./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/dll-queue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-queue-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 338b6951ab628b0237aa41c64d1786e44f90130a76a8fd0978f750b3fe39d026 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:35:16,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:35:16,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:35:16,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:35:16,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:35:16,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:35:16,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:35:16,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:35:16,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:35:16,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:35:16,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:35:16,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:35:16,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:35:16,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:35:16,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:35:16,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:35:16,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:35:16,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:35:16,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:35:16,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:35:16,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:35:16,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:35:16,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:35:16,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:35:16,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:35:16,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:35:16,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:35:16,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:35:16,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:35:16,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:35:16,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:35:16,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:35:16,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:35:16,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:35:16,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:35:16,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:35:16,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:35:16,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:35:16,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:35:16,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:35:16,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:35:16,138 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2021-11-21 01:35:16,182 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:35:16,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:35:16,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:35:16,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:35:16,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:35:16,183 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:35:16,184 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:35:16,184 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:35:16,184 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:35:16,184 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:35:16,184 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:35:16,184 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:35:16,185 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:35:16,185 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:35:16,193 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:35:16,194 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:35:16,194 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:35:16,194 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:35:16,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:35:16,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:35:16,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:35:16,196 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:35:16,196 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:35:16,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:35:16,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:35:16,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:35:16,197 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:35:16,197 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:35:16,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:35:16,197 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:35:16,198 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:35:16,198 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:35:16,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:35:16,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:35:16,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:35:16,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:35:16,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:35:16,199 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:35:16,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:35:16,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:35:16,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:35:16,200 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 338b6951ab628b0237aa41c64d1786e44f90130a76a8fd0978f750b3fe39d026 [2021-11-21 01:35:16,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:35:16,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:35:16,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:35:16,457 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:35:16,458 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:35:16,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/forester-heap/dll-queue-2.i [2021-11-21 01:35:16,546 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/data/de2b6cce9/46b0d7150ad74dbba79db5c950faf465/FLAGa2b9740ca [2021-11-21 01:35:17,066 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:35:17,067 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i [2021-11-21 01:35:17,082 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/data/de2b6cce9/46b0d7150ad74dbba79db5c950faf465/FLAGa2b9740ca [2021-11-21 01:35:17,359 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/data/de2b6cce9/46b0d7150ad74dbba79db5c950faf465 [2021-11-21 01:35:17,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:35:17,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:35:17,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:35:17,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:35:17,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:35:17,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:35:17" (1/1) ... [2021-11-21 01:35:17,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fec9ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:17, skipping insertion in model container [2021-11-21 01:35:17,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:35:17" (1/1) ... [2021-11-21 01:35:17,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:35:17,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:35:17,741 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22460,22473] [2021-11-21 01:35:17,745 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22531,22544] [2021-11-21 01:35:17,746 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22605,22618] [2021-11-21 01:35:17,747 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22697,22710] [2021-11-21 01:35:17,748 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22774,22787] [2021-11-21 01:35:17,749 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22869,22882] [2021-11-21 01:35:17,750 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22946,22959] [2021-11-21 01:35:17,751 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23029,23042] [2021-11-21 01:35:17,752 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23124,23137] [2021-11-21 01:35:17,753 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23201,23214] [2021-11-21 01:35:17,754 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23284,23297] [2021-11-21 01:35:17,755 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23373,23386] [2021-11-21 01:35:17,756 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23459,23472] [2021-11-21 01:35:17,758 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23604,23617] [2021-11-21 01:35:17,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:35:17,770 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:35:17,811 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22460,22473] [2021-11-21 01:35:17,812 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22531,22544] [2021-11-21 01:35:17,812 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22605,22618] [2021-11-21 01:35:17,813 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22697,22710] [2021-11-21 01:35:17,829 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22774,22787] [2021-11-21 01:35:17,830 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22869,22882] [2021-11-21 01:35:17,831 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22946,22959] [2021-11-21 01:35:17,832 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23029,23042] [2021-11-21 01:35:17,832 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23124,23137] [2021-11-21 01:35:17,833 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23201,23214] [2021-11-21 01:35:17,834 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23284,23297] [2021-11-21 01:35:17,835 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23373,23386] [2021-11-21 01:35:17,840 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23459,23472] [2021-11-21 01:35:17,844 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23604,23617] [2021-11-21 01:35:17,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:35:17,876 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:35:17,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:17 WrapperNode [2021-11-21 01:35:17,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:35:17,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:35:17,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:35:17,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:35:17,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:17" (1/1) ... [2021-11-21 01:35:17,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:17" (1/1) ... [2021-11-21 01:35:17,958 INFO L137 Inliner]: procedures = 119, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 226 [2021-11-21 01:35:17,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:35:17,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:35:17,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:35:17,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:35:17,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:17" (1/1) ... [2021-11-21 01:35:17,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:17" (1/1) ... [2021-11-21 01:35:17,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:17" (1/1) ... [2021-11-21 01:35:17,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:17" (1/1) ... [2021-11-21 01:35:18,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:17" (1/1) ... [2021-11-21 01:35:18,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:17" (1/1) ... [2021-11-21 01:35:18,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:17" (1/1) ... [2021-11-21 01:35:18,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:35:18,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:35:18,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:35:18,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:35:18,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:17" (1/1) ... [2021-11-21 01:35:18,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:35:18,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:35:18,087 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:35:18,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:35:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:35:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:35:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:35:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:35:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:35:18,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:35:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:35:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:35:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:35:18,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:35:18,256 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:35:18,258 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:35:18,739 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:35:18,786 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:35:18,791 INFO L301 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-21 01:35:18,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:35:18 BoogieIcfgContainer [2021-11-21 01:35:18,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:35:18,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:35:18,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:35:18,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:35:18,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:35:17" (1/3) ... [2021-11-21 01:35:18,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d9dbea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:35:18, skipping insertion in model container [2021-11-21 01:35:18,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:35:17" (2/3) ... [2021-11-21 01:35:18,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d9dbea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:35:18, skipping insertion in model container [2021-11-21 01:35:18,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:35:18" (3/3) ... [2021-11-21 01:35:18,804 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-queue-2.i [2021-11-21 01:35:18,812 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:35:18,812 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2021-11-21 01:35:18,884 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:35:18,891 INFO L339 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:35:18,891 INFO L340 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2021-11-21 01:35:18,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 166 states, 89 states have (on average 2.460674157303371) internal successors, (219), 165 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:18,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-21 01:35:18,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:18,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-21 01:35:18,946 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:35:18,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:18,956 INFO L85 PathProgramCache]: Analyzing trace with hash 14667, now seen corresponding path program 1 times [2021-11-21 01:35:18,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:18,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113594521] [2021-11-21 01:35:18,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:18,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:19,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:19,147 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:19,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113594521] [2021-11-21 01:35:19,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113594521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:19,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:19,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 01:35:19,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797292010] [2021-11-21 01:35:19,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:19,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:35:19,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:19,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:35:19,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:19,203 INFO L87 Difference]: Start difference. First operand has 166 states, 89 states have (on average 2.460674157303371) internal successors, (219), 165 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:19,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:19,454 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2021-11-21 01:35:19,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:35:19,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-11-21 01:35:19,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:19,471 INFO L225 Difference]: With dead ends: 161 [2021-11-21 01:35:19,472 INFO L226 Difference]: Without dead ends: 159 [2021-11-21 01:35:19,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:19,478 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 154 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:19,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 93 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:35:19,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-21 01:35:19,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 156. [2021-11-21 01:35:19,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 91 states have (on average 1.835164835164835) internal successors, (167), 155 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:19,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 167 transitions. [2021-11-21 01:35:19,557 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 167 transitions. Word has length 2 [2021-11-21 01:35:19,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:19,557 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 167 transitions. [2021-11-21 01:35:19,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:19,558 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 167 transitions. [2021-11-21 01:35:19,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-21 01:35:19,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:19,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-21 01:35:19,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:35:19,559 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:35:19,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:19,564 INFO L85 PathProgramCache]: Analyzing trace with hash 14668, now seen corresponding path program 1 times [2021-11-21 01:35:19,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:19,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315268823] [2021-11-21 01:35:19,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:19,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:19,635 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:19,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315268823] [2021-11-21 01:35:19,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315268823] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:19,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:19,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-21 01:35:19,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218543159] [2021-11-21 01:35:19,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:19,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:35:19,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:19,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:35:19,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:19,641 INFO L87 Difference]: Start difference. First operand 156 states and 167 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:19,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:19,771 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2021-11-21 01:35:19,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:35:19,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-11-21 01:35:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:19,774 INFO L225 Difference]: With dead ends: 147 [2021-11-21 01:35:19,774 INFO L226 Difference]: Without dead ends: 147 [2021-11-21 01:35:19,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:19,776 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 141 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:19,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 98 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:35:19,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-21 01:35:19,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2021-11-21 01:35:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 91 states have (on average 1.7032967032967032) internal successors, (155), 144 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:19,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 155 transitions. [2021-11-21 01:35:19,788 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 155 transitions. Word has length 2 [2021-11-21 01:35:19,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:19,789 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 155 transitions. [2021-11-21 01:35:19,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:19,789 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 155 transitions. [2021-11-21 01:35:19,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:35:19,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:19,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:19,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:35:19,790 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:35:19,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:19,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1012821487, now seen corresponding path program 1 times [2021-11-21 01:35:19,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:19,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216548110] [2021-11-21 01:35:19,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:19,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:19,947 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:19,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216548110] [2021-11-21 01:35:19,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216548110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:19,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:19,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:35:19,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768715440] [2021-11-21 01:35:19,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:19,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:35:19,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:19,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:35:19,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:35:19,949 INFO L87 Difference]: Start difference. First operand 145 states and 155 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:20,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:20,124 INFO L93 Difference]: Finished difference Result 152 states and 161 transitions. [2021-11-21 01:35:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:35:20,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-21 01:35:20,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:20,130 INFO L225 Difference]: With dead ends: 152 [2021-11-21 01:35:20,130 INFO L226 Difference]: Without dead ends: 152 [2021-11-21 01:35:20,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:35:20,135 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 247 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:20,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 97 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:35:20,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-21 01:35:20,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 145. [2021-11-21 01:35:20,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 97 states have (on average 1.6391752577319587) internal successors, (159), 144 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:20,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 159 transitions. [2021-11-21 01:35:20,160 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 159 transitions. Word has length 7 [2021-11-21 01:35:20,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:20,160 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 159 transitions. [2021-11-21 01:35:20,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:20,161 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 159 transitions. [2021-11-21 01:35:20,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:35:20,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:20,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:20,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:35:20,164 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:35:20,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:20,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1012821486, now seen corresponding path program 1 times [2021-11-21 01:35:20,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:20,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348533687] [2021-11-21 01:35:20,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:20,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:20,314 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:20,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348533687] [2021-11-21 01:35:20,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348533687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:20,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:20,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:35:20,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363049403] [2021-11-21 01:35:20,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:20,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:35:20,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:20,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:35:20,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:35:20,317 INFO L87 Difference]: Start difference. First operand 145 states and 159 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:20,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:20,615 INFO L93 Difference]: Finished difference Result 235 states and 250 transitions. [2021-11-21 01:35:20,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:35:20,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-21 01:35:20,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:20,619 INFO L225 Difference]: With dead ends: 235 [2021-11-21 01:35:20,619 INFO L226 Difference]: Without dead ends: 235 [2021-11-21 01:35:20,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:35:20,620 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 310 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:20,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 202 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:35:20,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-21 01:35:20,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 151. [2021-11-21 01:35:20,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 103 states have (on average 1.6213592233009708) internal successors, (167), 150 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:20,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 167 transitions. [2021-11-21 01:35:20,645 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 167 transitions. Word has length 7 [2021-11-21 01:35:20,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:20,645 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 167 transitions. [2021-11-21 01:35:20,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:20,646 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 167 transitions. [2021-11-21 01:35:20,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:35:20,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:20,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:20,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:35:20,650 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:35:20,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:20,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1332694170, now seen corresponding path program 1 times [2021-11-21 01:35:20,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:20,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549023212] [2021-11-21 01:35:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:20,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:20,732 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:20,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549023212] [2021-11-21 01:35:20,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549023212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:20,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:20,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:35:20,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852178464] [2021-11-21 01:35:20,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:20,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:35:20,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:20,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:35:20,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:20,736 INFO L87 Difference]: Start difference. First operand 151 states and 167 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:20,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:20,782 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2021-11-21 01:35:20,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:35:20,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 01:35:20,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:20,783 INFO L225 Difference]: With dead ends: 141 [2021-11-21 01:35:20,784 INFO L226 Difference]: Without dead ends: 141 [2021-11-21 01:35:20,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:20,785 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 119 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:20,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 114 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:35:20,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-21 01:35:20,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-11-21 01:35:20,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 98 states have (on average 1.5918367346938775) internal successors, (156), 140 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 156 transitions. [2021-11-21 01:35:20,794 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 156 transitions. Word has length 8 [2021-11-21 01:35:20,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:20,794 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 156 transitions. [2021-11-21 01:35:20,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:20,795 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 156 transitions. [2021-11-21 01:35:20,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 01:35:20,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:20,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:20,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:35:20,796 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:35:20,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:20,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1636537440, now seen corresponding path program 1 times [2021-11-21 01:35:20,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:20,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947589126] [2021-11-21 01:35:20,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:20,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:20,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:20,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947589126] [2021-11-21 01:35:20,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947589126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:20,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:20,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:35:20,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457415470] [2021-11-21 01:35:20,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:20,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:35:20,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:20,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:35:20,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:35:20,905 INFO L87 Difference]: Start difference. First operand 141 states and 156 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:21,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:21,059 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2021-11-21 01:35:21,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:35:21,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-21 01:35:21,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:21,060 INFO L225 Difference]: With dead ends: 140 [2021-11-21 01:35:21,060 INFO L226 Difference]: Without dead ends: 140 [2021-11-21 01:35:21,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:35:21,062 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 5 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:21,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 357 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:35:21,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-21 01:35:21,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-11-21 01:35:21,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 98 states have (on average 1.5714285714285714) internal successors, (154), 139 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:21,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2021-11-21 01:35:21,068 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 9 [2021-11-21 01:35:21,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:21,069 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2021-11-21 01:35:21,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:21,069 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2021-11-21 01:35:21,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 01:35:21,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:21,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:21,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:35:21,070 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:35:21,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:21,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1636537439, now seen corresponding path program 1 times [2021-11-21 01:35:21,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:21,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555544470] [2021-11-21 01:35:21,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:21,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:21,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:21,167 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:21,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555544470] [2021-11-21 01:35:21,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555544470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:21,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:21,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:35:21,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158121054] [2021-11-21 01:35:21,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:21,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:35:21,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:21,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:35:21,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:35:21,170 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:21,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:21,301 INFO L93 Difference]: Finished difference Result 139 states and 152 transitions. [2021-11-21 01:35:21,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:35:21,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-21 01:35:21,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:21,303 INFO L225 Difference]: With dead ends: 139 [2021-11-21 01:35:21,303 INFO L226 Difference]: Without dead ends: 139 [2021-11-21 01:35:21,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:35:21,305 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 4 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:21,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 357 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:35:21,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-21 01:35:21,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-11-21 01:35:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 98 states have (on average 1.5510204081632653) internal successors, (152), 138 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:21,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2021-11-21 01:35:21,316 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 9 [2021-11-21 01:35:21,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:21,316 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2021-11-21 01:35:21,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:21,317 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2021-11-21 01:35:21,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:35:21,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:21,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:21,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:35:21,318 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:35:21,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:21,324 INFO L85 PathProgramCache]: Analyzing trace with hash 754854527, now seen corresponding path program 1 times [2021-11-21 01:35:21,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:21,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997441612] [2021-11-21 01:35:21,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:21,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:21,439 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:21,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997441612] [2021-11-21 01:35:21,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997441612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:21,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:21,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 01:35:21,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303586272] [2021-11-21 01:35:21,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:21,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:35:21,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:21,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:35:21,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:35:21,441 INFO L87 Difference]: Start difference. First operand 139 states and 152 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:21,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:21,712 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2021-11-21 01:35:21,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:35:21,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 01:35:21,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:21,714 INFO L225 Difference]: With dead ends: 142 [2021-11-21 01:35:21,714 INFO L226 Difference]: Without dead ends: 142 [2021-11-21 01:35:21,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:35:21,715 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 224 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:21,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 303 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:35:21,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-21 01:35:21,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138. [2021-11-21 01:35:21,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 137 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:21,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 151 transitions. [2021-11-21 01:35:21,720 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 151 transitions. Word has length 11 [2021-11-21 01:35:21,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:21,720 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 151 transitions. [2021-11-21 01:35:21,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:21,721 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 151 transitions. [2021-11-21 01:35:21,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:35:21,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:21,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:21,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:35:21,721 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:35:21,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:21,723 INFO L85 PathProgramCache]: Analyzing trace with hash 754854528, now seen corresponding path program 1 times [2021-11-21 01:35:21,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:21,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40665859] [2021-11-21 01:35:21,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:21,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:21,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:21,936 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:21,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40665859] [2021-11-21 01:35:21,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40665859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:21,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:21,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:35:21,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364037787] [2021-11-21 01:35:21,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:21,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:35:21,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:21,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:35:21,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:35:21,937 INFO L87 Difference]: Start difference. First operand 138 states and 151 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:22,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:22,444 INFO L93 Difference]: Finished difference Result 203 states and 216 transitions. [2021-11-21 01:35:22,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 01:35:22,445 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 01:35:22,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:22,446 INFO L225 Difference]: With dead ends: 203 [2021-11-21 01:35:22,446 INFO L226 Difference]: Without dead ends: 203 [2021-11-21 01:35:22,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:35:22,447 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 292 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:22,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 500 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:35:22,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-21 01:35:22,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 125. [2021-11-21 01:35:22,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 92 states have (on average 1.4891304347826086) internal successors, (137), 124 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:22,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2021-11-21 01:35:22,452 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 11 [2021-11-21 01:35:22,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:22,453 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2021-11-21 01:35:22,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:22,453 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2021-11-21 01:35:22,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 01:35:22,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:22,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:22,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:35:22,457 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:35:22,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:22,458 INFO L85 PathProgramCache]: Analyzing trace with hash 42463835, now seen corresponding path program 1 times [2021-11-21 01:35:22,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:22,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086735724] [2021-11-21 01:35:22,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:22,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:22,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:22,505 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:22,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086735724] [2021-11-21 01:35:22,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086735724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:22,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:22,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:35:22,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232456953] [2021-11-21 01:35:22,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:22,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:35:22,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:22,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:35:22,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:22,507 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:22,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:22,554 INFO L93 Difference]: Finished difference Result 173 states and 191 transitions. [2021-11-21 01:35:22,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:35:22,554 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-21 01:35:22,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:22,556 INFO L225 Difference]: With dead ends: 173 [2021-11-21 01:35:22,556 INFO L226 Difference]: Without dead ends: 173 [2021-11-21 01:35:22,556 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:35:22,557 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 39 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:22,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 206 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:35:22,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-21 01:35:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2021-11-21 01:35:22,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 105 states have (on average 1.438095238095238) internal successors, (151), 137 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:22,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 151 transitions. [2021-11-21 01:35:22,563 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 151 transitions. Word has length 14 [2021-11-21 01:35:22,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:22,563 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 151 transitions. [2021-11-21 01:35:22,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:22,564 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 151 transitions. [2021-11-21 01:35:22,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 01:35:22,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:22,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:22,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:35:22,565 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr65REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:35:22,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:22,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2115560054, now seen corresponding path program 1 times [2021-11-21 01:35:22,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:22,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050744059] [2021-11-21 01:35:22,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:22,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:22,635 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:22,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050744059] [2021-11-21 01:35:22,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050744059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:22,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:22,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:35:22,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003700025] [2021-11-21 01:35:22,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:22,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:35:22,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:22,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:35:22,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:35:22,638 INFO L87 Difference]: Start difference. First operand 138 states and 151 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:22,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:22,764 INFO L93 Difference]: Finished difference Result 143 states and 156 transitions. [2021-11-21 01:35:22,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:35:22,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-21 01:35:22,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:22,766 INFO L225 Difference]: With dead ends: 143 [2021-11-21 01:35:22,766 INFO L226 Difference]: Without dead ends: 143 [2021-11-21 01:35:22,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:35:22,768 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 5 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:22,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 396 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:35:22,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-21 01:35:22,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2021-11-21 01:35:22,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 108 states have (on average 1.4259259259259258) internal successors, (154), 140 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:22,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 154 transitions. [2021-11-21 01:35:22,774 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 154 transitions. Word has length 17 [2021-11-21 01:35:22,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:22,774 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 154 transitions. [2021-11-21 01:35:22,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:22,775 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 154 transitions. [2021-11-21 01:35:22,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 01:35:22,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:22,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:22,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:35:22,777 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:35:22,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:22,777 INFO L85 PathProgramCache]: Analyzing trace with hash 658823248, now seen corresponding path program 1 times [2021-11-21 01:35:22,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:22,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008415227] [2021-11-21 01:35:22,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:22,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:22,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:22,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:22,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008415227] [2021-11-21 01:35:22,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008415227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:22,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:22,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:35:22,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290638713] [2021-11-21 01:35:22,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:22,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:35:22,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:22,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:35:22,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:35:22,882 INFO L87 Difference]: Start difference. First operand 141 states and 154 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:23,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:23,173 INFO L93 Difference]: Finished difference Result 220 states and 237 transitions. [2021-11-21 01:35:23,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:35:23,173 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-21 01:35:23,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:23,175 INFO L225 Difference]: With dead ends: 220 [2021-11-21 01:35:23,175 INFO L226 Difference]: Without dead ends: 220 [2021-11-21 01:35:23,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:35:23,176 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 287 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:23,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 444 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:35:23,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-21 01:35:23,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 145. [2021-11-21 01:35:23,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 112 states have (on average 1.4107142857142858) internal successors, (158), 144 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:23,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 158 transitions. [2021-11-21 01:35:23,181 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 158 transitions. Word has length 17 [2021-11-21 01:35:23,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:23,181 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 158 transitions. [2021-11-21 01:35:23,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:23,182 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 158 transitions. [2021-11-21 01:35:23,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 01:35:23,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:23,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:23,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 01:35:23,183 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:35:23,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:23,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1158449302, now seen corresponding path program 1 times [2021-11-21 01:35:23,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:23,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415034887] [2021-11-21 01:35:23,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:23,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:23,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:23,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415034887] [2021-11-21 01:35:23,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415034887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:23,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:23,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:35:23,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528948005] [2021-11-21 01:35:23,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:23,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:35:23,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:23,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:35:23,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:35:23,227 INFO L87 Difference]: Start difference. First operand 145 states and 158 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:23,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:23,323 INFO L93 Difference]: Finished difference Result 145 states and 157 transitions. [2021-11-21 01:35:23,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:35:23,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-21 01:35:23,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:23,324 INFO L225 Difference]: With dead ends: 145 [2021-11-21 01:35:23,324 INFO L226 Difference]: Without dead ends: 145 [2021-11-21 01:35:23,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:35:23,325 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 117 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:23,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 261 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:35:23,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-21 01:35:23,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-11-21 01:35:23,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 112 states have (on average 1.4017857142857142) internal successors, (157), 144 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:23,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 157 transitions. [2021-11-21 01:35:23,330 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 157 transitions. Word has length 18 [2021-11-21 01:35:23,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:23,330 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 157 transitions. [2021-11-21 01:35:23,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:23,331 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 157 transitions. [2021-11-21 01:35:23,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-21 01:35:23,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:23,331 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:23,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 01:35:23,332 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:35:23,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:23,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1300477052, now seen corresponding path program 1 times [2021-11-21 01:35:23,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:23,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641875040] [2021-11-21 01:35:23,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:23,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:23,390 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:23,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641875040] [2021-11-21 01:35:23,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641875040] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:35:23,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598869254] [2021-11-21 01:35:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:23,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:35:23,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:35:23,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:35:23,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:35:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:23,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-21 01:35:23,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:35:23,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:35:23,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:35:23,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-21 01:35:23,628 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-21 01:35:23,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 29 treesize of output 33 [2021-11-21 01:35:23,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-21 01:35:23,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:23,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:23,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 20 [2021-11-21 01:35:23,702 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-11-21 01:35:23,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 23 [2021-11-21 01:35:23,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:23,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:23,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:23,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:35:23,945 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-21 01:35:23,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2021-11-21 01:35:23,963 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-21 01:35:23,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2021-11-21 01:35:23,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:23,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:35:24,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:24,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598869254] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:35:24,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2109310934] [2021-11-21 01:35:24,224 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-21 01:35:24,224 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:35:24,229 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:35:24,234 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:35:24,234 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:35:24,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:24,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:24,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:35:24,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:24,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-21 01:35:24,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-21 01:35:24,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-21 01:35:24,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:24,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:35:24,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:24,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:35:24,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:24,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:35:24,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:24,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-21 01:35:24,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:24,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:24,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:24,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:35:24,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:24,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:24,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:24,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:35:27,120 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:35:28,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2109310934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:28,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:35:28,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 5, 4] total 14 [2021-11-21 01:35:28,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854172759] [2021-11-21 01:35:28,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:28,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:35:28,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:28,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:35:28,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:35:28,045 INFO L87 Difference]: Start difference. First operand 145 states and 157 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:28,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:28,703 INFO L93 Difference]: Finished difference Result 157 states and 169 transitions. [2021-11-21 01:35:28,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 01:35:28,703 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-21 01:35:28,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:28,704 INFO L225 Difference]: With dead ends: 157 [2021-11-21 01:35:28,705 INFO L226 Difference]: Without dead ends: 157 [2021-11-21 01:35:28,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:35:28,706 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 21 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:28,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 333 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:35:28,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-21 01:35:28,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2021-11-21 01:35:28,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 118 states have (on average 1.3898305084745763) internal successors, (164), 150 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 164 transitions. [2021-11-21 01:35:28,711 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 164 transitions. Word has length 21 [2021-11-21 01:35:28,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:28,712 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 164 transitions. [2021-11-21 01:35:28,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:28,712 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 164 transitions. [2021-11-21 01:35:28,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-21 01:35:28,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:28,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:28,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:35:28,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-21 01:35:28,914 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:35:28,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:28,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1300475953, now seen corresponding path program 1 times [2021-11-21 01:35:28,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:28,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080421935] [2021-11-21 01:35:28,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:28,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:28,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:28,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080421935] [2021-11-21 01:35:28,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080421935] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:35:28,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493503407] [2021-11-21 01:35:28,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:28,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:35:28,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:35:28,984 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:35:29,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:35:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:29,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 01:35:29,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:35:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:29,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:35:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:29,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493503407] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:35:29,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2121918132] [2021-11-21 01:35:29,305 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-21 01:35:29,305 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:35:29,306 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:35:29,306 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:35:29,306 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:35:29,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:29,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:29,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:35:29,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-21 01:35:29,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:29,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-21 01:35:29,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-21 01:35:29,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:29,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:35:29,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:29,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:35:29,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:29,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:35:29,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:29,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-21 01:35:29,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:29,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:29,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:29,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:35:29,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:29,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:29,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:29,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:35:31,974 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:35:32,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2121918132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:32,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:35:32,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [3, 3, 3] total 16 [2021-11-21 01:35:32,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566890725] [2021-11-21 01:35:32,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:32,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:35:32,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:32,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:35:32,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:35:32,786 INFO L87 Difference]: Start difference. First operand 151 states and 164 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:33,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:33,229 INFO L93 Difference]: Finished difference Result 152 states and 164 transitions. [2021-11-21 01:35:33,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:35:33,230 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-21 01:35:33,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:33,231 INFO L225 Difference]: With dead ends: 152 [2021-11-21 01:35:33,231 INFO L226 Difference]: Without dead ends: 137 [2021-11-21 01:35:33,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:35:33,232 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 20 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:33,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 250 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:35:33,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-21 01:35:33,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-21 01:35:33,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 104 states have (on average 1.4230769230769231) internal successors, (148), 136 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:33,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions. [2021-11-21 01:35:33,237 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 21 [2021-11-21 01:35:33,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:33,237 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 148 transitions. [2021-11-21 01:35:33,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:33,238 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 148 transitions. [2021-11-21 01:35:33,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 01:35:33,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:33,244 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 01:35:33,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:35:33,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-21 01:35:33,445 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:35:33,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:33,446 INFO L85 PathProgramCache]: Analyzing trace with hash -516802388, now seen corresponding path program 1 times [2021-11-21 01:35:33,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:33,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326877469] [2021-11-21 01:35:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:33,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:33,623 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:33,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326877469] [2021-11-21 01:35:33,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326877469] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:35:33,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331120724] [2021-11-21 01:35:33,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:33,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:35:33,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:35:33,630 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:35:33,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:35:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:33,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-21 01:35:33,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:35:33,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:35:33,794 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:35:33,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-21 01:35:33,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 16 [2021-11-21 01:35:33,921 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 01:35:33,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 28 [2021-11-21 01:35:34,046 INFO L354 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2021-11-21 01:35:34,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 47 [2021-11-21 01:35:34,133 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-21 01:35:34,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 44 [2021-11-21 01:35:34,330 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 01:35:34,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 18 [2021-11-21 01:35:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:34,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:35:38,510 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem4#1.offset| Int) (|v_ULTIMATE.start_main_~item~0#1.offset_77| Int) (v_DerPreprocessor_3 Int)) (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base|) (+ |ULTIMATE.start_main_#t~mem4#1.offset| 4) |c_ULTIMATE.start_main_~item~0#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store .cse0 .cse1 (store (store (select .cse0 .cse1) |v_ULTIMATE.start_main_~item~0#1.offset_77| 0) (+ 8 |v_ULTIMATE.start_main_~item~0#1.offset_77|) v_DerPreprocessor_3)))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2021-11-21 01:35:40,451 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem4#1.offset| Int) (|v_ULTIMATE.start_main_~item~0#1.offset_77| Int) (v_DerPreprocessor_3 Int)) (not (= (select (select (let ((.cse0 (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) (+ |ULTIMATE.start_main_#t~mem4#1.offset| 4) |c_ULTIMATE.start_main_~item~0#1.base|))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store .cse0 .cse1 (store (store (select .cse0 .cse1) |v_ULTIMATE.start_main_~item~0#1.offset_77| 0) (+ 8 |v_ULTIMATE.start_main_~item~0#1.offset_77|) v_DerPreprocessor_3)))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2021-11-21 01:35:40,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28507 treesize of output 28251 [2021-11-21 01:35:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:43,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331120724] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:35:43,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [3943194] [2021-11-21 01:35:43,512 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2021-11-21 01:35:43,512 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:35:43,512 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:35:43,513 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:35:43,513 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:35:43,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:43,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:43,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:35:43,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:43,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-21 01:35:43,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-21 01:35:43,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-21 01:35:43,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:43,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:35:43,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:43,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:35:43,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:43,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:35:43,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:43,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:43,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:43,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:35:43,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:43,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-21 01:35:43,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:43,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:43,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:43,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:35:44,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:44,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:44,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:44,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:44,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:44,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:35:44,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:44,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-11-21 01:35:44,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:44,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 52 [2021-11-21 01:35:44,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:44,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:44,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-21 01:35:44,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:44,459 INFO L354 Elim1Store]: treesize reduction 78, result has 17.9 percent of original size [2021-11-21 01:35:44,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 211 treesize of output 164 [2021-11-21 01:35:44,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:44,503 INFO L354 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2021-11-21 01:35:44,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 203 treesize of output 184 [2021-11-21 01:35:44,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:44,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:44,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 138 [2021-11-21 01:35:44,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:44,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:44,822 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-21 01:35:44,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 39 treesize of output 43 [2021-11-21 01:35:44,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:44,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:44,899 INFO L354 Elim1Store]: treesize reduction 86, result has 21.8 percent of original size [2021-11-21 01:35:44,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 133 treesize of output 113 [2021-11-21 01:35:44,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:44,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:44,937 INFO L354 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2021-11-21 01:35:44,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 129 treesize of output 130 [2021-11-21 01:35:45,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:45,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:45,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:45,255 INFO L354 Elim1Store]: treesize reduction 154, result has 13.5 percent of original size [2021-11-21 01:35:45,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 163 treesize of output 131 [2021-11-21 01:35:45,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:45,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:45,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:45,296 INFO L354 Elim1Store]: treesize reduction 142, result has 14.5 percent of original size [2021-11-21 01:35:45,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 116 treesize of output 105 [2021-11-21 01:35:45,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:45,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:45,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:45,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:35:46,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2021-11-21 01:35:46,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2021-11-21 01:35:46,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 43 [2021-11-21 01:35:46,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 78 [2021-11-21 01:35:46,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,917 INFO L354 Elim1Store]: treesize reduction 150, result has 17.1 percent of original size [2021-11-21 01:35:46,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 254 treesize of output 213 [2021-11-21 01:35:46,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,973 INFO L354 Elim1Store]: treesize reduction 134, result has 18.8 percent of original size [2021-11-21 01:35:46,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 246 treesize of output 233 [2021-11-21 01:35:46,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:46,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:47,040 INFO L354 Elim1Store]: treesize reduction 244, result has 11.9 percent of original size [2021-11-21 01:35:47,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 238 treesize of output 211 [2021-11-21 01:35:47,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:47,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:47,438 INFO L354 Elim1Store]: treesize reduction 192, result has 16.5 percent of original size [2021-11-21 01:35:47,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 8 new quantified variables, introduced 14 case distinctions, treesize of input 325 treesize of output 233 [2021-11-21 01:35:47,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:47,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:47,525 INFO L354 Elim1Store]: treesize reduction 224, result has 17.0 percent of original size [2021-11-21 01:35:47,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 new quantified variables, introduced 14 case distinctions, treesize of input 265 treesize of output 255 [2021-11-21 01:35:47,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:47,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:47,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:47,559 INFO L354 Elim1Store]: treesize reduction 86, result has 19.6 percent of original size [2021-11-21 01:35:47,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 261 treesize of output 258 [2021-11-21 01:35:47,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:47,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:47,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:47,732 INFO L354 Elim1Store]: treesize reduction 154, result has 13.5 percent of original size [2021-11-21 01:35:47,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 163 treesize of output 131 [2021-11-21 01:35:47,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:47,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:47,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:47,774 INFO L354 Elim1Store]: treesize reduction 174, result has 13.9 percent of original size [2021-11-21 01:35:47,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 144 treesize of output 133 [2021-11-21 01:35:47,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:47,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:47,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:47,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:35:50,397 INFO L354 Elim1Store]: treesize reduction 120, result has 17.2 percent of original size [2021-11-21 01:35:50,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 354 treesize of output 359 [2021-11-21 01:35:50,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:50,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:50,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:50,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:51,007 INFO L354 Elim1Store]: treesize reduction 20, result has 50.0 percent of original size [2021-11-21 01:35:51,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 new quantified variables, introduced 7 case distinctions, treesize of input 439 treesize of output 413 [2021-11-21 01:35:51,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:51,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:51,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:51,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:51,043 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-11-21 01:35:51,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 case distinctions, treesize of input 443 treesize of output 437 [2021-11-21 01:35:51,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:51,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:51,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:51,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:51,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:51,077 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 01:35:51,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 441 treesize of output 424 [2021-11-21 01:35:52,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:52,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:52,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:52,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:52,340 INFO L354 Elim1Store]: treesize reduction 166, result has 15.7 percent of original size [2021-11-21 01:35:52,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 new quantified variables, introduced 10 case distinctions, treesize of input 473 treesize of output 406 [2021-11-21 01:35:52,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:52,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:52,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:52,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:52,414 INFO L354 Elim1Store]: treesize reduction 252, result has 11.6 percent of original size [2021-11-21 01:35:52,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 465 treesize of output 424 [2021-11-21 01:35:52,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:52,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:52,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:52,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:52,468 INFO L354 Elim1Store]: treesize reduction 150, result has 17.1 percent of original size [2021-11-21 01:35:52,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 new quantified variables, introduced 10 case distinctions, treesize of input 426 treesize of output 411 [2021-11-21 01:35:53,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:53,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:53,892 INFO L354 Elim1Store]: treesize reduction 434, result has 13.5 percent of original size [2021-11-21 01:35:53,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 28 case distinctions, treesize of input 595 treesize of output 484 [2021-11-21 01:35:53,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:53,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:53,995 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-11-21 01:35:53,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 587 treesize of output 570 [2021-11-21 01:35:54,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:54,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:54,163 INFO L354 Elim1Store]: treesize reduction 442, result has 16.0 percent of original size [2021-11-21 01:35:54,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 572 treesize of output 549 [2021-11-21 01:35:56,462 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:36:00,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [3943194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:36:00,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:36:00,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [11, 11, 11] total 42 [2021-11-21 01:36:00,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161663313] [2021-11-21 01:36:00,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:36:00,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:36:00,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:36:00,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:36:00,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1346, Unknown=6, NotChecked=154, Total=1722 [2021-11-21 01:36:00,308 INFO L87 Difference]: Start difference. First operand 137 states and 148 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:36:01,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:36:01,953 INFO L93 Difference]: Finished difference Result 175 states and 191 transitions. [2021-11-21 01:36:01,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-21 01:36:01,954 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-21 01:36:01,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:36:01,955 INFO L225 Difference]: With dead ends: 175 [2021-11-21 01:36:01,955 INFO L226 Difference]: Without dead ends: 175 [2021-11-21 01:36:01,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=261, Invalid=1547, Unknown=6, NotChecked=166, Total=1980 [2021-11-21 01:36:01,957 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 29 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:36:01,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 479 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 586 Invalid, 0 Unknown, 101 Unchecked, 1.0s Time] [2021-11-21 01:36:01,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-21 01:36:01,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 165. [2021-11-21 01:36:01,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 132 states have (on average 1.371212121212121) internal successors, (181), 164 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:36:01,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 181 transitions. [2021-11-21 01:36:01,963 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 181 transitions. Word has length 27 [2021-11-21 01:36:01,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:36:01,963 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 181 transitions. [2021-11-21 01:36:01,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:36:01,963 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 181 transitions. [2021-11-21 01:36:01,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-21 01:36:01,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:01,964 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:36:01,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-21 01:36:02,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-21 01:36:02,186 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:36:02,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:02,187 INFO L85 PathProgramCache]: Analyzing trace with hash -711321867, now seen corresponding path program 1 times [2021-11-21 01:36:02,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:36:02,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433446890] [2021-11-21 01:36:02,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:02,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:36:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:02,441 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:36:02,442 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:36:02,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433446890] [2021-11-21 01:36:02,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433446890] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:36:02,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008637085] [2021-11-21 01:36:02,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:02,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:36:02,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:36:02,443 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:36:02,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:36:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:02,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-21 01:36:02,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:36:02,537 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:36:02,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 18 [2021-11-21 01:36:02,616 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-21 01:36:02,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 26 [2021-11-21 01:36:02,773 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-21 01:36:02,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 26 [2021-11-21 01:36:02,846 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-21 01:36:02,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2021-11-21 01:36:02,880 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:36:02,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:36:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:36:03,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008637085] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:36:03,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [347527073] [2021-11-21 01:36:03,097 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-21 01:36:03,097 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:36:03,097 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:36:03,098 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:36:03,098 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:36:03,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:36:03,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-21 01:36:03,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-21 01:36:03,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-21 01:36:03,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:36:03,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:36:03,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:36:03,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:36:03,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-21 01:36:03,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:36:03,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:36:03,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-11-21 01:36:03,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-21 01:36:03,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 52 [2021-11-21 01:36:03,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,916 INFO L354 Elim1Store]: treesize reduction 78, result has 17.9 percent of original size [2021-11-21 01:36:03,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 211 treesize of output 164 [2021-11-21 01:36:03,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,960 INFO L354 Elim1Store]: treesize reduction 180, result has 11.8 percent of original size [2021-11-21 01:36:03,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 203 treesize of output 173 [2021-11-21 01:36:03,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:03,989 INFO L354 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2021-11-21 01:36:03,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 164 treesize of output 153 [2021-11-21 01:36:04,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:04,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:04,294 INFO L354 Elim1Store]: treesize reduction 86, result has 21.8 percent of original size [2021-11-21 01:36:04,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 133 treesize of output 113 [2021-11-21 01:36:04,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:04,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:04,332 INFO L354 Elim1Store]: treesize reduction 78, result has 23.5 percent of original size [2021-11-21 01:36:04,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 101 treesize of output 102 [2021-11-21 01:36:04,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:04,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:04,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:04,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-21 01:36:04,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:04,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:04,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:04,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:04,688 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-21 01:36:04,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 46 [2021-11-21 01:36:04,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:04,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:04,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:04,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:04,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:04,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-21 01:36:04,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:04,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:04,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:04,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:36:05,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:05,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:05,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:05,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:05,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:05,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:05,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:05,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:05,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:05,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2021-11-21 01:36:05,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:05,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:05,829 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-21 01:36:05,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 78 [2021-11-21 01:36:05,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:05,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:05,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:05,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:05,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2021-11-21 01:36:05,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:05,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:05,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:05,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 46 [2021-11-21 01:36:06,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:06,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:06,236 INFO L354 Elim1Store]: treesize reduction 150, result has 17.1 percent of original size [2021-11-21 01:36:06,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 254 treesize of output 213 [2021-11-21 01:36:06,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:06,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:06,298 INFO L354 Elim1Store]: treesize reduction 134, result has 18.8 percent of original size [2021-11-21 01:36:06,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 246 treesize of output 233 [2021-11-21 01:36:06,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:06,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:06,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:06,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:06,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:06,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 184 [2021-11-21 01:36:06,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:06,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:06,772 INFO L354 Elim1Store]: treesize reduction 158, result has 19.4 percent of original size [2021-11-21 01:36:06,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 new quantified variables, introduced 14 case distinctions, treesize of input 305 treesize of output 218 [2021-11-21 01:36:06,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:06,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:06,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:06,807 INFO L354 Elim1Store]: treesize reduction 86, result has 19.6 percent of original size [2021-11-21 01:36:06,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 245 treesize of output 242 [2021-11-21 01:36:06,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:06,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:06,867 INFO L354 Elim1Store]: treesize reduction 186, result has 19.8 percent of original size [2021-11-21 01:36:06,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 230 treesize of output 233 [2021-11-21 01:36:07,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:07,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:07,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:07,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:07,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:07,543 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-21 01:36:07,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 254 treesize of output 212 [2021-11-21 01:36:07,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:07,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:07,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:07,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:07,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:07,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:07,589 INFO L354 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2021-11-21 01:36:07,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 235 treesize of output 243 [2021-11-21 01:36:07,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:07,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:07,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:07,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:07,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:07,629 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-21 01:36:07,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 231 treesize of output 230 [2021-11-21 01:36:09,615 INFO L354 Elim1Store]: treesize reduction 170, result has 15.0 percent of original size [2021-11-21 01:36:09,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 469 treesize of output 475 [2021-11-21 01:36:10,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:10,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:10,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:10,488 INFO L354 Elim1Store]: treesize reduction 208, result has 15.4 percent of original size [2021-11-21 01:36:10,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 536 treesize of output 480 [2021-11-21 01:36:10,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:10,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:10,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:10,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:10,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:10,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:10,563 INFO L354 Elim1Store]: treesize reduction 176, result has 16.6 percent of original size [2021-11-21 01:36:10,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 545 treesize of output 525 [2021-11-21 01:36:10,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:10,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:10,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:10,642 INFO L354 Elim1Store]: treesize reduction 252, result has 15.4 percent of original size [2021-11-21 01:36:10,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 530 treesize of output 515 [2021-11-21 01:36:11,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:11,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:11,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:11,643 INFO L354 Elim1Store]: treesize reduction 312, result has 12.6 percent of original size [2021-11-21 01:36:11,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 619 treesize of output 517 [2021-11-21 01:36:11,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:11,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:11,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:11,722 INFO L354 Elim1Store]: treesize reduction 388, result has 10.2 percent of original size [2021-11-21 01:36:11,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 case distinctions, treesize of input 611 treesize of output 567 [2021-11-21 01:36:11,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:11,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:11,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:11,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:11,814 INFO L354 Elim1Store]: treesize reduction 332, result has 13.8 percent of original size [2021-11-21 01:36:11,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 572 treesize of output 555 [2021-11-21 01:36:13,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:13,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:13,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:13,826 INFO L354 Elim1Store]: treesize reduction 636, result has 9.9 percent of original size [2021-11-21 01:36:13,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 45 case distinctions, treesize of input 718 treesize of output 651 [2021-11-21 01:36:13,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:13,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:13,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:14,148 INFO L354 Elim1Store]: treesize reduction 764, result has 10.1 percent of original size [2021-11-21 01:36:14,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 45 case distinctions, treesize of input 726 treesize of output 612 [2021-11-21 01:36:14,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:14,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:14,244 INFO L354 Elim1Store]: treesize reduction 332, result has 13.3 percent of original size [2021-11-21 01:36:14,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 758 treesize of output 743 [2021-11-21 01:36:16,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:16,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:16,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:16,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:16,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:16,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:16,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:16,191 INFO L354 Elim1Store]: treesize reduction 254, result has 7.0 percent of original size [2021-11-21 01:36:16,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 16 case distinctions, treesize of input 411 treesize of output 279 [2021-11-21 01:36:16,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:16,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:16,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:16,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:16,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:16,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:16,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:16,245 INFO L354 Elim1Store]: treesize reduction 262, result has 6.8 percent of original size [2021-11-21 01:36:16,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 16 case distinctions, treesize of input 392 treesize of output 320 [2021-11-21 01:36:16,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:16,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:16,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:16,284 INFO L354 Elim1Store]: treesize reduction 86, result has 19.6 percent of original size [2021-11-21 01:36:16,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 315 treesize of output 323 [2021-11-21 01:36:17,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:36:17,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:36:18,090 INFO L354 Elim1Store]: treesize reduction 92, result has 35.2 percent of original size [2021-11-21 01:36:18,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 307 treesize of output 327 [2021-11-21 01:36:18,127 INFO L354 Elim1Store]: treesize reduction 46, result has 43.2 percent of original size [2021-11-21 01:36:18,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 327 treesize of output 347 [2021-11-21 01:36:18,166 INFO L354 Elim1Store]: treesize reduction 46, result has 43.2 percent of original size [2021-11-21 01:36:18,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 376 treesize of output 396 [2021-11-21 01:36:18,559 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-21 01:36:18,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 110 [2021-11-21 01:36:18,578 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-11-21 01:36:18,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 130 [2021-11-21 01:36:18,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 121 treesize of output 94 [2021-11-21 01:36:19,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 [2021-11-21 01:36:19,169 INFO L354 Elim1Store]: treesize reduction 76, result has 27.6 percent of original size [2021-11-21 01:36:19,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 160 treesize of output 141 [2021-11-21 01:36:19,227 INFO L354 Elim1Store]: treesize reduction 68, result has 35.8 percent of original size [2021-11-21 01:36:19,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 127 treesize of output 135 [2021-11-21 01:36:19,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2021-11-21 01:36:19,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 1 [2021-11-21 01:36:19,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:36:19,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:19,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:19,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:19,814 INFO L354 Elim1Store]: treesize reduction 75, result has 27.9 percent of original size [2021-11-21 01:36:19,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 162 treesize of output 147 [2021-11-21 01:36:19,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:19,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:19,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:19,836 INFO L354 Elim1Store]: treesize reduction 75, result has 27.9 percent of original size [2021-11-21 01:36:19,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 168 treesize of output 147 [2021-11-21 01:36:19,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-11-21 01:36:20,009 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:36:21,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [347527073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:36:21,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:36:21,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [16, 5, 5] total 38 [2021-11-21 01:36:21,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924448916] [2021-11-21 01:36:21,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:36:21,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-21 01:36:21,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:36:21,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-21 01:36:21,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1244, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 01:36:21,975 INFO L87 Difference]: Start difference. First operand 165 states and 181 transitions. Second operand has 19 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:36:25,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:36:25,288 INFO L93 Difference]: Finished difference Result 242 states and 269 transitions. [2021-11-21 01:36:25,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-21 01:36:25,289 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-21 01:36:25,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:36:25,290 INFO L225 Difference]: With dead ends: 242 [2021-11-21 01:36:25,290 INFO L226 Difference]: Without dead ends: 242 [2021-11-21 01:36:25,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 67 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=426, Invalid=2766, Unknown=0, NotChecked=0, Total=3192 [2021-11-21 01:36:25,292 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 187 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:36:25,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 642 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 800 Invalid, 0 Unknown, 51 Unchecked, 0.8s Time] [2021-11-21 01:36:25,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-21 01:36:25,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 210. [2021-11-21 01:36:25,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 177 states have (on average 1.344632768361582) internal successors, (238), 209 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:36:25,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 238 transitions. [2021-11-21 01:36:25,298 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 238 transitions. Word has length 31 [2021-11-21 01:36:25,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:36:25,298 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 238 transitions. [2021-11-21 01:36:25,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:36:25,299 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 238 transitions. [2021-11-21 01:36:25,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-21 01:36:25,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:25,300 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:36:25,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:36:25,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-21 01:36:25,514 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:36:25,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:25,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1699599561, now seen corresponding path program 1 times [2021-11-21 01:36:25,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:36:25,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179031513] [2021-11-21 01:36:25,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:25,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:36:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:25,559 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:36:25,560 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:36:25,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179031513] [2021-11-21 01:36:25,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179031513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:36:25,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:36:25,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:36:25,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565835455] [2021-11-21 01:36:25,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:36:25,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:36:25,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:36:25,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:36:25,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:36:25,563 INFO L87 Difference]: Start difference. First operand 210 states and 238 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:36:25,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:36:25,619 INFO L93 Difference]: Finished difference Result 282 states and 315 transitions. [2021-11-21 01:36:25,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:36:25,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-21 01:36:25,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:36:25,622 INFO L225 Difference]: With dead ends: 282 [2021-11-21 01:36:25,622 INFO L226 Difference]: Without dead ends: 282 [2021-11-21 01:36:25,623 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:36:25,623 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 45 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:36:25,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 204 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:36:25,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-21 01:36:25,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 225. [2021-11-21 01:36:25,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 192 states have (on average 1.3229166666666667) internal successors, (254), 224 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:36:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 254 transitions. [2021-11-21 01:36:25,632 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 254 transitions. Word has length 32 [2021-11-21 01:36:25,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:36:25,632 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 254 transitions. [2021-11-21 01:36:25,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:36:25,633 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 254 transitions. [2021-11-21 01:36:25,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:36:25,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:25,633 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 01:36:25,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-21 01:36:25,634 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:36:25,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:25,635 INFO L85 PathProgramCache]: Analyzing trace with hash 682404996, now seen corresponding path program 1 times [2021-11-21 01:36:25,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:36:25,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33760813] [2021-11-21 01:36:25,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:25,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:36:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:25,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:36:25,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:36:25,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33760813] [2021-11-21 01:36:25,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33760813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:36:25,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:36:25,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:36:25,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973472328] [2021-11-21 01:36:25,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:36:25,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:36:25,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:36:25,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:36:25,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:36:25,681 INFO L87 Difference]: Start difference. First operand 225 states and 254 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:36:25,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:36:25,710 INFO L93 Difference]: Finished difference Result 226 states and 254 transitions. [2021-11-21 01:36:25,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:36:25,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-21 01:36:25,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:36:25,713 INFO L225 Difference]: With dead ends: 226 [2021-11-21 01:36:25,713 INFO L226 Difference]: Without dead ends: 226 [2021-11-21 01:36:25,713 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:36:25,715 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:36:25,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:36:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-11-21 01:36:25,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-11-21 01:36:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 193 states have (on average 1.3160621761658031) internal successors, (254), 225 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:36:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 254 transitions. [2021-11-21 01:36:25,723 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 254 transitions. Word has length 36 [2021-11-21 01:36:25,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:36:25,724 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 254 transitions. [2021-11-21 01:36:25,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:36:25,724 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 254 transitions. [2021-11-21 01:36:25,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-21 01:36:25,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:25,725 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 01:36:25,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-21 01:36:25,726 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:36:25,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:25,726 INFO L85 PathProgramCache]: Analyzing trace with hash -320171688, now seen corresponding path program 1 times [2021-11-21 01:36:25,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:36:25,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71514431] [2021-11-21 01:36:25,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:25,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:36:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:36:26,134 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:36:26,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71514431] [2021-11-21 01:36:26,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71514431] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:36:26,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241190840] [2021-11-21 01:36:26,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:26,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:36:26,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:36:26,136 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:36:26,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:36:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:26,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-21 01:36:26,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:36:26,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:36:26,250 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:36:26,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-21 01:36:26,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:36:26,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 01:36:26,363 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 01:36:26,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 44 [2021-11-21 01:36:26,373 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-21 01:36:26,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 50 treesize of output 45 [2021-11-21 01:36:26,489 INFO L354 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2021-11-21 01:36:26,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 77 [2021-11-21 01:36:26,506 INFO L354 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2021-11-21 01:36:26,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 68 treesize of output 66 [2021-11-21 01:36:26,586 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:36:26,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 76 [2021-11-21 01:36:26,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 84 treesize of output 76 [2021-11-21 01:36:26,592 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 01:36:26,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 76 treesize of output 55 [2021-11-21 01:36:26,898 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:36:26,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 42 [2021-11-21 01:36:26,901 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:36:26,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 21 [2021-11-21 01:36:26,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-11-21 01:36:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:36:26,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:36:27,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 85 [2021-11-21 01:36:34,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6675 treesize of output 6651 [2021-11-21 01:36:34,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 148485 treesize of output 147205 [2021-11-21 01:36:45,384 WARN L227 SmtUtils]: Spent 10.77s on a formula simplification. DAG size of input: 862 DAG size of output: 862 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:36:45,401 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 01:36:45,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [804084467] [2021-11-21 01:36:45,404 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2021-11-21 01:36:45,405 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:36:45,405 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:36:45,405 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:36:45,405 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:36:45,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:36:45,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-21 01:36:45,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-21 01:36:45,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-11-21 01:36:45,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:36:45,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:36:45,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:36:45,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:36:45,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:36:45,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-21 01:36:45,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:36:45,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-11-21 01:36:45,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:45,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-21 01:36:46,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:46,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 52 [2021-11-21 01:36:46,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:46,294 INFO L354 Elim1Store]: treesize reduction 78, result has 17.9 percent of original size [2021-11-21 01:36:46,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 211 treesize of output 164 [2021-11-21 01:36:46,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:46,342 INFO L354 Elim1Store]: treesize reduction 180, result has 11.8 percent of original size [2021-11-21 01:36:46,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 203 treesize of output 173 [2021-11-21 01:36:46,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:46,378 INFO L354 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2021-11-21 01:36:46,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 164 treesize of output 153 [2021-11-21 01:36:46,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:46,689 INFO L354 Elim1Store]: treesize reduction 134, result has 18.3 percent of original size [2021-11-21 01:36:46,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 145 treesize of output 125 [2021-11-21 01:36:46,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:46,726 INFO L354 Elim1Store]: treesize reduction 96, result has 20.0 percent of original size [2021-11-21 01:36:46,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 113 treesize of output 109 [2021-11-21 01:36:46,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:46,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:46,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:46,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-21 01:36:47,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:36:47,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,141 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-21 01:36:47,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 118 treesize of output 102 [2021-11-21 01:36:47,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,159 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-21 01:36:47,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 76 [2021-11-21 01:36:47,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:47,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2021-11-21 01:36:48,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:48,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:48,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:48,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:48,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2021-11-21 01:36:48,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:48,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:48,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 43 [2021-11-21 01:36:48,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:48,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:48,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:48,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 78 [2021-11-21 01:36:48,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:48,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:48,577 INFO L354 Elim1Store]: treesize reduction 150, result has 17.1 percent of original size [2021-11-21 01:36:48,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 254 treesize of output 213 [2021-11-21 01:36:48,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:48,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:48,636 INFO L354 Elim1Store]: treesize reduction 134, result has 18.8 percent of original size [2021-11-21 01:36:48,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 246 treesize of output 233 [2021-11-21 01:36:48,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:48,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:48,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:48,713 INFO L354 Elim1Store]: treesize reduction 244, result has 11.9 percent of original size [2021-11-21 01:36:48,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 238 treesize of output 211 [2021-11-21 01:36:49,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:49,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:49,283 INFO L354 Elim1Store]: treesize reduction 192, result has 16.5 percent of original size [2021-11-21 01:36:49,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 325 treesize of output 233 [2021-11-21 01:36:49,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:49,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:49,366 INFO L354 Elim1Store]: treesize reduction 224, result has 17.0 percent of original size [2021-11-21 01:36:49,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 new quantified variables, introduced 14 case distinctions, treesize of input 265 treesize of output 255 [2021-11-21 01:36:49,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:49,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:49,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:49,407 INFO L354 Elim1Store]: treesize reduction 86, result has 19.6 percent of original size [2021-11-21 01:36:49,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 261 treesize of output 258 [2021-11-21 01:36:49,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:49,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:49,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:49,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:36:49,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:49,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:49,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:49,807 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-21 01:36:49,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 118 treesize of output 102 [2021-11-21 01:36:49,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:49,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:49,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:49,837 INFO L354 Elim1Store]: treesize reduction 59, result has 18.1 percent of original size [2021-11-21 01:36:49,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 92 [2021-11-21 01:36:52,042 INFO L354 Elim1Store]: treesize reduction 96, result has 17.9 percent of original size [2021-11-21 01:36:52,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 321 treesize of output 326 [2021-11-21 01:36:52,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 [2021-11-21 01:36:52,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:36:52,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:36:52,860 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-21 01:36:52,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 91 [2021-11-21 01:36:52,881 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-11-21 01:36:52,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 103 [2021-11-21 01:36:52,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 87 treesize of output 60 [2021-11-21 01:36:53,492 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-11-21 01:36:53,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 108 [2021-11-21 01:36:53,521 INFO L354 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2021-11-21 01:36:53,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 104 [2021-11-21 01:36:53,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 [2021-11-21 01:36:53,702 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:36:56,624 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:36:56,624 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:36:56,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-21 01:36:56,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797048741] [2021-11-21 01:36:56,624 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-21 01:36:56,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:36:56,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:36:56,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:36:56,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=2362, Unknown=3, NotChecked=0, Total=2652 [2021-11-21 01:36:56,626 INFO L87 Difference]: Start difference. First operand 226 states and 254 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:36:57,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:36:57,662 INFO L93 Difference]: Finished difference Result 273 states and 303 transitions. [2021-11-21 01:36:57,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-21 01:36:57,663 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-21 01:36:57,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:36:57,664 INFO L225 Difference]: With dead ends: 273 [2021-11-21 01:36:57,664 INFO L226 Difference]: Without dead ends: 273 [2021-11-21 01:36:57,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=468, Invalid=3951, Unknown=3, NotChecked=0, Total=4422 [2021-11-21 01:36:57,667 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 317 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:36:57,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 650 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:36:57,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-11-21 01:36:57,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 225. [2021-11-21 01:36:57,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 192 states have (on average 1.3125) internal successors, (252), 224 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:36:57,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 252 transitions. [2021-11-21 01:36:57,673 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 252 transitions. Word has length 37 [2021-11-21 01:36:57,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:36:57,673 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 252 transitions. [2021-11-21 01:36:57,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:36:57,674 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 252 transitions. [2021-11-21 01:36:57,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-21 01:36:57,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:57,674 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:36:57,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:36:57,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:36:57,890 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:36:57,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:57,891 INFO L85 PathProgramCache]: Analyzing trace with hash 880105047, now seen corresponding path program 1 times [2021-11-21 01:36:57,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:36:57,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534580270] [2021-11-21 01:36:57,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:57,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:36:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:57,921 ERROR L253 erpolLogProxyWrapper]: Interpolant 9 not inductive [2021-11-21 01:36:57,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-21 01:36:57,931 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:232) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:343) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:343) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:198) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:296) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:232) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-21 01:36:57,936 INFO L158 Benchmark]: Toolchain (without parser) took 100567.95ms. Allocated memory was 113.2MB in the beginning and 436.2MB in the end (delta: 323.0MB). Free memory was 68.7MB in the beginning and 283.2MB in the end (delta: -214.5MB). Peak memory consumption was 107.6MB. Max. memory is 16.1GB. [2021-11-21 01:36:57,936 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 113.2MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:36:57,936 INFO L158 Benchmark]: CACSL2BoogieTranslator took 505.77ms. Allocated memory is still 113.2MB. Free memory was 68.5MB in the beginning and 77.9MB in the end (delta: -9.5MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2021-11-21 01:36:57,936 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.93ms. Allocated memory is still 113.2MB. Free memory was 77.9MB in the beginning and 75.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:36:57,937 INFO L158 Benchmark]: Boogie Preprocessor took 79.33ms. Allocated memory is still 113.2MB. Free memory was 75.8MB in the beginning and 73.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:36:57,937 INFO L158 Benchmark]: RCFGBuilder took 754.32ms. Allocated memory is still 113.2MB. Free memory was 73.7MB in the beginning and 48.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-21 01:36:57,937 INFO L158 Benchmark]: TraceAbstraction took 99139.29ms. Allocated memory was 113.2MB in the beginning and 436.2MB in the end (delta: 323.0MB). Free memory was 47.7MB in the beginning and 283.2MB in the end (delta: -235.4MB). Peak memory consumption was 90.6MB. Max. memory is 16.1GB. [2021-11-21 01:36:57,938 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 113.2MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 505.77ms. Allocated memory is still 113.2MB. Free memory was 68.5MB in the beginning and 77.9MB in the end (delta: -9.5MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.93ms. Allocated memory is still 113.2MB. Free memory was 77.9MB in the beginning and 75.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.33ms. Allocated memory is still 113.2MB. Free memory was 75.8MB in the beginning and 73.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 754.32ms. Allocated memory is still 113.2MB. Free memory was 73.7MB in the beginning and 48.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 99139.29ms. Allocated memory was 113.2MB in the beginning and 436.2MB in the end (delta: 323.0MB). Free memory was 47.7MB in the beginning and 283.2MB in the end (delta: -235.4MB). Peak memory consumption was 90.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:232) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-21 01:36:57,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-queue-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 338b6951ab628b0237aa41c64d1786e44f90130a76a8fd0978f750b3fe39d026 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:37:00,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:37:00,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:37:00,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:37:00,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:37:00,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:37:00,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:37:00,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:37:00,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:37:00,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:37:00,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:37:00,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:37:00,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:37:00,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:37:00,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:37:00,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:37:00,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:37:00,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:37:00,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:37:00,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:37:00,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:37:00,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:37:00,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:37:00,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:37:00,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:37:00,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:37:00,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:37:00,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:37:00,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:37:00,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:37:00,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:37:00,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:37:00,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:37:00,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:37:00,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:37:00,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:37:00,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:37:00,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:37:00,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:37:00,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:37:00,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:37:00,387 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2021-11-21 01:37:00,433 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:37:00,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:37:00,434 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:37:00,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:37:00,435 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:37:00,435 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:37:00,435 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:37:00,436 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:37:00,437 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:37:00,437 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:37:00,438 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:37:00,438 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:37:00,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:37:00,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:37:00,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:37:00,440 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:37:00,440 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:37:00,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:37:00,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:37:00,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:37:00,441 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:37:00,442 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:37:00,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:37:00,442 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:37:00,442 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:37:00,442 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:37:00,443 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:37:00,443 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:37:00,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:37:00,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:37:00,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:37:00,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:37:00,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:37:00,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:37:00,445 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:37:00,445 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:37:00,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:37:00,446 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:37:00,446 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 338b6951ab628b0237aa41c64d1786e44f90130a76a8fd0978f750b3fe39d026 [2021-11-21 01:37:00,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:37:00,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:37:00,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:37:00,925 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:37:00,926 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:37:00,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/forester-heap/dll-queue-2.i [2021-11-21 01:37:00,996 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/data/b277b7bdc/3040e817048b4ed5aecf521dff40cffd/FLAG4550b5634 [2021-11-21 01:37:01,619 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:37:01,620 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i [2021-11-21 01:37:01,660 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/data/b277b7bdc/3040e817048b4ed5aecf521dff40cffd/FLAG4550b5634 [2021-11-21 01:37:01,909 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/data/b277b7bdc/3040e817048b4ed5aecf521dff40cffd [2021-11-21 01:37:01,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:37:01,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:37:01,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:37:01,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:37:01,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:37:01,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:37:01" (1/1) ... [2021-11-21 01:37:01,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73aff559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:01, skipping insertion in model container [2021-11-21 01:37:01,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:37:01" (1/1) ... [2021-11-21 01:37:01,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:37:02,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:37:02,513 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22460,22473] [2021-11-21 01:37:02,521 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22531,22544] [2021-11-21 01:37:02,523 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22605,22618] [2021-11-21 01:37:02,525 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22697,22710] [2021-11-21 01:37:02,527 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22774,22787] [2021-11-21 01:37:02,529 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22869,22882] [2021-11-21 01:37:02,535 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22946,22959] [2021-11-21 01:37:02,537 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23029,23042] [2021-11-21 01:37:02,539 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23124,23137] [2021-11-21 01:37:02,544 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23201,23214] [2021-11-21 01:37:02,546 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23284,23297] [2021-11-21 01:37:02,548 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23373,23386] [2021-11-21 01:37:02,549 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23459,23472] [2021-11-21 01:37:02,552 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23604,23617] [2021-11-21 01:37:02,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:37:02,581 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:37:02,612 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22460,22473] [2021-11-21 01:37:02,613 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22531,22544] [2021-11-21 01:37:02,614 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22605,22618] [2021-11-21 01:37:02,615 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22697,22710] [2021-11-21 01:37:02,616 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22774,22787] [2021-11-21 01:37:02,617 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22869,22882] [2021-11-21 01:37:02,618 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[22946,22959] [2021-11-21 01:37:02,619 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23029,23042] [2021-11-21 01:37:02,621 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23124,23137] [2021-11-21 01:37:02,622 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23201,23214] [2021-11-21 01:37:02,623 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23284,23297] [2021-11-21 01:37:02,624 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23373,23386] [2021-11-21 01:37:02,625 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23459,23472] [2021-11-21 01:37:02,627 WARN L230 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_2ed9bead-cd33-49b3-8db6-a96955e60fa1/sv-benchmarks/c/forester-heap/dll-queue-2.i[23604,23617] [2021-11-21 01:37:02,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:37:02,663 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:37:02,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:02 WrapperNode [2021-11-21 01:37:02,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:37:02,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:37:02,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:37:02,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:37:02,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:02" (1/1) ... [2021-11-21 01:37:02,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:02" (1/1) ... [2021-11-21 01:37:02,727 INFO L137 Inliner]: procedures = 122, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 220 [2021-11-21 01:37:02,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:37:02,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:37:02,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:37:02,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:37:02,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:02" (1/1) ... [2021-11-21 01:37:02,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:02" (1/1) ... [2021-11-21 01:37:02,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:02" (1/1) ... [2021-11-21 01:37:02,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:02" (1/1) ... [2021-11-21 01:37:02,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:02" (1/1) ... [2021-11-21 01:37:02,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:02" (1/1) ... [2021-11-21 01:37:02,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:02" (1/1) ... [2021-11-21 01:37:02,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:37:02,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:37:02,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:37:02,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:37:02,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:02" (1/1) ... [2021-11-21 01:37:02,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:37:02,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:37:02,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:37:02,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:37:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 01:37:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:37:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:37:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:37:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:37:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:37:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 01:37:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:37:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:37:02,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:37:03,055 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:37:03,056 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:37:03,814 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:37:03,821 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:37:03,821 INFO L301 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-21 01:37:03,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:37:03 BoogieIcfgContainer [2021-11-21 01:37:03,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:37:03,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:37:03,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:37:03,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:37:03,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:37:01" (1/3) ... [2021-11-21 01:37:03,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dac8a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:37:03, skipping insertion in model container [2021-11-21 01:37:03,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:02" (2/3) ... [2021-11-21 01:37:03,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dac8a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:37:03, skipping insertion in model container [2021-11-21 01:37:03,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:37:03" (3/3) ... [2021-11-21 01:37:03,833 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-queue-2.i [2021-11-21 01:37:03,838 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:37:03,839 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2021-11-21 01:37:03,885 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:37:03,895 INFO L339 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:37:03,895 INFO L340 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2021-11-21 01:37:03,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 101 states have (on average 2.297029702970297) internal successors, (232), 177 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:03,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 01:37:03,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:03,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 01:37:03,932 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:37:03,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:03,937 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-21 01:37:03,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:03,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259488982] [2021-11-21 01:37:03,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:03,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:03,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:03,949 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:03,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:37:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:04,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:37:04,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:04,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:37:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:04,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:04,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:04,141 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:04,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259488982] [2021-11-21 01:37:04,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259488982] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:04,143 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:04,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:37:04,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819866136] [2021-11-21 01:37:04,145 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:04,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:37:04,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:04,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:37:04,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:37:04,177 INFO L87 Difference]: Start difference. First operand has 178 states, 101 states have (on average 2.297029702970297) internal successors, (232), 177 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:04,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:04,572 INFO L93 Difference]: Finished difference Result 175 states and 184 transitions. [2021-11-21 01:37:04,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:37:04,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-21 01:37:04,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:04,583 INFO L225 Difference]: With dead ends: 175 [2021-11-21 01:37:04,584 INFO L226 Difference]: Without dead ends: 171 [2021-11-21 01:37:04,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:37:04,587 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 165 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:04,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 108 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:37:04,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-21 01:37:04,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2021-11-21 01:37:04,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 102 states have (on average 1.7450980392156863) internal successors, (178), 166 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:04,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 178 transitions. [2021-11-21 01:37:04,641 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 178 transitions. Word has length 3 [2021-11-21 01:37:04,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:04,641 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 178 transitions. [2021-11-21 01:37:04,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:04,642 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 178 transitions. [2021-11-21 01:37:04,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 01:37:04,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:04,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 01:37:04,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:04,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:04,854 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:37:04,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:04,855 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-21 01:37:04,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:04,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729974220] [2021-11-21 01:37:04,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:04,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:04,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:04,858 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:04,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:37:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:04,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:37:04,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:04,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:37:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:04,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:05,009 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:05,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729974220] [2021-11-21 01:37:05,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729974220] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:05,010 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:05,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 01:37:05,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552047250] [2021-11-21 01:37:05,012 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:05,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:37:05,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:05,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:37:05,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:37:05,014 INFO L87 Difference]: Start difference. First operand 167 states and 178 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:05,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:05,359 INFO L93 Difference]: Finished difference Result 160 states and 169 transitions. [2021-11-21 01:37:05,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:37:05,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-21 01:37:05,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:05,362 INFO L225 Difference]: With dead ends: 160 [2021-11-21 01:37:05,362 INFO L226 Difference]: Without dead ends: 160 [2021-11-21 01:37:05,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:37:05,364 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 151 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:05,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 119 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:37:05,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-21 01:37:05,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2021-11-21 01:37:05,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 102 states have (on average 1.6274509803921569) internal successors, (166), 155 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:05,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2021-11-21 01:37:05,395 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 3 [2021-11-21 01:37:05,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:05,395 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2021-11-21 01:37:05,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:05,399 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2021-11-21 01:37:05,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:37:05,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:05,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:05,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:05,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:05,617 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:37:05,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:05,618 INFO L85 PathProgramCache]: Analyzing trace with hash 59261803, now seen corresponding path program 1 times [2021-11-21 01:37:05,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:05,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116688947] [2021-11-21 01:37:05,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:05,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:05,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:05,621 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:05,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:37:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:05,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:37:05,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:05,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:37:05,773 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 01:37:05,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 21 [2021-11-21 01:37:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:05,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:05,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:05,857 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:05,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116688947] [2021-11-21 01:37:05,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116688947] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:05,858 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:05,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:37:05,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317532899] [2021-11-21 01:37:05,859 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:05,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:37:05,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:05,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:37:05,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:37:05,860 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:06,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:06,216 INFO L93 Difference]: Finished difference Result 165 states and 174 transitions. [2021-11-21 01:37:06,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:37:06,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 01:37:06,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:06,218 INFO L225 Difference]: With dead ends: 165 [2021-11-21 01:37:06,218 INFO L226 Difference]: Without dead ends: 165 [2021-11-21 01:37:06,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:37:06,220 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 268 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:06,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 110 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:37:06,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-21 01:37:06,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2021-11-21 01:37:06,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 109 states have (on average 1.5688073394495412) internal successors, (171), 156 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:06,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 171 transitions. [2021-11-21 01:37:06,233 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 171 transitions. Word has length 8 [2021-11-21 01:37:06,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:06,233 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 171 transitions. [2021-11-21 01:37:06,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:06,234 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 171 transitions. [2021-11-21 01:37:06,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:37:06,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:06,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:06,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:06,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:06,446 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:37:06,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:06,447 INFO L85 PathProgramCache]: Analyzing trace with hash 59261804, now seen corresponding path program 1 times [2021-11-21 01:37:06,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:06,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125099648] [2021-11-21 01:37:06,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:06,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:06,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:06,448 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:06,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 01:37:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:06,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:37:06,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:06,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:37:06,611 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:37:06,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-11-21 01:37:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:06,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:06,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:06,976 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:06,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125099648] [2021-11-21 01:37:06,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125099648] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:06,977 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:06,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2021-11-21 01:37:06,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549684335] [2021-11-21 01:37:06,977 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:06,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:37:06,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:06,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:37:06,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:37:06,979 INFO L87 Difference]: Start difference. First operand 157 states and 171 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:07,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:07,629 INFO L93 Difference]: Finished difference Result 275 states and 297 transitions. [2021-11-21 01:37:07,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:37:07,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 01:37:07,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:07,634 INFO L225 Difference]: With dead ends: 275 [2021-11-21 01:37:07,634 INFO L226 Difference]: Without dead ends: 275 [2021-11-21 01:37:07,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:37:07,642 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 592 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:07,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 281 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 145 Invalid, 0 Unknown, 115 Unchecked, 0.6s Time] [2021-11-21 01:37:07,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-21 01:37:07,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 157. [2021-11-21 01:37:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 111 states have (on average 1.5495495495495495) internal successors, (172), 156 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:07,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 172 transitions. [2021-11-21 01:37:07,669 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 172 transitions. Word has length 8 [2021-11-21 01:37:07,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:07,670 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 172 transitions. [2021-11-21 01:37:07,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:07,671 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 172 transitions. [2021-11-21 01:37:07,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 01:37:07,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:07,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:07,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:07,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:07,884 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:37:07,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:07,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1837116747, now seen corresponding path program 1 times [2021-11-21 01:37:07,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:07,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150000807] [2021-11-21 01:37:07,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:07,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:07,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:07,887 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:07,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:37:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:07,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:37:07,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:07,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:07,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:07,998 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:07,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150000807] [2021-11-21 01:37:07,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150000807] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:07,999 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:07,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:37:07,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584695731] [2021-11-21 01:37:07,999 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:08,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:37:08,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:08,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:37:08,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:37:08,002 INFO L87 Difference]: Start difference. First operand 157 states and 172 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:08,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:08,089 INFO L93 Difference]: Finished difference Result 147 states and 161 transitions. [2021-11-21 01:37:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:37:08,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-21 01:37:08,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:08,094 INFO L225 Difference]: With dead ends: 147 [2021-11-21 01:37:08,094 INFO L226 Difference]: Without dead ends: 147 [2021-11-21 01:37:08,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:37:08,095 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 126 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:08,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 135 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:37:08,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-21 01:37:08,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-11-21 01:37:08,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 106 states have (on average 1.5188679245283019) internal successors, (161), 146 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:08,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 161 transitions. [2021-11-21 01:37:08,115 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 161 transitions. Word has length 9 [2021-11-21 01:37:08,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:08,115 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 161 transitions. [2021-11-21 01:37:08,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:08,116 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 161 transitions. [2021-11-21 01:37:08,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:37:08,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:08,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:08,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:08,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:08,317 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:37:08,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:08,318 INFO L85 PathProgramCache]: Analyzing trace with hash 236809587, now seen corresponding path program 1 times [2021-11-21 01:37:08,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:08,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481052558] [2021-11-21 01:37:08,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:08,319 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:08,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:08,320 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:08,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-21 01:37:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:08,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:37:08,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:08,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:37:08,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 16 [2021-11-21 01:37:08,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-21 01:37:08,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:08,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:08,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:08,503 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:08,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481052558] [2021-11-21 01:37:08,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481052558] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:08,504 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:08,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:37:08,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136587801] [2021-11-21 01:37:08,505 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:08,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:37:08,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:08,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:37:08,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:37:08,506 INFO L87 Difference]: Start difference. First operand 147 states and 161 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:08,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:08,928 INFO L93 Difference]: Finished difference Result 146 states and 160 transitions. [2021-11-21 01:37:08,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:37:08,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 01:37:08,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:08,930 INFO L225 Difference]: With dead ends: 146 [2021-11-21 01:37:08,930 INFO L226 Difference]: Without dead ends: 146 [2021-11-21 01:37:08,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:37:08,931 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 7 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:08,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 405 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:37:08,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-21 01:37:08,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-11-21 01:37:08,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 106 states have (on average 1.509433962264151) internal successors, (160), 145 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:08,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 160 transitions. [2021-11-21 01:37:08,948 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 160 transitions. Word has length 11 [2021-11-21 01:37:08,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:08,948 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 160 transitions. [2021-11-21 01:37:08,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:08,948 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 160 transitions. [2021-11-21 01:37:08,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:37:08,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:08,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:08,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-21 01:37:09,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:09,170 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:37:09,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:09,171 INFO L85 PathProgramCache]: Analyzing trace with hash 236809588, now seen corresponding path program 1 times [2021-11-21 01:37:09,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:09,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999985902] [2021-11-21 01:37:09,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:09,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:09,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:09,172 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:09,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-21 01:37:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:09,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:37:09,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:09,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:37:09,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:37:09,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 13 [2021-11-21 01:37:09,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-11-21 01:37:09,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-21 01:37:09,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:09,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:09,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:09,571 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:09,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999985902] [2021-11-21 01:37:09,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999985902] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:09,572 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:09,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-21 01:37:09,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115828654] [2021-11-21 01:37:09,572 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:09,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:37:09,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:09,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:37:09,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:37:09,573 INFO L87 Difference]: Start difference. First operand 146 states and 160 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:10,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:10,372 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2021-11-21 01:37:10,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:37:10,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 01:37:10,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:10,374 INFO L225 Difference]: With dead ends: 145 [2021-11-21 01:37:10,374 INFO L226 Difference]: Without dead ends: 145 [2021-11-21 01:37:10,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:37:10,376 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 8 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:10,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 405 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:37:10,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-21 01:37:10,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-11-21 01:37:10,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 106 states have (on average 1.5) internal successors, (159), 144 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:10,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 159 transitions. [2021-11-21 01:37:10,382 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 159 transitions. Word has length 11 [2021-11-21 01:37:10,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:10,383 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 159 transitions. [2021-11-21 01:37:10,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:10,383 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 159 transitions. [2021-11-21 01:37:10,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:37:10,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:10,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:10,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-21 01:37:10,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:10,596 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:37:10,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:10,597 INFO L85 PathProgramCache]: Analyzing trace with hash 845693984, now seen corresponding path program 1 times [2021-11-21 01:37:10,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:10,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742745294] [2021-11-21 01:37:10,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:10,597 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:10,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:10,598 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:10,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 01:37:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:10,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:37:10,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:10,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:10,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:10,750 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:10,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742745294] [2021-11-21 01:37:10,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742745294] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:10,751 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:10,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 01:37:10,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582606003] [2021-11-21 01:37:10,751 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:10,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:37:10,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:10,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:37:10,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:37:10,754 INFO L87 Difference]: Start difference. First operand 145 states and 159 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:10,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:10,805 INFO L93 Difference]: Finished difference Result 265 states and 295 transitions. [2021-11-21 01:37:10,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:37:10,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-21 01:37:10,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:10,808 INFO L225 Difference]: With dead ends: 265 [2021-11-21 01:37:10,808 INFO L226 Difference]: Without dead ends: 265 [2021-11-21 01:37:10,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:37:10,809 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 165 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:10,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 351 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:37:10,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-21 01:37:10,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 176. [2021-11-21 01:37:10,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.4452554744525548) internal successors, (198), 175 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:10,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 198 transitions. [2021-11-21 01:37:10,817 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 198 transitions. Word has length 15 [2021-11-21 01:37:10,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:10,817 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 198 transitions. [2021-11-21 01:37:10,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:10,818 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 198 transitions. [2021-11-21 01:37:10,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:37:10,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:10,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:10,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:11,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:11,034 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:37:11,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:11,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1108053835, now seen corresponding path program 1 times [2021-11-21 01:37:11,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:11,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438060480] [2021-11-21 01:37:11,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:11,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:11,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:11,037 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:11,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-21 01:37:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:11,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:37:11,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:11,162 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-21 01:37:11,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 24 [2021-11-21 01:37:11,466 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-21 01:37:11,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 41 treesize of output 58 [2021-11-21 01:37:11,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 58 treesize of output 54 [2021-11-21 01:37:12,631 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 01:37:12,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 66 [2021-11-21 01:37:13,233 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-21 01:37:13,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 71 [2021-11-21 01:37:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:13,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:15,259 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem4#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem4#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|)) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))))))) (_ bv1 1)))) is different from false [2021-11-21 01:37:16,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:16,768 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:16,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438060480] [2021-11-21 01:37:16,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438060480] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:16,768 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:16,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 15 [2021-11-21 01:37:16,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745456209] [2021-11-21 01:37:16,768 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:16,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:37:16,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:16,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:37:16,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=167, Unknown=1, NotChecked=26, Total=240 [2021-11-21 01:37:16,770 INFO L87 Difference]: Start difference. First operand 176 states and 198 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:17,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:17,505 INFO L93 Difference]: Finished difference Result 294 states and 317 transitions. [2021-11-21 01:37:17,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-21 01:37:17,506 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-21 01:37:17,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:17,508 INFO L225 Difference]: With dead ends: 294 [2021-11-21 01:37:17,508 INFO L226 Difference]: Without dead ends: 294 [2021-11-21 01:37:17,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=78, Invalid=305, Unknown=1, NotChecked=36, Total=420 [2021-11-21 01:37:17,509 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 190 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 476 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:17,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 878 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 295 Invalid, 0 Unknown, 476 Unchecked, 0.5s Time] [2021-11-21 01:37:17,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-21 01:37:17,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 175. [2021-11-21 01:37:17,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 137 states have (on average 1.4233576642335766) internal successors, (195), 174 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:17,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 195 transitions. [2021-11-21 01:37:17,516 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 195 transitions. Word has length 15 [2021-11-21 01:37:17,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:17,516 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 195 transitions. [2021-11-21 01:37:17,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:17,517 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 195 transitions. [2021-11-21 01:37:17,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:37:17,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:17,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:17,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:17,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:17,718 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:37:17,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:17,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1108053834, now seen corresponding path program 1 times [2021-11-21 01:37:17,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:17,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90670142] [2021-11-21 01:37:17,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:17,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:17,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:17,720 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:17,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-21 01:37:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:17,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-21 01:37:17,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:17,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:37:17,861 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:37:17,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-21 01:37:17,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:37:17,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:37:17,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 17 [2021-11-21 01:37:18,026 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 01:37:18,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-11-21 01:37:18,046 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-21 01:37:18,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 59 treesize of output 54 [2021-11-21 01:37:18,141 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-21 01:37:18,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 42 [2021-11-21 01:37:18,147 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-21 01:37:18,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 19 [2021-11-21 01:37:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:18,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:20,456 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem4#1.offset| (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem4#1.offset|) |c_ULTIMATE.start_main_~item~0#1.offset|)) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((|ULTIMATE.start_main_#t~mem4#1.offset| (_ BitVec 32))) (let ((.cse1 (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem4#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base|) .cse1 |c_ULTIMATE.start_main_~item~0#1.offset|)) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base|) .cse1 |c_ULTIMATE.start_main_~item~0#1.base|)) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|)))))) is different from false [2021-11-21 01:37:32,660 WARN L227 SmtUtils]: Spent 9.40s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:37:32,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:32,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:32,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:32,925 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:32,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90670142] [2021-11-21 01:37:32,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90670142] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:32,925 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:32,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-11-21 01:37:32,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807122299] [2021-11-21 01:37:32,925 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:32,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:37:32,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:32,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:37:32,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=172, Unknown=1, NotChecked=26, Total=240 [2021-11-21 01:37:32,927 INFO L87 Difference]: Start difference. First operand 175 states and 195 transitions. Second operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:35,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:35,610 INFO L93 Difference]: Finished difference Result 186 states and 201 transitions. [2021-11-21 01:37:35,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-21 01:37:35,610 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-21 01:37:35,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:35,612 INFO L225 Difference]: With dead ends: 186 [2021-11-21 01:37:35,612 INFO L226 Difference]: Without dead ends: 186 [2021-11-21 01:37:35,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=172, Invalid=643, Unknown=1, NotChecked=54, Total=870 [2021-11-21 01:37:35,613 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 415 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 245 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:35,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 622 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 442 Invalid, 0 Unknown, 245 Unchecked, 1.8s Time] [2021-11-21 01:37:35,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-21 01:37:35,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 170. [2021-11-21 01:37:35,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 137 states have (on average 1.364963503649635) internal successors, (187), 169 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:35,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2021-11-21 01:37:35,619 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 15 [2021-11-21 01:37:35,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:35,619 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2021-11-21 01:37:35,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:35,620 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2021-11-21 01:37:35,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 01:37:35,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:35,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:35,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:35,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:35,830 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr65REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:37:35,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:35,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1512275769, now seen corresponding path program 1 times [2021-11-21 01:37:35,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:35,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832899375] [2021-11-21 01:37:35,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:35,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:35,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:35,832 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:35,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 01:37:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:35,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:37:35,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:35,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:35,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:35,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:35,978 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:35,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832899375] [2021-11-21 01:37:35,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832899375] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:35,979 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:35,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:37:35,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117599766] [2021-11-21 01:37:35,979 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:35,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:37:35,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:35,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:37:35,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:37:35,980 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:36,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:36,047 INFO L93 Difference]: Finished difference Result 201 states and 220 transitions. [2021-11-21 01:37:36,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:37:36,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-21 01:37:36,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:36,049 INFO L225 Difference]: With dead ends: 201 [2021-11-21 01:37:36,049 INFO L226 Difference]: Without dead ends: 201 [2021-11-21 01:37:36,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:37:36,050 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 34 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:36,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 373 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:37:36,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-21 01:37:36,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 179. [2021-11-21 01:37:36,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 146 states have (on average 1.356164383561644) internal successors, (198), 178 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:36,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 198 transitions. [2021-11-21 01:37:36,057 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 198 transitions. Word has length 18 [2021-11-21 01:37:36,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:36,057 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 198 transitions. [2021-11-21 01:37:36,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:36,057 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 198 transitions. [2021-11-21 01:37:36,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 01:37:36,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:36,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:36,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:36,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:36,282 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr72ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:37:36,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:36,283 INFO L85 PathProgramCache]: Analyzing trace with hash -364710660, now seen corresponding path program 1 times [2021-11-21 01:37:36,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:36,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196084917] [2021-11-21 01:37:36,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:36,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:36,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:36,285 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:36,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-21 01:37:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:36,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:37:36,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:36,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:36,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:36,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:36,504 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:36,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196084917] [2021-11-21 01:37:36,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196084917] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:36,505 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:36,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:37:36,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293451551] [2021-11-21 01:37:36,505 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:36,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:37:36,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:36,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:37:36,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:37:36,506 INFO L87 Difference]: Start difference. First operand 179 states and 198 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:36,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:36,780 INFO L93 Difference]: Finished difference Result 179 states and 197 transitions. [2021-11-21 01:37:36,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:37:36,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-21 01:37:36,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:36,782 INFO L225 Difference]: With dead ends: 179 [2021-11-21 01:37:36,782 INFO L226 Difference]: Without dead ends: 179 [2021-11-21 01:37:36,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:37:36,783 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 143 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:36,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 210 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:37:36,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-21 01:37:36,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-11-21 01:37:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 146 states have (on average 1.3493150684931507) internal successors, (197), 178 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:36,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 197 transitions. [2021-11-21 01:37:36,792 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 197 transitions. Word has length 19 [2021-11-21 01:37:36,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:36,794 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 197 transitions. [2021-11-21 01:37:36,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:36,794 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 197 transitions. [2021-11-21 01:37:36,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 01:37:36,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:36,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:36,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:37,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:37,010 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:37:37,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:37,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1578871877, now seen corresponding path program 1 times [2021-11-21 01:37:37,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:37,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985746573] [2021-11-21 01:37:37,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:37,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:37,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:37,013 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:37,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-21 01:37:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:37,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:37:37,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:37,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:37,388 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:37,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985746573] [2021-11-21 01:37:37,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985746573] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:37,389 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:37,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-21 01:37:37,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193912127] [2021-11-21 01:37:37,389 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:37,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:37:37,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:37,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:37:37,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:37:37,390 INFO L87 Difference]: Start difference. First operand 179 states and 197 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:37,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:37,872 INFO L93 Difference]: Finished difference Result 183 states and 200 transitions. [2021-11-21 01:37:37,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:37:37,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-21 01:37:37,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:37,874 INFO L225 Difference]: With dead ends: 183 [2021-11-21 01:37:37,875 INFO L226 Difference]: Without dead ends: 183 [2021-11-21 01:37:37,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:37:37,875 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 191 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:37,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 206 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:37:37,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-21 01:37:37,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2021-11-21 01:37:37,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 146 states have (on average 1.3424657534246576) internal successors, (196), 178 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:37,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 196 transitions. [2021-11-21 01:37:37,883 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 196 transitions. Word has length 20 [2021-11-21 01:37:37,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:37,884 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 196 transitions. [2021-11-21 01:37:37,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:37,885 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 196 transitions. [2021-11-21 01:37:37,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 01:37:37,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:37,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:37,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:38,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:38,088 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr68REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:37:38,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:38,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1598030539, now seen corresponding path program 1 times [2021-11-21 01:37:38,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:38,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708767568] [2021-11-21 01:37:38,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:38,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:38,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:38,090 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:38,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-21 01:37:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:38,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:37:38,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:38,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:37:38,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:37:38,231 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-21 01:37:38,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-21 01:37:38,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:38,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-21 01:37:38,341 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-11-21 01:37:38,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 23 [2021-11-21 01:37:38,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:38,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:38,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:38,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:37:38,550 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-21 01:37:38,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2021-11-21 01:37:38,557 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-21 01:37:38,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2021-11-21 01:37:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:38,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:38,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:38,790 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:38,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708767568] [2021-11-21 01:37:38,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708767568] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:38,791 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:38,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 6 [2021-11-21 01:37:38,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435135804] [2021-11-21 01:37:38,791 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:38,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:37:38,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:38,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:37:38,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:37:38,792 INFO L87 Difference]: Start difference. First operand 179 states and 196 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:39,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:39,220 INFO L93 Difference]: Finished difference Result 176 states and 190 transitions. [2021-11-21 01:37:39,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:37:39,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-21 01:37:39,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:39,223 INFO L225 Difference]: With dead ends: 176 [2021-11-21 01:37:39,223 INFO L226 Difference]: Without dead ends: 176 [2021-11-21 01:37:39,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:37:39,224 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 10 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:39,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 452 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:37:39,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-21 01:37:39,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 173. [2021-11-21 01:37:39,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 140 states have (on average 1.3357142857142856) internal successors, (187), 172 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:39,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 187 transitions. [2021-11-21 01:37:39,229 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 187 transitions. Word has length 20 [2021-11-21 01:37:39,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:39,230 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 187 transitions. [2021-11-21 01:37:39,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:39,230 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 187 transitions. [2021-11-21 01:37:39,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 01:37:39,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:39,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:39,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:39,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:39,432 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:37:39,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:39,432 INFO L85 PathProgramCache]: Analyzing trace with hash -279759618, now seen corresponding path program 1 times [2021-11-21 01:37:39,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:39,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569301205] [2021-11-21 01:37:39,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:39,433 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:39,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:39,434 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:39,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-21 01:37:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:39,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:37:39,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:39,580 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 01:37:39,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 22 [2021-11-21 01:37:39,760 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-21 01:37:39,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 38 treesize of output 49 [2021-11-21 01:37:40,022 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-11-21 01:37:40,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 32 [2021-11-21 01:37:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:40,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:40,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:40,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:40,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569301205] [2021-11-21 01:37:40,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569301205] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:40,157 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:40,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 4 [2021-11-21 01:37:40,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43090551] [2021-11-21 01:37:40,158 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:40,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:37:40,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:40,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:37:40,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:37:40,159 INFO L87 Difference]: Start difference. First operand 173 states and 187 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:40,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:40,383 INFO L93 Difference]: Finished difference Result 256 states and 274 transitions. [2021-11-21 01:37:40,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:37:40,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-21 01:37:40,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:40,387 INFO L225 Difference]: With dead ends: 256 [2021-11-21 01:37:40,387 INFO L226 Difference]: Without dead ends: 256 [2021-11-21 01:37:40,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:37:40,388 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 87 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:40,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 424 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 53 Unchecked, 0.2s Time] [2021-11-21 01:37:40,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-21 01:37:40,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 178. [2021-11-21 01:37:40,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 145 states have (on average 1.3241379310344827) internal successors, (192), 177 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:40,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 192 transitions. [2021-11-21 01:37:40,393 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 192 transitions. Word has length 22 [2021-11-21 01:37:40,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:40,393 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 192 transitions. [2021-11-21 01:37:40,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:40,394 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 192 transitions. [2021-11-21 01:37:40,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-21 01:37:40,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:40,394 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:40,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:40,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:37:40,604 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:37:40,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1985676737, now seen corresponding path program 1 times [2021-11-21 01:37:40,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:40,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250203258] [2021-11-21 01:37:40,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:40,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:40,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:40,606 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:40,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-21 01:37:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:40,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:37:40,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:40,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:37:40,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:37:40,741 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-21 01:37:40,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-21 01:37:40,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:40,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-21 01:37:40,848 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-11-21 01:37:40,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 23 [2021-11-21 01:37:40,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:40,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:40,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:40,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:37:41,132 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-21 01:37:41,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2021-11-21 01:37:41,139 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-21 01:37:41,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2021-11-21 01:37:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:41,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:41,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:41,410 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:41,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250203258] [2021-11-21 01:37:41,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250203258] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:41,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [556340480] [2021-11-21 01:37:41,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:41,410 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:37:41,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:37:41,416 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:37:41,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-21 01:37:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:41,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 01:37:41,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:41,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:37:41,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:37:41,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:41,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-21 01:37:41,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:41,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-21 01:37:41,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:41,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:41,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:41,723 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:37:41,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:37:41,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:41,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:41,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:41,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:37:42,045 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:37:42,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31 [2021-11-21 01:37:42,050 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:37:42,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 01:37:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:42,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:42,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [556340480] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:42,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557447426] [2021-11-21 01:37:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:42,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:42,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:37:42,291 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:37:42,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-21 01:37:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:42,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-21 01:37:42,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:42,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:37:42,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:37:42,414 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-21 01:37:42,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-21 01:37:42,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:42,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2021-11-21 01:37:42,491 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-11-21 01:37:42,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 36 treesize of output 23 [2021-11-21 01:37:42,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:42,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:42,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:42,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-21 01:37:42,857 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-21 01:37:42,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2021-11-21 01:37:42,866 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-21 01:37:42,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2021-11-21 01:37:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:42,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:43,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557447426] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:43,093 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:37:43,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7, 5, 7, 5] total 10 [2021-11-21 01:37:43,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837481488] [2021-11-21 01:37:43,094 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:37:43,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:37:43,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:43,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:37:43,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:37:43,095 INFO L87 Difference]: Start difference. First operand 178 states and 192 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:43,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:43,665 INFO L93 Difference]: Finished difference Result 185 states and 199 transitions. [2021-11-21 01:37:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:37:43,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-21 01:37:43,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:43,667 INFO L225 Difference]: With dead ends: 185 [2021-11-21 01:37:43,668 INFO L226 Difference]: Without dead ends: 185 [2021-11-21 01:37:43,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 118 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:37:43,669 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 142 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:43,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 637 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:37:43,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-21 01:37:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-11-21 01:37:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 152 states have (on average 1.3092105263157894) internal successors, (199), 184 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 199 transitions. [2021-11-21 01:37:43,674 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 199 transitions. Word has length 23 [2021-11-21 01:37:43,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:43,675 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 199 transitions. [2021-11-21 01:37:43,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:43,675 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 199 transitions. [2021-11-21 01:37:43,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-21 01:37:43,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:43,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:43,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:43,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:44,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:44,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:44,288 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:37:44,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:44,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1426435580, now seen corresponding path program 1 times [2021-11-21 01:37:44,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:44,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713504131] [2021-11-21 01:37:44,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:44,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:44,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:44,290 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:44,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-21 01:37:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:44,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:37:44,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:44,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:44,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:44,710 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:37:44,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713504131] [2021-11-21 01:37:44,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713504131] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:44,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1488544968] [2021-11-21 01:37:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:44,710 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:37:44,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:37:44,711 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:37:44,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-21 01:37:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:44,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:37:44,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:45,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:45,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1488544968] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:45,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329088023] [2021-11-21 01:37:45,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:45,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:45,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:37:45,308 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:37:45,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-21 01:37:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:45,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:37:45,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:45,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:45,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329088023] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:45,636 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:37:45,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 11 [2021-11-21 01:37:45,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230435115] [2021-11-21 01:37:45,637 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:37:45,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:37:45,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:37:45,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:37:45,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:37:45,638 INFO L87 Difference]: Start difference. First operand 185 states and 199 transitions. Second operand has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:46,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:46,280 INFO L93 Difference]: Finished difference Result 187 states and 200 transitions. [2021-11-21 01:37:46,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:37:46,280 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-21 01:37:46,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:46,282 INFO L225 Difference]: With dead ends: 187 [2021-11-21 01:37:46,282 INFO L226 Difference]: Without dead ends: 170 [2021-11-21 01:37:46,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:37:46,283 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 162 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:46,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 587 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 263 Invalid, 0 Unknown, 50 Unchecked, 0.5s Time] [2021-11-21 01:37:46,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-21 01:37:46,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-11-21 01:37:46,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 137 states have (on average 1.3357664233576643) internal successors, (183), 169 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:46,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 183 transitions. [2021-11-21 01:37:46,288 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 183 transitions. Word has length 24 [2021-11-21 01:37:46,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:46,288 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 183 transitions. [2021-11-21 01:37:46,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:46,289 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 183 transitions. [2021-11-21 01:37:46,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-21 01:37:46,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:46,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:46,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:46,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:46,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:46,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:46,892 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:37:46,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:46,893 INFO L85 PathProgramCache]: Analyzing trace with hash -815352664, now seen corresponding path program 1 times [2021-11-21 01:37:46,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:37:46,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126155557] [2021-11-21 01:37:46,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:46,893 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:37:46,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:37:46,894 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:37:46,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-21 01:37:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:46,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-21 01:37:46,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:46,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:37:47,060 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:37:47,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-21 01:37:47,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 16 [2021-11-21 01:37:47,239 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 01:37:47,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 28 [2021-11-21 01:37:48,687 INFO L354 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2021-11-21 01:37:48,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 47 [2021-11-21 01:37:48,805 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-21 01:37:48,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 44 [2021-11-21 01:37:49,022 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 01:37:49,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 18 [2021-11-21 01:37:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:49,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:51,305 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~item~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |ULTIMATE.start_main_~item~0#1.offset| (_ bv0 32)) (bvadd (_ bv8 32) |ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_9)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-21 01:37:53,314 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~item~0#1.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base|) |ULTIMATE.start_main_~item~0#1.offset| (_ bv0 32)) (bvadd (_ bv8 32) |ULTIMATE.start_main_~item~0#1.offset|) v_DerPreprocessor_9)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-21 01:37:55,325 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.offset_86| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (not (= (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store |c_#memory_$Pointer$.base| .cse0 (store (store (select |c_#memory_$Pointer$.base| .cse0) |v_ULTIMATE.start_main_~item~0#1.offset_86| (_ bv0 32)) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~item~0#1.offset_86|) v_DerPreprocessor_9))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-21 01:37:57,356 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem4#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~item~0#1.offset_86| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (not (= (_ bv0 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem4#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store .cse0 .cse1 (store (store (select .cse0 .cse1) |v_ULTIMATE.start_main_~item~0#1.offset_86| (_ bv0 32)) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~item~0#1.offset_86|) v_DerPreprocessor_9)))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2021-11-21 01:37:59,385 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem4#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~item~0#1.offset_86| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (not (= (select (select (let ((.cse0 (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem4#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store .cse0 .cse1 (store (store (select .cse0 .cse1) |v_ULTIMATE.start_main_~item~0#1.offset_86| (_ bv0 32)) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~item~0#1.offset_86|) v_DerPreprocessor_9)))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-21 01:37:59,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23628 treesize of output 23500 [2021-11-21 01:38:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:38:02,551 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:38:02,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126155557] [2021-11-21 01:38:02,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126155557] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:38:02,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1326046888] [2021-11-21 01:38:02,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:02,552 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:38:02,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:38:02,554 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:38:02,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-21 01:38:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:02,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-21 01:38:02,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:02,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:38:02,945 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:38:02,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-21 01:38:03,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 16 [2021-11-21 01:38:03,263 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 01:38:03,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 28 [2021-11-21 01:38:07,489 INFO L354 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2021-11-21 01:38:07,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 47 [2021-11-21 01:38:07,645 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-21 01:38:07,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 44 [2021-11-21 01:38:07,965 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 01:38:07,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 18 [2021-11-21 01:38:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:38:07,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:38:10,708 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.offset_90| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (not (= (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store |c_#memory_$Pointer$.base| .cse0 (store (store (select |c_#memory_$Pointer$.base| .cse0) |v_ULTIMATE.start_main_~item~0#1.offset_90| (_ bv0 32)) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~item~0#1.offset_90|) v_DerPreprocessor_9))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-21 01:38:12,734 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.offset_90| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem4#1.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem4#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store .cse0 .cse1 (store (store (select .cse0 .cse1) |v_ULTIMATE.start_main_~item~0#1.offset_90| (_ bv0 32)) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~item~0#1.offset_90|) v_DerPreprocessor_9)))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-21 01:38:14,757 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~item~0#1.offset_90| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem4#1.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (not (= (select (select (let ((.cse0 (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem4#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store .cse0 .cse1 (store (store (select .cse0 .cse1) |v_ULTIMATE.start_main_~item~0#1.offset_90| (_ bv0 32)) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~item~0#1.offset_90|) v_DerPreprocessor_9)))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-21 01:38:14,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11588 treesize of output 11524 [2021-11-21 01:38:16,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:38:16,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1326046888] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:38:16,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828262144] [2021-11-21 01:38:16,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:16,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:16,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:16,003 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:38:16,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-21 01:38:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:16,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-21 01:38:16,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:16,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:38:16,135 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:38:16,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-11-21 01:38:16,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 01:38:16,445 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 01:38:16,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-11-21 01:38:16,827 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-21 01:38:16,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 26 [2021-11-21 01:38:17,691 INFO L354 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2021-11-21 01:38:17,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 43 [2021-11-21 01:38:17,829 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-21 01:38:17,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:38:17,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:17,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:38:18,160 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-21 01:38:18,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 49 [2021-11-21 01:38:18,165 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 01:38:18,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 23 [2021-11-21 01:38:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:38:18,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:38:19,333 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:38:19,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 335 treesize of output 270 [2021-11-21 01:39:00,154 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_102 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem4#1.offset| (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32))) (let ((.cse0 (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store |c_#memory_$Pointer$.base| .cse4 (store (select |c_#memory_$Pointer$.base| .cse4) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem4#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|))))) (let ((.cse2 (bvadd v_arrayElimCell_102 (_ bv8 32))) (.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (or (not (= (select (select (store .cse0 .cse1 (store (store (select .cse0 .cse1) v_arrayElimCell_102 (_ bv0 32)) .cse2 v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32))) (let ((.cse3 (not (= |c_ULTIMATE.start_main_~head~0#1.base| .cse1)))) (and (or (not (= v_arrayElimCell_102 |c_ULTIMATE.start_main_~head~0#1.offset|)) .cse3) (or (not (= .cse2 |c_ULTIMATE.start_main_~head~0#1.offset|)) .cse3) (= |c_ULTIMATE.start_main_~head~0#1.base| |c_ULTIMATE.start_main_~item~0#1.base|) (= |c_ULTIMATE.start_main_~item~0#1.offset| |c_ULTIMATE.start_main_~head~0#1.offset|))) (and (= (_ bv0 32) .cse1) (= v_arrayElimCell_102 (_ bv0 32))))))) is different from false [2021-11-21 01:39:00,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4410 treesize of output 4362 [2021-11-21 01:39:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:39:06,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828262144] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:39:06,201 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:39:06,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13, 14] total 53 [2021-11-21 01:39:06,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305834788] [2021-11-21 01:39:06,202 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:39:06,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-21 01:39:06,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:39:06,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-21 01:39:06,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1657, Unknown=20, NotChecked=828, Total=2756 [2021-11-21 01:39:06,208 INFO L87 Difference]: Start difference. First operand 170 states and 183 transitions. Second operand has 53 states, 53 states have (on average 2.660377358490566) internal successors, (141), 53 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:39:23,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:23,763 INFO L93 Difference]: Finished difference Result 266 states and 286 transitions. [2021-11-21 01:39:23,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-21 01:39:23,773 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.660377358490566) internal successors, (141), 53 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-21 01:39:23,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:23,775 INFO L225 Difference]: With dead ends: 266 [2021-11-21 01:39:23,775 INFO L226 Difference]: Without dead ends: 266 [2021-11-21 01:39:23,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 125 SyntacticMatches, 10 SemanticMatches, 60 ConstructedPredicates, 9 IntricatePredicates, 1 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 78.8s TimeCoverageRelationStatistics Valid=375, Invalid=2397, Unknown=20, NotChecked=990, Total=3782 [2021-11-21 01:39:23,778 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 573 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 2191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1729 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:23,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 1904 Invalid, 2191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 450 Invalid, 0 Unknown, 1729 Unchecked, 1.1s Time] [2021-11-21 01:39:23,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-21 01:39:23,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 179. [2021-11-21 01:39:23,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 146 states have (on average 1.3287671232876712) internal successors, (194), 178 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:39:23,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 194 transitions. [2021-11-21 01:39:23,785 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 194 transitions. Word has length 31 [2021-11-21 01:39:23,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:39:23,786 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 194 transitions. [2021-11-21 01:39:23,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.660377358490566) internal successors, (141), 53 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:39:23,786 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 194 transitions. [2021-11-21 01:39:23,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-21 01:39:23,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:23,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:39:23,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-21 01:39:24,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-21 01:39:24,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-11-21 01:39:24,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:39:24,401 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:39:24,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:24,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1649213984, now seen corresponding path program 1 times [2021-11-21 01:39:24,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:39:24,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747911318] [2021-11-21 01:39:24,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:24,402 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:39:24,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:39:24,403 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:39:24,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-21 01:39:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:24,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:39:24,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:39:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:39:24,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:39:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:39:24,638 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:39:24,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747911318] [2021-11-21 01:39:24,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747911318] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:39:24,638 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:39:24,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:39:24,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985559791] [2021-11-21 01:39:24,639 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:39:24,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:39:24,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:39:24,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:39:24,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:39:24,640 INFO L87 Difference]: Start difference. First operand 179 states and 194 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:39:24,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:24,679 INFO L93 Difference]: Finished difference Result 223 states and 236 transitions. [2021-11-21 01:39:24,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:39:24,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-21 01:39:24,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:24,681 INFO L225 Difference]: With dead ends: 223 [2021-11-21 01:39:24,681 INFO L226 Difference]: Without dead ends: 223 [2021-11-21 01:39:24,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:39:24,682 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 57 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:24,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 253 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:39:24,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-21 01:39:24,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 181. [2021-11-21 01:39:24,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 148 states have (on average 1.2972972972972974) internal successors, (192), 180 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:39:24,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2021-11-21 01:39:24,692 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 32 [2021-11-21 01:39:24,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:39:24,693 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2021-11-21 01:39:24,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:39:24,694 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2021-11-21 01:39:24,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-21 01:39:24,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:24,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:39:24,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-21 01:39:24,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:39:24,910 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr65REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-21 01:39:24,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:24,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1932608206, now seen corresponding path program 1 times [2021-11-21 01:39:24,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:39:24,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356739700] [2021-11-21 01:39:24,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:24,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:39:24,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:39:24,911 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:39:24,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed9bead-cd33-49b3-8db6-a96955e60fa1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-21 01:39:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:25,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-21 01:39:25,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:39:25,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:39:25,127 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-21 01:39:25,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-21 01:39:25,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 20 [2021-11-21 01:39:25,373 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 01:39:25,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 32 [2021-11-21 01:39:27,182 INFO L354 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2021-11-21 01:39:27,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 52 [2021-11-21 01:39:27,357 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-21 01:39:27,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 50 [2021-11-21 01:39:27,831 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 01:39:27,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 45 [2021-11-21 01:39:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:39:28,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:39:49,524 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 (_ BitVec 32)) (|v_ULTIMATE.start_main_~item~0#1.offset_98| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store |c_#memory_$Pointer$.base| .cse0 (store (store (select |c_#memory_$Pointer$.base| .cse0) |v_ULTIMATE.start_main_~item~0#1.offset_98| (_ bv0 32)) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~item~0#1.offset_98|) v_DerPreprocessor_13))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))))) (_ bv1 1)))) is different from false [2021-11-21 01:39:51,553 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem4#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~item~0#1.offset_98| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem4#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store .cse0 .cse1 (store (store (select .cse0 .cse1) |v_ULTIMATE.start_main_~item~0#1.offset_98| (_ bv0 32)) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~item~0#1.offset_98|) v_DerPreprocessor_13)))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))))) (_ bv1 1)))) is different from false [2021-11-21 01:39:53,577 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem4#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~item~0#1.offset_98| (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) (bvadd (_ bv4 32) |ULTIMATE.start_main_#t~mem4#1.offset|) |c_ULTIMATE.start_main_~item~0#1.base|))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store .cse0 .cse1 (store (store (select .cse0 .cse1) |v_ULTIMATE.start_main_~item~0#1.offset_98| (_ bv0 32)) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~item~0#1.offset_98|) v_DerPreprocessor_13)))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))))))) is different from false [2021-11-21 01:39:53,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45599 treesize of output 45343