./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1f258bb699a014f11eb0babe874a45670072f33ce1154e31a2f0110b34e4ef74 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:09:39,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:09:39,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:09:39,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:09:39,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:09:39,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:09:39,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:09:39,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:09:39,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:09:39,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:09:39,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:09:39,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:09:39,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:09:39,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:09:39,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:09:39,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:09:39,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:09:39,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:09:39,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:09:39,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:09:39,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:09:39,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:09:39,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:09:39,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:09:39,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:09:39,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:09:39,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:09:39,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:09:39,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:09:39,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:09:39,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:09:39,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:09:39,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:09:39,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:09:39,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:09:39,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:09:39,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:09:39,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:09:39,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:09:39,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:09:39,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:09:39,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:09:39,534 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:09:39,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:09:39,536 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:09:39,536 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:09:39,540 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:09:39,542 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:09:39,542 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:09:39,543 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:09:39,543 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:09:39,543 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:09:39,544 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:09:39,545 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:09:39,545 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:09:39,545 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:09:39,546 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:09:39,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:09:39,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:09:39,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:09:39,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:09:39,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:09:39,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:09:39,548 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:09:39,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:09:39,549 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:09:39,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:09:39,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:09:39,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:09:39,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:09:39,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:09:39,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:09:39,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:09:39,554 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:09:39,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:09:39,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:09:39,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:09:39,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:09:39,555 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_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f258bb699a014f11eb0babe874a45670072f33ce1154e31a2f0110b34e4ef74 [2021-11-07 02:09:39,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:09:39,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:09:39,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:09:39,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:09:39,982 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:09:39,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 02:09:40,087 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/data/90aaa6613/cf8c66fa36db41608507bbf4cb791806/FLAGcd0c94127 [2021-11-07 02:09:41,107 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:09:41,108 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 02:09:41,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/data/90aaa6613/cf8c66fa36db41608507bbf4cb791806/FLAGcd0c94127 [2021-11-07 02:09:41,548 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/data/90aaa6613/cf8c66fa36db41608507bbf4cb791806 [2021-11-07 02:09:41,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:09:41,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:09:41,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:09:41,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:09:41,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:09:41,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:41" (1/1) ... [2021-11-07 02:09:41,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9730e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:41, skipping insertion in model container [2021-11-07 02:09:41,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:41" (1/1) ... [2021-11-07 02:09:41,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:09:41,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:09:43,465 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:43,475 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:43,619 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:43,629 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:43,652 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:43,661 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:43,811 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:43,880 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:43,916 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:43,935 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:43,944 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:43,949 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:43,956 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:43,973 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:44,000 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:44,008 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:44,014 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:44,020 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:44,025 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:44,057 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:44,065 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:44,084 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:44,084 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:44,085 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:44,085 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:44,109 WARN L228 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_1804415e-f27d-4b4a-949c-2d99738e6eef/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[239447,239460] [2021-11-07 02:09:44,126 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 02:09:44,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:09:44,199 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:09:44,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4edc600c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:44, skipping insertion in model container [2021-11-07 02:09:44,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:09:44,200 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:09:44,203 INFO L168 Benchmark]: Toolchain (without parser) took 2649.17 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 68.0 MB in the beginning and 71.6 MB in the end (delta: -3.7 MB). Peak memory consumption was 42.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:44,204 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 92.3 MB. Free memory is still 71.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:09:44,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2645.91 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 68.0 MB in the beginning and 71.6 MB in the end (delta: -3.7 MB). Peak memory consumption was 42.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:09:44,207 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 92.3 MB. Free memory is still 71.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2645.91 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 68.0 MB in the beginning and 71.6 MB in the end (delta: -3.7 MB). Peak memory consumption was 42.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4476]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1f258bb699a014f11eb0babe874a45670072f33ce1154e31a2f0110b34e4ef74 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:09:47,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:09:47,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:09:47,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:09:47,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:09:47,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:09:47,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:09:47,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:09:47,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:09:47,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:09:47,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:09:47,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:09:47,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:09:47,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:09:47,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:09:47,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:09:47,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:09:47,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:09:47,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:09:47,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:09:47,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:09:47,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:09:47,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:09:47,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:09:47,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:09:47,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:09:47,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:09:47,189 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:09:47,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:09:47,191 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:09:47,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:09:47,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:09:47,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:09:47,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:09:47,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:09:47,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:09:47,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:09:47,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:09:47,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:09:47,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:09:47,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:09:47,235 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:09:47,303 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:09:47,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:09:47,305 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:09:47,306 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:09:47,306 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:09:47,306 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:09:47,307 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:09:47,307 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:09:47,308 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:09:47,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:09:47,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:09:47,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:09:47,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:09:47,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:09:47,313 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:09:47,313 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:09:47,314 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:09:47,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:09:47,314 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:09:47,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:09:47,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:09:47,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:09:47,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:09:47,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:09:47,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:09:47,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:09:47,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:09:47,317 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:09:47,318 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:09:47,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:09:47,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:09:47,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:09:47,319 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_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f258bb699a014f11eb0babe874a45670072f33ce1154e31a2f0110b34e4ef74 [2021-11-07 02:09:47,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:09:47,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:09:47,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:09:47,846 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:09:47,847 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:09:47,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 02:09:47,942 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/data/c8a83a0c1/8c3b223efa7f403cbed1084e9b3a053b/FLAGb58f45736 [2021-11-07 02:09:49,044 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:09:49,045 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 02:09:49,096 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/data/c8a83a0c1/8c3b223efa7f403cbed1084e9b3a053b/FLAGb58f45736 [2021-11-07 02:09:49,407 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/data/c8a83a0c1/8c3b223efa7f403cbed1084e9b3a053b [2021-11-07 02:09:49,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:09:49,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:09:49,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:09:49,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:09:49,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:09:49,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:49" (1/1) ... [2021-11-07 02:09:49,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c3ffde2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:49, skipping insertion in model container [2021-11-07 02:09:49,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:49" (1/1) ... [2021-11-07 02:09:49,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:09:49,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:09:52,164 WARN L228 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_1804415e-f27d-4b4a-949c-2d99738e6eef/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[239447,239460] [2021-11-07 02:09:52,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:09:52,281 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:09:52,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:09:52,871 WARN L228 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_1804415e-f27d-4b4a-949c-2d99738e6eef/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[239447,239460] [2021-11-07 02:09:52,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:09:52,928 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:09:53,433 WARN L228 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_1804415e-f27d-4b4a-949c-2d99738e6eef/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i[239447,239460] [2021-11-07 02:09:53,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:09:53,654 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:09:53,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:53 WrapperNode [2021-11-07 02:09:53,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:09:53,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:09:53,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:09:53,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:09:53,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:53" (1/1) ... [2021-11-07 02:09:53,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:53" (1/1) ... [2021-11-07 02:09:56,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:09:56,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:09:56,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:09:56,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:09:56,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:53" (1/1) ... [2021-11-07 02:09:56,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:53" (1/1) ... [2021-11-07 02:09:56,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:53" (1/1) ... [2021-11-07 02:09:56,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:53" (1/1) ... [2021-11-07 02:09:58,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:53" (1/1) ... [2021-11-07 02:09:58,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:53" (1/1) ... [2021-11-07 02:09:59,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:53" (1/1) ... [2021-11-07 02:09:59,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:09:59,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:09:59,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:09:59,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:09:59,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:53" (1/1) ... [2021-11-07 02:09:59,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:09:59,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:09:59,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:09:59,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:09:59,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:09:59,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:09:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:09:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 02:09:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 02:09:59,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 02:09:59,580 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_usb_bulk_msg [2021-11-07 02:09:59,580 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_usb_bulk_msg [2021-11-07 02:09:59,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-07 02:09:59,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-07 02:09:59,580 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_signal_sdio_irq [2021-11-07 02:09:59,581 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_signal_sdio_irq [2021-11-07 02:09:59,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2021-11-07 02:09:59,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2021-11-07 02:09:59,581 INFO L130 BoogieDeclarations]: Found specification of procedure __command_read_data [2021-11-07 02:09:59,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_read_data [2021-11-07 02:09:59,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:09:59,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_27 [2021-11-07 02:09:59,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_27 [2021-11-07 02:09:59,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:09:59,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2021-11-07 02:09:59,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2021-11-07 02:09:59,583 INFO L130 BoogieDeclarations]: Found specification of procedure irqpoll_out_completed [2021-11-07 02:09:59,583 INFO L138 BoogieDeclarations]: Found implementation of procedure irqpoll_out_completed [2021-11-07 02:09:59,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2021-11-07 02:09:59,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2021-11-07 02:09:59,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:09:59,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:09:59,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 02:09:59,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:09:59,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:09:59,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:09:59,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 02:09:59,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:09:59,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:09:59,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 02:09:59,586 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_enable_sdio_irq [2021-11-07 02:09:59,587 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_enable_sdio_irq [2021-11-07 02:09:59,587 INFO L130 BoogieDeclarations]: Found specification of procedure command_out_completed [2021-11-07 02:09:59,587 INFO L138 BoogieDeclarations]: Found implementation of procedure command_out_completed [2021-11-07 02:09:59,588 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_cmndwork_thread [2021-11-07 02:09:59,588 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_cmndwork_thread [2021-11-07 02:09:59,588 INFO L130 BoogieDeclarations]: Found specification of procedure send_command [2021-11-07 02:09:59,588 INFO L138 BoogieDeclarations]: Found implementation of procedure send_command [2021-11-07 02:09:59,588 INFO L130 BoogieDeclarations]: Found specification of procedure send_irqpoll [2021-11-07 02:09:59,589 INFO L138 BoogieDeclarations]: Found implementation of procedure send_irqpoll [2021-11-07 02:09:59,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 02:09:59,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 02:09:59,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 02:09:59,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 02:09:59,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_32 [2021-11-07 02:09:59,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_32 [2021-11-07 02:09:59,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:09:59,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:09:59,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 02:09:59,593 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-07 02:09:59,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-07 02:09:59,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 02:09:59,594 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:09:59,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 02:09:59,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 02:09:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_pollwork_thread [2021-11-07 02:09:59,595 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_pollwork_thread [2021-11-07 02:09:59,596 INFO L130 BoogieDeclarations]: Found specification of procedure __do_poll [2021-11-07 02:09:59,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __do_poll [2021-11-07 02:09:59,596 INFO L130 BoogieDeclarations]: Found specification of procedure __command_write_data [2021-11-07 02:09:59,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_write_data [2021-11-07 02:09:59,597 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-07 02:09:59,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 02:09:59,598 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 02:09:59,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:09:59,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:14:11,950 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:14:11,951 INFO L299 CfgBuilder]: Removed 14764 assume(true) statements. [2021-11-07 02:14:11,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:14:11 BoogieIcfgContainer [2021-11-07 02:14:11,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:14:11,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:14:11,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:14:11,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:14:11,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:09:49" (1/3) ... [2021-11-07 02:14:11,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d47569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:14:11, skipping insertion in model container [2021-11-07 02:14:11,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:53" (2/3) ... [2021-11-07 02:14:11,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d47569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:14:11, skipping insertion in model container [2021-11-07 02:14:11,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:14:11" (3/3) ... [2021-11-07 02:14:11,978 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-063f96c-1-144_1a-drivers--mmc--host--vub300.ko.unsigned-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 02:14:11,986 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:14:11,987 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 02:14:12,162 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:14:12,169 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:14:12,169 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 02:14:12,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 11120 states, 11055 states have (on average 1.4388964269561284) internal successors, (15907), 11066 states have internal predecessors, (15907), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-07 02:14:12,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 02:14:12,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:12,400 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:12,401 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:14:12,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:12,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1037244845, now seen corresponding path program 1 times [2021-11-07 02:14:12,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:12,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616276196] [2021-11-07 02:14:12,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:12,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:12,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:12,458 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:12,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:14:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:14,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:14:14,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:15,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:15,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:15,578 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:15,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616276196] [2021-11-07 02:14:15,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616276196] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:15,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:14:15,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:14:15,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238356066] [2021-11-07 02:14:15,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:14:15,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:15,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:14:15,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:14:15,643 INFO L87 Difference]: Start difference. First operand has 11120 states, 11055 states have (on average 1.4388964269561284) internal successors, (15907), 11066 states have internal predecessors, (15907), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 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) [2021-11-07 02:14:16,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:16,550 INFO L93 Difference]: Finished difference Result 22236 states and 32001 transitions. [2021-11-07 02:14:16,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:14:16,560 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 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 47 [2021-11-07 02:14:16,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:16,680 INFO L225 Difference]: With dead ends: 22236 [2021-11-07 02:14:16,681 INFO L226 Difference]: Without dead ends: 11103 [2021-11-07 02:14:16,721 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:14:16,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11103 states. [2021-11-07 02:14:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11103 to 11103. [2021-11-07 02:14:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11103 states, 11039 states have (on average 1.4358184618171936) internal successors, (15850), 11049 states have internal predecessors, (15850), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-07 02:14:17,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11103 states to 11103 states and 15930 transitions. [2021-11-07 02:14:17,271 INFO L78 Accepts]: Start accepts. Automaton has 11103 states and 15930 transitions. Word has length 47 [2021-11-07 02:14:17,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:17,272 INFO L470 AbstractCegarLoop]: Abstraction has 11103 states and 15930 transitions. [2021-11-07 02:14:17,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 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) [2021-11-07 02:14:17,273 INFO L276 IsEmpty]: Start isEmpty. Operand 11103 states and 15930 transitions. [2021-11-07 02:14:17,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 02:14:17,278 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:17,279 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:17,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 02:14:17,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:14:17,498 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:14:17,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:17,500 INFO L85 PathProgramCache]: Analyzing trace with hash 111286925, now seen corresponding path program 1 times [2021-11-07 02:14:17,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:17,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878007542] [2021-11-07 02:14:17,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:17,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:17,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:17,505 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:17,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:14:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:19,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:14:19,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:19,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:14:20,532 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:20,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878007542] [2021-11-07 02:14:20,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878007542] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:20,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:14:20,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:14:20,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533667605] [2021-11-07 02:14:20,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:14:20,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:20,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:14:20,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:14:20,538 INFO L87 Difference]: Start difference. First operand 11103 states and 15930 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2021-11-07 02:14:21,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:21,274 INFO L93 Difference]: Finished difference Result 22190 states and 31847 transitions. [2021-11-07 02:14:21,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:14:21,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 47 [2021-11-07 02:14:21,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:21,366 INFO L225 Difference]: With dead ends: 22190 [2021-11-07 02:14:21,366 INFO L226 Difference]: Without dead ends: 11107 [2021-11-07 02:14:21,397 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:14:21,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11107 states. [2021-11-07 02:14:21,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11107 to 11107. [2021-11-07 02:14:21,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11107 states, 11043 states have (on average 1.4356605994747804) internal successors, (15854), 11053 states have internal predecessors, (15854), 40 states have call successors, (40), 20 states have call predecessors, (40), 20 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-07 02:14:22,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11107 states to 11107 states and 15934 transitions. [2021-11-07 02:14:22,053 INFO L78 Accepts]: Start accepts. Automaton has 11107 states and 15934 transitions. Word has length 47 [2021-11-07 02:14:22,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:22,054 INFO L470 AbstractCegarLoop]: Abstraction has 11107 states and 15934 transitions. [2021-11-07 02:14:22,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2021-11-07 02:14:22,054 INFO L276 IsEmpty]: Start isEmpty. Operand 11107 states and 15934 transitions. [2021-11-07 02:14:22,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 02:14:22,060 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:22,061 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:22,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:22,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:14:22,283 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:14:22,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:22,284 INFO L85 PathProgramCache]: Analyzing trace with hash -714878387, now seen corresponding path program 1 times [2021-11-07 02:14:22,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:22,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653072168] [2021-11-07 02:14:22,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:22,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:22,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:22,296 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:22,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:14:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:24,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:14:24,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:14:25,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:14:26,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:26,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653072168] [2021-11-07 02:14:26,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653072168] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:14:26,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1714490926] [2021-11-07 02:14:26,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:26,535 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:14:26,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:14:26,555 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:14:26,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 02:14:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:28,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:14:28,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:14:29,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:14:30,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1714490926] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:14:30,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:14:30,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:14:30,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088248591] [2021-11-07 02:14:30,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:14:30,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:14:30,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:14:30,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:14:30,627 INFO L87 Difference]: Start difference. First operand 11107 states and 15934 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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) [2021-11-07 02:14:52,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:14:52,573 INFO L93 Difference]: Finished difference Result 33246 states and 47797 transitions. [2021-11-07 02:14:52,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:14:52,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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 51 [2021-11-07 02:14:52,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:14:52,696 INFO L225 Difference]: With dead ends: 33246 [2021-11-07 02:14:52,696 INFO L226 Difference]: Without dead ends: 22171 [2021-11-07 02:14:52,735 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:14:52,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22171 states. [2021-11-07 02:14:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22171 to 22171. [2021-11-07 02:14:53,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22171 states, 22047 states have (on average 1.406359141833356) internal successors, (31006), 22064 states have internal predecessors, (31006), 80 states have call successors, (80), 40 states have call predecessors, (80), 40 states have return successors, (112), 74 states have call predecessors, (112), 80 states have call successors, (112) [2021-11-07 02:14:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22171 states to 22171 states and 31198 transitions. [2021-11-07 02:14:53,819 INFO L78 Accepts]: Start accepts. Automaton has 22171 states and 31198 transitions. Word has length 51 [2021-11-07 02:14:53,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:14:53,822 INFO L470 AbstractCegarLoop]: Abstraction has 22171 states and 31198 transitions. [2021-11-07 02:14:53,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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) [2021-11-07 02:14:53,822 INFO L276 IsEmpty]: Start isEmpty. Operand 22171 states and 31198 transitions. [2021-11-07 02:14:53,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 02:14:53,829 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:14:53,831 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:14:53,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:54,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:14:54,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:14:54,258 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:14:54,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:14:54,258 INFO L85 PathProgramCache]: Analyzing trace with hash -686346112, now seen corresponding path program 1 times [2021-11-07 02:14:54,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:14:54,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304277886] [2021-11-07 02:14:54,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:54,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:14:54,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:14:54,265 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:14:54,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:14:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:56,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:14:56,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:14:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:14:57,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:14:58,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:14:58,053 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:14:58,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304277886] [2021-11-07 02:14:58,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304277886] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:14:58,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1591126736] [2021-11-07 02:14:58,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:14:58,054 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:14:58,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:14:58,062 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:14:58,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 02:14:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:14:59,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:14:59,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:00,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:15:00,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:01,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:15:01,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1591126736] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:15:01,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:15:01,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:15:01,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878617693] [2021-11-07 02:15:01,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:15:01,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:15:01,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:15:01,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:15:01,919 INFO L87 Difference]: Start difference. First operand 22171 states and 31198 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 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) [2021-11-07 02:15:12,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:15:12,848 INFO L93 Difference]: Finished difference Result 66131 states and 93210 transitions. [2021-11-07 02:15:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:15:12,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 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 52 [2021-11-07 02:15:12,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:15:13,042 INFO L225 Difference]: With dead ends: 66131 [2021-11-07 02:15:13,042 INFO L226 Difference]: Without dead ends: 43992 [2021-11-07 02:15:13,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:15:13,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43992 states. [2021-11-07 02:15:14,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43992 to 43974. [2021-11-07 02:15:14,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43974 states, 43730 states have (on average 1.392133546764235) internal successors, (60878), 43761 states have internal predecessors, (60878), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (224), 148 states have call predecessors, (224), 160 states have call successors, (224) [2021-11-07 02:15:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43974 states to 43974 states and 61262 transitions. [2021-11-07 02:15:15,260 INFO L78 Accepts]: Start accepts. Automaton has 43974 states and 61262 transitions. Word has length 52 [2021-11-07 02:15:15,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:15:15,262 INFO L470 AbstractCegarLoop]: Abstraction has 43974 states and 61262 transitions. [2021-11-07 02:15:15,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 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) [2021-11-07 02:15:15,262 INFO L276 IsEmpty]: Start isEmpty. Operand 43974 states and 61262 transitions. [2021-11-07 02:15:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 02:15:15,266 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:15:15,267 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:15:15,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:15:15,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:15:15,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:15:15,676 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:15:15,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:15:15,677 INFO L85 PathProgramCache]: Analyzing trace with hash 198154423, now seen corresponding path program 1 times [2021-11-07 02:15:15,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:15:15,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235102652] [2021-11-07 02:15:15,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:15,684 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:15:15,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:15:15,685 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:15:15,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:15:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:17,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:15:17,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:18,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:15:18,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:15:19,073 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:15:19,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235102652] [2021-11-07 02:15:19,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235102652] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:15:19,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1698042193] [2021-11-07 02:15:19,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:19,074 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:15:19,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:15:19,076 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:15:19,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 02:15:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:20,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:15:20,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:21,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:15:21,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:15:22,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1698042193] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:15:22,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:15:22,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:15:22,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64549052] [2021-11-07 02:15:22,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:15:22,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:15:22,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:15:22,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:15:22,823 INFO L87 Difference]: Start difference. First operand 43974 states and 61262 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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) [2021-11-07 02:15:23,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:15:23,939 INFO L93 Difference]: Finished difference Result 43974 states and 61262 transitions. [2021-11-07 02:15:23,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:15:23,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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 53 [2021-11-07 02:15:23,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:15:24,102 INFO L225 Difference]: With dead ends: 43974 [2021-11-07 02:15:24,102 INFO L226 Difference]: Without dead ends: 43972 [2021-11-07 02:15:24,117 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:15:24,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43972 states. [2021-11-07 02:15:25,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43972 to 43972. [2021-11-07 02:15:26,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43972 states, 43729 states have (on average 1.3921196460015093) internal successors, (60876), 43759 states have internal predecessors, (60876), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (224), 148 states have call predecessors, (224), 160 states have call successors, (224) [2021-11-07 02:15:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43972 states to 43972 states and 61260 transitions. [2021-11-07 02:15:26,158 INFO L78 Accepts]: Start accepts. Automaton has 43972 states and 61260 transitions. Word has length 53 [2021-11-07 02:15:26,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:15:26,161 INFO L470 AbstractCegarLoop]: Abstraction has 43972 states and 61260 transitions. [2021-11-07 02:15:26,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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) [2021-11-07 02:15:26,162 INFO L276 IsEmpty]: Start isEmpty. Operand 43972 states and 61260 transitions. [2021-11-07 02:15:26,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 02:15:26,168 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:15:26,168 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:15:26,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:15:26,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:15:26,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:15:26,586 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:15:26,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:15:26,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1847867242, now seen corresponding path program 1 times [2021-11-07 02:15:26,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:15:26,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192549503] [2021-11-07 02:15:26,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:26,589 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:15:26,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:15:26,600 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:15:26,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:15:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:28,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:15:28,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:29,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:15:29,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:15:30,797 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:15:30,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192549503] [2021-11-07 02:15:30,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192549503] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:15:30,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1240236178] [2021-11-07 02:15:30,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:30,799 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:15:30,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:15:30,813 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:15:30,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 02:15:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:32,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:15:32,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:15:33,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:34,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:15:34,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1240236178] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:15:34,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:15:34,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 02:15:34,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409181369] [2021-11-07 02:15:34,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:15:34,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:15:34,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:15:34,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:15:34,869 INFO L87 Difference]: Start difference. First operand 43972 states and 61260 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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) [2021-11-07 02:15:35,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:15:35,984 INFO L93 Difference]: Finished difference Result 43972 states and 61260 transitions. [2021-11-07 02:15:35,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:15:35,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 54 [2021-11-07 02:15:35,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:15:36,110 INFO L225 Difference]: With dead ends: 43972 [2021-11-07 02:15:36,110 INFO L226 Difference]: Without dead ends: 37976 [2021-11-07 02:15:36,129 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:15:36,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37976 states. [2021-11-07 02:15:38,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37976 to 37976. [2021-11-07 02:15:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37976 states, 37734 states have (on average 1.4002491122064982) internal successors, (52837), 37763 states have internal predecessors, (52837), 160 states have call successors, (160), 80 states have call predecessors, (160), 80 states have return successors, (224), 148 states have call predecessors, (224), 160 states have call successors, (224) [2021-11-07 02:15:38,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37976 states to 37976 states and 53221 transitions. [2021-11-07 02:15:38,304 INFO L78 Accepts]: Start accepts. Automaton has 37976 states and 53221 transitions. Word has length 54 [2021-11-07 02:15:38,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:15:38,304 INFO L470 AbstractCegarLoop]: Abstraction has 37976 states and 53221 transitions. [2021-11-07 02:15:38,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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) [2021-11-07 02:15:38,305 INFO L276 IsEmpty]: Start isEmpty. Operand 37976 states and 53221 transitions. [2021-11-07 02:15:38,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 02:15:38,327 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:15:38,328 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:15:38,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:15:38,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:15:38,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:15:38,742 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:15:38,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:15:38,742 INFO L85 PathProgramCache]: Analyzing trace with hash -499044823, now seen corresponding path program 1 times [2021-11-07 02:15:38,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:15:38,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94046011] [2021-11-07 02:15:38,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:38,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:15:38,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:15:38,747 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:15:38,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:15:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:40,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:15:40,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:41,993 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:15:41,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:43,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:15:43,268 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:15:43,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94046011] [2021-11-07 02:15:43,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94046011] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:15:43,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1108245925] [2021-11-07 02:15:43,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:43,269 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:15:43,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:15:43,280 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:15:43,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 02:15:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:45,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:15:45,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:15:46,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:46,727 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:15:46,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1108245925] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:15:46,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:15:46,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:15:46,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235522858] [2021-11-07 02:15:46,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:15:46,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:15:46,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:15:46,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:15:46,730 INFO L87 Difference]: Start difference. First operand 37976 states and 53221 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-11-07 02:15:50,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:15:50,073 INFO L93 Difference]: Finished difference Result 91247 states and 127898 transitions. [2021-11-07 02:15:50,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:15:50,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 77 [2021-11-07 02:15:50,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:15:50,387 INFO L225 Difference]: With dead ends: 91247 [2021-11-07 02:15:50,387 INFO L226 Difference]: Without dead ends: 53303 [2021-11-07 02:15:50,454 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:15:50,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53303 states. [2021-11-07 02:15:53,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53303 to 53288. [2021-11-07 02:15:53,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53288 states, 52806 states have (on average 1.3999356133772678) internal successors, (73925), 52863 states have internal predecessors, (73925), 320 states have call successors, (320), 160 states have call predecessors, (320), 160 states have return successors, (448), 296 states have call predecessors, (448), 320 states have call successors, (448) [2021-11-07 02:15:53,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53288 states to 53288 states and 74693 transitions. [2021-11-07 02:15:53,293 INFO L78 Accepts]: Start accepts. Automaton has 53288 states and 74693 transitions. Word has length 77 [2021-11-07 02:15:53,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:15:53,294 INFO L470 AbstractCegarLoop]: Abstraction has 53288 states and 74693 transitions. [2021-11-07 02:15:53,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-11-07 02:15:53,294 INFO L276 IsEmpty]: Start isEmpty. Operand 53288 states and 74693 transitions. [2021-11-07 02:15:53,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 02:15:53,584 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:15:53,585 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:15:53,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:15:53,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:15:54,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:15:54,005 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:15:54,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:15:54,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1593072276, now seen corresponding path program 1 times [2021-11-07 02:15:54,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:15:54,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223034093] [2021-11-07 02:15:54,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:54,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:15:54,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:15:54,009 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:15:54,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:15:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:56,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:15:56,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:57,814 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 02:15:57,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 02:15:59,526 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:15:59,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223034093] [2021-11-07 02:15:59,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223034093] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:15:59,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [187719740] [2021-11-07 02:15:59,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:59,527 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:15:59,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:15:59,528 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:15:59,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 02:16:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:01,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:16:01,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:16:02,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:16:03,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [187719740] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:03,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:16:03,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:16:03,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812895920] [2021-11-07 02:16:03,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:16:03,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:03,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:16:03,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:16:03,345 INFO L87 Difference]: Start difference. First operand 53288 states and 74693 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-11-07 02:16:07,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:07,866 INFO L93 Difference]: Finished difference Result 106560 states and 149373 transitions. [2021-11-07 02:16:07,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:16:07,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 103 [2021-11-07 02:16:07,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:08,055 INFO L225 Difference]: With dead ends: 106560 [2021-11-07 02:16:08,055 INFO L226 Difference]: Without dead ends: 53302 [2021-11-07 02:16:08,156 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:16:08,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53302 states. [2021-11-07 02:16:10,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53302 to 53291. [2021-11-07 02:16:10,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53291 states, 52809 states have (on average 1.399875021303187) internal successors, (73926), 52866 states have internal predecessors, (73926), 320 states have call successors, (320), 160 states have call predecessors, (320), 160 states have return successors, (448), 296 states have call predecessors, (448), 320 states have call successors, (448) [2021-11-07 02:16:10,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53291 states to 53291 states and 74694 transitions. [2021-11-07 02:16:10,710 INFO L78 Accepts]: Start accepts. Automaton has 53291 states and 74694 transitions. Word has length 103 [2021-11-07 02:16:10,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:10,711 INFO L470 AbstractCegarLoop]: Abstraction has 53291 states and 74694 transitions. [2021-11-07 02:16:10,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-11-07 02:16:10,711 INFO L276 IsEmpty]: Start isEmpty. Operand 53291 states and 74694 transitions. [2021-11-07 02:16:10,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 02:16:10,790 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:10,790 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:10,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:11,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-07 02:16:11,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:16:11,210 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:16:11,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:11,210 INFO L85 PathProgramCache]: Analyzing trace with hash 220856389, now seen corresponding path program 1 times [2021-11-07 02:16:11,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:11,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851335932] [2021-11-07 02:16:11,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:11,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:11,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:11,214 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:11,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:16:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:13,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1300 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:16:13,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:15,164 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 02:16:15,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:16,845 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 02:16:16,845 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:16,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851335932] [2021-11-07 02:16:16,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851335932] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:16:16,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1107606573] [2021-11-07 02:16:16,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:16,846 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:16:16,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:16:16,847 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:16:16,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 02:16:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:19,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 1300 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:16:19,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:20,448 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:16:20,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:16:21,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1107606573] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:21,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:16:21,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:16:21,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047526176] [2021-11-07 02:16:21,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:16:21,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:21,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:16:21,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:16:21,423 INFO L87 Difference]: Start difference. First operand 53291 states and 74694 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2021-11-07 02:16:27,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:27,124 INFO L93 Difference]: Finished difference Result 103786 states and 145488 transitions. [2021-11-07 02:16:27,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:16:27,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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 107 [2021-11-07 02:16:27,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:27,330 INFO L225 Difference]: With dead ends: 103786 [2021-11-07 02:16:27,330 INFO L226 Difference]: Without dead ends: 50527 [2021-11-07 02:16:27,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:16:27,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50527 states. [2021-11-07 02:16:29,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50527 to 50527. [2021-11-07 02:16:29,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50527 states, 49805 states have (on average 1.3986145969280193) internal successors, (69658), 49890 states have internal predecessors, (69658), 480 states have call successors, (480), 240 states have call predecessors, (480), 240 states have return successors, (672), 444 states have call predecessors, (672), 480 states have call successors, (672) [2021-11-07 02:16:29,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50527 states to 50527 states and 70810 transitions. [2021-11-07 02:16:29,994 INFO L78 Accepts]: Start accepts. Automaton has 50527 states and 70810 transitions. Word has length 107 [2021-11-07 02:16:29,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:29,995 INFO L470 AbstractCegarLoop]: Abstraction has 50527 states and 70810 transitions. [2021-11-07 02:16:29,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2021-11-07 02:16:29,995 INFO L276 IsEmpty]: Start isEmpty. Operand 50527 states and 70810 transitions. [2021-11-07 02:16:30,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 02:16:30,067 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:30,067 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:30,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:30,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:30,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:16:30,469 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:16:30,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:30,470 INFO L85 PathProgramCache]: Analyzing trace with hash 701803775, now seen corresponding path program 1 times [2021-11-07 02:16:30,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:30,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545053744] [2021-11-07 02:16:30,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:30,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:30,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:30,474 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:30,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 02:16:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:32,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:16:32,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:16:34,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:35,351 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:16:35,351 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:35,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545053744] [2021-11-07 02:16:35,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545053744] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:16:35,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1948908466] [2021-11-07 02:16:35,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:35,352 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:16:35,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:16:35,353 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:16:35,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 02:16:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:38,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 02:16:38,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:16:39,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:16:40,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1948908466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:40,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:16:40,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 14 [2021-11-07 02:16:40,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267417125] [2021-11-07 02:16:40,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:16:40,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:16:40,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:16:40,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:16:40,655 INFO L87 Difference]: Start difference. First operand 50527 states and 70810 transitions. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-07 02:16:43,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:43,880 INFO L93 Difference]: Finished difference Result 80069 states and 113181 transitions. [2021-11-07 02:16:43,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:16:43,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 139 [2021-11-07 02:16:43,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:44,058 INFO L225 Difference]: With dead ends: 80069 [2021-11-07 02:16:44,058 INFO L226 Difference]: Without dead ends: 51823 [2021-11-07 02:16:44,125 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-11-07 02:16:44,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51823 states. [2021-11-07 02:16:46,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51823 to 50563. [2021-11-07 02:16:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50563 states, 49841 states have (on average 1.398326678838707) internal successors, (69694), 49926 states have internal predecessors, (69694), 480 states have call successors, (480), 240 states have call predecessors, (480), 240 states have return successors, (672), 444 states have call predecessors, (672), 480 states have call successors, (672) [2021-11-07 02:16:46,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50563 states to 50563 states and 70846 transitions. [2021-11-07 02:16:46,271 INFO L78 Accepts]: Start accepts. Automaton has 50563 states and 70846 transitions. Word has length 139 [2021-11-07 02:16:46,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:46,272 INFO L470 AbstractCegarLoop]: Abstraction has 50563 states and 70846 transitions. [2021-11-07 02:16:46,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-07 02:16:46,272 INFO L276 IsEmpty]: Start isEmpty. Operand 50563 states and 70846 transitions. [2021-11-07 02:16:46,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-07 02:16:46,525 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:46,525 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:46,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:46,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:46,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:16:46,937 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:16:46,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:46,938 INFO L85 PathProgramCache]: Analyzing trace with hash -431319909, now seen corresponding path program 1 times [2021-11-07 02:16:46,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:16:46,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684509002] [2021-11-07 02:16:46,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:46,941 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:16:46,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:16:46,942 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:16:46,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 02:16:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:49,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:16:49,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:16:50,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:52,077 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:16:52,077 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:16:52,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684509002] [2021-11-07 02:16:52,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [684509002] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:16:52,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [934329190] [2021-11-07 02:16:52,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:52,078 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:16:52,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:16:52,079 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:16:52,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 02:16:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:56,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:16:56,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:16:57,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:57,987 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:16:57,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [934329190] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:16:57,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482122741] [2021-11-07 02:16:57,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:57,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:16:57,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:16:57,990 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:16:57,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 02:17:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:17:00,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:17:00,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:17:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:17:02,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:17:04,041 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:17:04,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482122741] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:17:04,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 02:17:04,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [5, 5, 5, 5] total 15 [2021-11-07 02:17:04,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365016450] [2021-11-07 02:17:04,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 02:17:04,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:17:04,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 02:17:04,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-07 02:17:04,043 INFO L87 Difference]: Start difference. First operand 50563 states and 70846 transitions. Second operand has 9 states, 9 states have (on average 23.88888888888889) internal successors, (215), 9 states have internal predecessors, (215), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 02:17:12,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:17:12,623 INFO L93 Difference]: Finished difference Result 101083 states and 141629 transitions. [2021-11-07 02:17:12,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:17:12,625 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 23.88888888888889) internal successors, (215), 9 states have internal predecessors, (215), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 141 [2021-11-07 02:17:12,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:17:12,751 INFO L225 Difference]: With dead ends: 101083 [2021-11-07 02:17:12,751 INFO L226 Difference]: Without dead ends: 50552 [2021-11-07 02:17:12,825 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 827 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-11-07 02:17:12,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50552 states. [2021-11-07 02:17:15,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50552 to 50539. [2021-11-07 02:17:15,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50539 states, 49829 states have (on average 1.3981817816933915) internal successors, (69670), 49914 states have internal predecessors, (69670), 468 states have call successors, (468), 240 states have call predecessors, (468), 240 states have return successors, (654), 432 states have call predecessors, (654), 468 states have call successors, (654) [2021-11-07 02:17:15,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50539 states to 50539 states and 70792 transitions. [2021-11-07 02:17:15,246 INFO L78 Accepts]: Start accepts. Automaton has 50539 states and 70792 transitions. Word has length 141 [2021-11-07 02:17:15,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:17:15,246 INFO L470 AbstractCegarLoop]: Abstraction has 50539 states and 70792 transitions. [2021-11-07 02:17:15,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.88888888888889) internal successors, (215), 9 states have internal predecessors, (215), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 02:17:15,247 INFO L276 IsEmpty]: Start isEmpty. Operand 50539 states and 70792 transitions. [2021-11-07 02:17:15,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 02:17:15,319 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:17:15,320 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:17:15,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-07 02:17:15,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-07 02:17:15,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-07 02:17:15,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:17:15,921 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:17:15,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:17:15,922 INFO L85 PathProgramCache]: Analyzing trace with hash 133362063, now seen corresponding path program 1 times [2021-11-07 02:17:15,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:17:15,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584176431] [2021-11-07 02:17:15,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:15,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:17:15,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:17:15,926 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:17:15,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 02:17:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:17:18,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:17:18,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:17:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:17:20,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:17:21,450 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:17:21,450 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:17:21,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584176431] [2021-11-07 02:17:21,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584176431] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:17:21,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [291864134] [2021-11-07 02:17:21,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:21,451 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:17:21,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:17:21,451 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:17:21,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-07 02:17:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:17:25,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:17:25,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:17:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:17:26,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:17:27,169 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:17:27,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [291864134] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:17:27,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579363049] [2021-11-07 02:17:27,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:27,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:17:27,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:17:27,176 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:17:27,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-07 02:17:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:17:29,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:17:29,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:17:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:17:31,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:17:33,801 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:17:33,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579363049] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:17:33,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 02:17:33,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 9] imperfect sequences [5, 5, 5, 5] total 20 [2021-11-07 02:17:33,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279774812] [2021-11-07 02:17:33,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 02:17:33,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:17:33,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 02:17:33,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-11-07 02:17:33,803 INFO L87 Difference]: Start difference. First operand 50539 states and 70792 transitions. Second operand has 14 states, 14 states have (on average 15.214285714285714) internal successors, (213), 14 states have internal predecessors, (213), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 02:17:48,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:17:48,698 INFO L93 Difference]: Finished difference Result 172313 states and 240921 transitions. [2021-11-07 02:17:48,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 02:17:48,699 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.214285714285714) internal successors, (213), 14 states have internal predecessors, (213), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 140 [2021-11-07 02:17:48,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:17:49,023 INFO L225 Difference]: With dead ends: 172313 [2021-11-07 02:17:49,023 INFO L226 Difference]: Without dead ends: 121806 [2021-11-07 02:17:49,118 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 842 GetRequests, 816 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2021-11-07 02:17:49,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121806 states. [2021-11-07 02:17:52,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121806 to 50515. [2021-11-07 02:17:52,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50515 states, 49817 states have (on average 1.3980368147419555) internal successors, (69646), 49902 states have internal predecessors, (69646), 456 states have call successors, (456), 240 states have call predecessors, (456), 240 states have return successors, (636), 420 states have call predecessors, (636), 456 states have call successors, (636) [2021-11-07 02:17:52,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50515 states to 50515 states and 70738 transitions. [2021-11-07 02:17:52,561 INFO L78 Accepts]: Start accepts. Automaton has 50515 states and 70738 transitions. Word has length 140 [2021-11-07 02:17:52,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:17:52,562 INFO L470 AbstractCegarLoop]: Abstraction has 50515 states and 70738 transitions. [2021-11-07 02:17:52,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.214285714285714) internal successors, (213), 14 states have internal predecessors, (213), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-07 02:17:52,563 INFO L276 IsEmpty]: Start isEmpty. Operand 50515 states and 70738 transitions. [2021-11-07 02:17:52,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 02:17:52,605 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:17:52,605 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:17:52,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-07 02:17:52,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-07 02:17:53,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-07 02:17:53,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:17:53,234 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 02:17:53,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:17:53,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2097719592, now seen corresponding path program 1 times [2021-11-07 02:17:53,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:17:53,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580291374] [2021-11-07 02:17:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:53,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:17:53,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:17:53,237 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:17:53,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-07 02:17:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:17:56,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:17:56,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:17:57,628 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:17:57,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:17:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:17:58,693 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:17:58,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580291374] [2021-11-07 02:17:58,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580291374] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:17:58,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [749869211] [2021-11-07 02:17:58,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:17:58,694 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:17:58,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:17:58,694 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:17:58,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-07 02:18:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:02,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:18:02,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:04,209 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:18:04,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:04,772 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 02:18:04,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [749869211] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:18:04,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459131893] [2021-11-07 02:18:04,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:18:04,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:18:04,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:18:04,784 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:18:04,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804415e-f27d-4b4a-949c-2d99738e6eef/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-07 02:18:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:18:07,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:18:07,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:18:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:18:09,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:18:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:18:10,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459131893] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:18:10,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 02:18:10,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [5, 5, 5, 5] total 15 [2021-11-07 02:18:10,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084096362] [2021-11-07 02:18:10,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 02:18:10,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:18:10,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 02:18:10,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-07 02:18:10,498 INFO L87 Difference]: Start difference. First operand 50515 states and 70738 transitions. Second operand has 9 states, 9 states have (on average 23.444444444444443) internal successors, (211), 9 states have internal predecessors, (211), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)