38:23,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065566921] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:38:23,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:38:23,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-11-22 01:38:23,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141542686] [2022-11-22 01:38:23,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:38:23,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:38:23,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:38:23,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:38:23,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:38:23,017 INFO L87 Difference]: Start difference. First operand 68 states and 95 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:38:23,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:38:23,551 INFO L93 Difference]: Finished difference Result 115 states and 162 transitions. [2022-11-22 01:38:23,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:38:23,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2022-11-22 01:38:23,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:38:23,553 INFO L225 Difference]: With dead ends: 115 [2022-11-22 01:38:23,553 INFO L226 Difference]: Without dead ends: 69 [2022-11-22 01:38:23,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:38:23,554 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:38:23,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:38:23,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-22 01:38:23,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-22 01:38:23,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 57 states have internal predecessors, (76), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:38:23,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2022-11-22 01:38:23,565 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 85 [2022-11-22 01:38:23,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:38:23,566 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2022-11-22 01:38:23,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-22 01:38:23,567 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2022-11-22 01:38:23,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-22 01:38:23,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:38:23,568 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:38:23,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-22 01:38:23,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:23,784 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:38:23,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:38:23,784 INFO L85 PathProgramCache]: Analyzing trace with hash -174363678, now seen corresponding path program 1 times [2022-11-22 01:38:23,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:38:23,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602315339] [2022-11-22 01:38:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:23,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:38:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-11-22 01:38:24,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:38:24,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602315339] [2022-11-22 01:38:24,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602315339] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:38:24,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621360759] [2022-11-22 01:38:24,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:38:24,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:38:24,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:38:24,820 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:38:24,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3126bd7a-4aea-4b06-b64d-6ccc595c7d7f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-22 01:38:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:38:26,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2827 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:38:26,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:38:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-22 01:38:26,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:38:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-11-22 01:38:26,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621360759] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:38:26,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1068338409] [2022-11-22 01:38:26,764 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2022-11-22 01:38:26,765 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:38:26,765 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:38:26,766 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:38:26,766 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:38:26,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:38:26,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-22 01:38:27,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-11-22 01:38:27,691 INFO L321 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2022-11-22 01:38:27,697 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 652 treesize of output 659 [2022-11-22 01:38:28,740 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 41 treesize of output 37 [2022-11-22 01:38:28,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:38:28,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:38:28,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-11-22 01:38:29,364 INFO L321 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2022-11-22 01:38:29,365 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 492 treesize of output 499 [2022-11-22 01:38:30,233 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 41 treesize of output 37 [2022-11-22 01:38:30,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:38:30,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:38:30,806 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 41 treesize of output 37 [2022-11-22 01:38:31,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:31,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 96 [2022-11-22 01:38:31,752 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 41 treesize of output 37 [2022-11-22 01:38:39,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:38:39,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:38:40,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:38:40,382 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:38:40,383 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 27 treesize of output 27 [2022-11-22 01:38:41,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:41,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:41,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:41,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:38:41,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:38:42,017 INFO L321 Elim1Store]: treesize reduction 31, result has 29.5 percent of original size [2022-11-22 01:38:42,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 74 [2022-11-22 01:38:42,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:38:42,967 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:38:42,967 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 27 treesize of output 27 [2022-11-22 01:38:43,579 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 15 treesize of output 11 [2022-11-22 01:38:43,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:38:43,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:38:44,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:44,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:38:44,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:38:44,440 INFO L321 Elim1Store]: treesize reduction 38, result has 49.3 percent of original size [2022-11-22 01:38:44,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 67 [2022-11-22 01:38:46,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:38:46,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:47,030 INFO L321 Elim1Store]: treesize reduction 82, result has 58.6 percent of original size [2022-11-22 01:38:47,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 334 [2022-11-22 01:38:50,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:38:50,495 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:38:50,495 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 27 treesize of output 27 [2022-11-22 01:38:51,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:38:51,358 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 15 treesize of output 11 [2022-11-22 01:38:51,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:38:52,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:52,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:38:52,284 INFO L321 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-11-22 01:38:52,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 43 [2022-11-22 01:38:54,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:38:54,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:54,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:38:54,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:38:54,935 INFO L321 Elim1Store]: treesize reduction 256, result has 29.3 percent of original size [2022-11-22 01:38:54,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 466 treesize of output 517 [2022-11-22 01:38:58,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:38:58,560 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:38:58,561 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 27 treesize of output 27 [2022-11-22 01:38:59,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:38:59,472 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 15 treesize of output 11 [2022-11-22 01:38:59,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:39:00,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:39:00,759 INFO L321 Elim1Store]: treesize reduction 152, result has 43.5 percent of original size [2022-11-22 01:39:00,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 133 [2022-11-22 01:39:04,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:39:04,662 INFO L321 Elim1Store]: treesize reduction 112, result has 67.0 percent of original size [2022-11-22 01:39:04,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 272 treesize of output 460 [2022-11-22 01:39:50,925 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 7492 conjuctions. This might take some time... [2022-11-22 01:43:47,704 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 7492 conjuctions. [2022-11-22 01:43:54,213 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 7492 conjuctions. This might take some time... [2022-11-22 01:47:27,638 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 7492 conjuctions. [2022-11-22 01:47:40,361 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:47:40,396 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:47:40,396 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 27 treesize of output 27 [2022-11-22 01:47:41,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:47:41,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:47:41,707 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 15 treesize of output 11 [2022-11-22 01:47:42,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:47:42,915 INFO L321 Elim1Store]: treesize reduction 108, result has 34.9 percent of original size [2022-11-22 01:47:42,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 71 [2022-11-22 01:47:46,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:47:46,288 INFO L321 Elim1Store]: treesize reduction 82, result has 62.4 percent of original size [2022-11-22 01:47:46,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 354 [2022-11-22 01:47:52,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:47:52,637 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:47:52,638 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 27 treesize of output 27 [2022-11-22 01:47:53,642 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 15 treesize of output 11 [2022-11-22 01:47:53,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:47:53,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:47:55,095 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:47:55,131 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:47:55,131 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 27 treesize of output 27 [2022-11-22 01:47:58,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:47:58,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:47:58,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:47:58,979 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:47:59,018 INFO L321 Elim1Store]: treesize reduction 31, result has 29.5 percent of original size [2022-11-22 01:47:59,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 74 [2022-11-22 01:48:00,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:48:00,789 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:48:00,789 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 27 treesize of output 27 [2022-11-22 01:48:03,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:48:03,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:48:03,844 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 15 treesize of output 11 [2022-11-22 01:48:05,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:48:05,747 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:48:05,748 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 27 treesize of output 27 [2022-11-22 01:48:10,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:10,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:10,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:10,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:48:10,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:48:10,390 INFO L321 Elim1Store]: treesize reduction 31, result has 29.5 percent of original size [2022-11-22 01:48:10,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 74 [2022-11-22 01:48:13,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:48:13,153 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:48:13,153 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 27 treesize of output 27 [2022-11-22 01:48:14,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:48:14,693 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 15 treesize of output 11 [2022-11-22 01:48:14,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:48:16,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:16,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:16,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:48:16,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:48:16,545 INFO L321 Elim1Store]: treesize reduction 38, result has 49.3 percent of original size [2022-11-22 01:48:16,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 67 [2022-11-22 01:48:22,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:48:22,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:22,887 INFO L321 Elim1Store]: treesize reduction 82, result has 58.6 percent of original size [2022-11-22 01:48:22,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 334 [2022-11-22 01:48:28,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:48:28,092 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:48:28,092 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 27 treesize of output 27 [2022-11-22 01:48:29,758 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 15 treesize of output 11 [2022-11-22 01:48:29,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:48:30,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:48:32,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:32,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:32,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:32,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:48:32,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:32,100 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:48:32,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 55 [2022-11-22 01:48:38,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:38,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:38,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:38,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:48:38,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:38,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:48:38,511 INFO L321 Elim1Store]: treesize reduction 218, result has 25.9 percent of original size [2022-11-22 01:48:38,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 485 treesize of output 520 [2022-11-22 01:48:42,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:48:42,122 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:48:42,122 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 27 treesize of output 27 [2022-11-22 01:48:43,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:48:44,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:48:44,416 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 15 treesize of output 11 [2022-11-22 01:48:45,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:45,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:45,986 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:48:45,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:46,041 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:48:46,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 55 [2022-11-22 01:48:53,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:53,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:53,321 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:48:53,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:53,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:53,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:53,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:48:53,564 INFO L321 Elim1Store]: treesize reduction 214, result has 14.4 percent of original size [2022-11-22 01:48:53,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 491 treesize of output 486 [2022-11-22 01:48:56,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:48:56,828 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:48:56,828 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 27 treesize of output 27 [2022-11-22 01:48:58,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:48:59,400 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 15 treesize of output 11 [2022-11-22 01:48:59,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:49:06,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:49:06,280 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:49:06,281 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 27 treesize of output 27 [2022-11-22 01:49:12,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:49:12,528 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:49:12,529 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 27 treesize of output 27 [2022-11-22 01:49:15,095 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 15 treesize of output 11 [2022-11-22 01:49:15,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 01:49:15,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:49:18,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:49:18,371 INFO L321 Elim1Store]: treesize reduction 138, result has 35.5 percent of original size [2022-11-22 01:49:18,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 95 [2022-11-22 01:49:26,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:49:27,148 INFO L321 Elim1Store]: treesize reduction 82, result has 62.4 percent of original size [2022-11-22 01:49:27,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 354 [2022-11-22 01:49:38,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:49:38,566 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:49:38,566 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 27 treesize of output 27 [2022-11-22 01:49:41,578 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 15 treesize of output 11 [2022-11-22 01:49:43,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:49:43,827 INFO L321 Elim1Store]: treesize reduction 52, result has 55.6 percent of original size [2022-11-22 01:49:43,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 81 [2022-11-22 01:49:47,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:49:47,737 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:49:47,737 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 27 treesize of output 27 [2022-11-22 01:49:50,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:49:51,017 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 01:49:51,018 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 15 treesize of output 15 [2022-11-22 01:49:59,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:49:59,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:49:59,548 INFO L321 Elim1Store]: treesize reduction 94, result has 36.5 percent of original size [2022-11-22 01:49:59,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 89 [2022-11-22 01:50:03,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:50:03,340 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:50:03,341 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 27 treesize of output 27 [2022-11-22 01:50:07,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:50:07,077 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:50:07,078 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 27 treesize of output 27 [2022-11-22 01:50:15,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:50:15,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:50:15,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:50:15,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:50:15,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:50:15,813 INFO L321 Elim1Store]: treesize reduction 31, result has 29.5 percent of original size [2022-11-22 01:50:15,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 137 treesize of output 142 [2022-11-22 01:50:20,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:50:20,225 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 01:50:20,225 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 27 treesize of output 27 [2022-11-22 01:50:23,845 INFO L321 Elim1Store]: treesize reduction 1529, result has 3.5 percent of original size [2022-11-22 01:50:23,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 case distinctions, treesize of input 39 treesize of output 61