./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 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/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_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH --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-9ad7fb2 [2021-11-03 05:41:44,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:41:44,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:41:44,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:41:44,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:41:44,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:41:44,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:41:44,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:41:44,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:41:44,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:41:44,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:41:44,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:41:44,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:41:44,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:41:44,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:41:44,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:41:44,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:41:44,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:41:44,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:41:44,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:41:44,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:41:44,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:41:44,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:41:44,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:41:44,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:41:44,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:41:44,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:41:44,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:41:44,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:41:44,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:41:44,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:41:44,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:41:44,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:41:44,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:41:44,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:41:44,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:41:44,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:41:44,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:41:44,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:41:44,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:41:44,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:41:44,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 05:41:44,544 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:41:44,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:41:44,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:41:44,548 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:41:44,548 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:41:44,548 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:41:44,549 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:41:44,549 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:41:44,555 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:41:44,556 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:41:44,557 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:41:44,557 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:41:44,557 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:41:44,557 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:41:44,558 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:41:44,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:41:44,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:41:44,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:41:44,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:41:44,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:41:44,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:41:44,560 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:41:44,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:41:44,560 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:41:44,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:41:44,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:41:44,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:41:44,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:41:44,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:41:44,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:41:44,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:41:44,564 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:41:44,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:41:44,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:41:44,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:41:44,565 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:41:44,565 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_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f258bb699a014f11eb0babe874a45670072f33ce1154e31a2f0110b34e4ef74 [2021-11-03 05:41:44,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:41:44,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:41:44,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:41:44,874 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:41:44,876 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:41:44,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/../../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 [2021-11-03 05:41:44,953 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/data/bd185ed07/a688408b31f7448b9cc340f9f7e24aaa/FLAG5b2cecd92 [2021-11-03 05:41:45,897 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:41:45,898 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/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 [2021-11-03 05:41:45,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/data/bd185ed07/a688408b31f7448b9cc340f9f7e24aaa/FLAG5b2cecd92 [2021-11-03 05:41:46,353 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/data/bd185ed07/a688408b31f7448b9cc340f9f7e24aaa [2021-11-03 05:41:46,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:41:46,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:41:46,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:41:46,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:41:46,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:41:46,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:41:46" (1/1) ... [2021-11-03 05:41:46,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64cedf88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:41:46, skipping insertion in model container [2021-11-03 05:41:46,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:41:46" (1/1) ... [2021-11-03 05:41:46,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:41:46,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:41:47,783 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:47,788 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:47,879 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:47,935 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:47,974 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:47,981 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,194 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,283 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,327 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,364 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,370 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,375 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,382 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,400 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,435 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,440 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,446 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,451 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,455 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,486 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,497 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,524 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,526 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,526 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,527 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,547 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_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/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] [2021-11-03 05:41:48,560 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:41:48,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:41:48,629 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) [2021-11-03 05:41:48,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5a1b20a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:41:48, skipping insertion in model container [2021-11-03 05:41:48,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:41:48,630 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:41:48,633 INFO L168 Benchmark]: Toolchain (without parser) took 2273.94 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 66.8 MB in the beginning and 62.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. [2021-11-03 05:41:48,634 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 94.4 MB. Free memory is still 75.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:41:48,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2271.56 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 66.5 MB in the beginning and 62.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. [2021-11-03 05:41:48,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 94.4 MB. Free memory is still 75.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2271.56 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 66.5 MB in the beginning and 62.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 44.2 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_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/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_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH --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-9ad7fb2 [2021-11-03 05:41:50,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:41:50,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:41:50,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:41:50,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:41:50,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:41:50,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:41:50,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:41:50,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:41:50,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:41:50,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:41:50,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:41:50,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:41:50,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:41:50,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:41:50,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:41:50,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:41:50,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:41:50,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:41:50,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:41:50,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:41:50,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:41:50,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:41:50,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:41:51,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:41:51,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:41:51,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:41:51,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:41:51,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:41:51,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:41:51,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:41:51,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:41:51,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:41:51,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:41:51,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:41:51,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:41:51,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:41:51,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:41:51,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:41:51,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:41:51,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:41:51,015 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 05:41:51,056 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:41:51,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:41:51,058 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:41:51,058 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:41:51,059 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:41:51,059 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:41:51,059 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:41:51,059 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:41:51,059 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:41:51,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:41:51,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:41:51,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:41:51,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:41:51,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:41:51,063 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:41:51,063 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:41:51,063 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:41:51,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:41:51,064 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:41:51,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:41:51,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:41:51,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:41:51,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:41:51,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:41:51,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:41:51,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:41:51,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:41:51,066 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:41:51,066 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:41:51,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:41:51,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:41:51,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:41:51,067 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_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f258bb699a014f11eb0babe874a45670072f33ce1154e31a2f0110b34e4ef74 [2021-11-03 05:41:51,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:41:51,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:41:51,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:41:51,429 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:41:51,429 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:41:51,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/../../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 [2021-11-03 05:41:51,497 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/data/84ac5c8b2/09290dea997b419c8f77241a2506b908/FLAG793891aa5 [2021-11-03 05:41:52,465 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:41:52,466 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/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 [2021-11-03 05:41:52,514 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/data/84ac5c8b2/09290dea997b419c8f77241a2506b908/FLAG793891aa5 [2021-11-03 05:41:52,839 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/data/84ac5c8b2/09290dea997b419c8f77241a2506b908 [2021-11-03 05:41:52,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:41:52,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:41:52,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:41:52,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:41:52,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:41:52,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:41:52" (1/1) ... [2021-11-03 05:41:52,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a36c071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:41:52, skipping insertion in model container [2021-11-03 05:41:52,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:41:52" (1/1) ... [2021-11-03 05:41:52,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:41:53,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:41:54,910 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_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/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] [2021-11-03 05:41:54,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:41:55,008 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:41:55,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:41:55,489 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_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/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] [2021-11-03 05:41:55,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:41:55,527 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:41:55,907 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_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/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] [2021-11-03 05:41:55,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:41:56,087 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:41:56,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:41:56 WrapperNode [2021-11-03 05:41:56,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:41:56,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:41:56,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:41:56,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:41:56,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:41:56" (1/1) ... [2021-11-03 05:41:56,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:41:56" (1/1) ... [2021-11-03 05:41:58,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:41:58,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:41:58,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:41:58,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:41:58,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:41:56" (1/1) ... [2021-11-03 05:41:58,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:41:56" (1/1) ... [2021-11-03 05:41:58,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:41:56" (1/1) ... [2021-11-03 05:41:58,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:41:56" (1/1) ... [2021-11-03 05:42:00,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:41:56" (1/1) ... [2021-11-03 05:42:00,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:41:56" (1/1) ... [2021-11-03 05:42:00,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:41:56" (1/1) ... [2021-11-03 05:42:00,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:42:00,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:42:00,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:42:00,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:42:00,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:41:56" (1/1) ... [2021-11-03 05:42:00,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:42:00,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:42:00,710 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:42:00,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:42:00,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 05:42:00,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 05:42:00,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:42:00,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 05:42:00,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 05:42:00,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 05:42:00,976 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_usb_bulk_msg [2021-11-03 05:42:00,976 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_usb_bulk_msg [2021-11-03 05:42:00,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-03 05:42:00,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-03 05:42:00,976 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_signal_sdio_irq [2021-11-03 05:42:00,976 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_signal_sdio_irq [2021-11-03 05:42:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2021-11-03 05:42:00,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2021-11-03 05:42:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure __command_read_data [2021-11-03 05:42:00,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_read_data [2021-11-03 05:42:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:42:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_27 [2021-11-03 05:42:00,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_27 [2021-11-03 05:42:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:42:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2021-11-03 05:42:00,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2021-11-03 05:42:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure irqpoll_out_completed [2021-11-03 05:42:00,978 INFO L138 BoogieDeclarations]: Found implementation of procedure irqpoll_out_completed [2021-11-03 05:42:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2021-11-03 05:42:00,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2021-11-03 05:42:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 05:42:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 05:42:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 05:42:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:42:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:42:00,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 05:42:00,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-03 05:42:00,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:42:00,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 05:42:00,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 05:42:00,980 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_enable_sdio_irq [2021-11-03 05:42:00,981 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_enable_sdio_irq [2021-11-03 05:42:00,981 INFO L130 BoogieDeclarations]: Found specification of procedure command_out_completed [2021-11-03 05:42:00,981 INFO L138 BoogieDeclarations]: Found implementation of procedure command_out_completed [2021-11-03 05:42:00,981 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_cmndwork_thread [2021-11-03 05:42:00,982 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_cmndwork_thread [2021-11-03 05:42:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure send_command [2021-11-03 05:42:00,982 INFO L138 BoogieDeclarations]: Found implementation of procedure send_command [2021-11-03 05:42:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure send_irqpoll [2021-11-03 05:42:00,982 INFO L138 BoogieDeclarations]: Found implementation of procedure send_irqpoll [2021-11-03 05:42:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-03 05:42:00,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-03 05:42:00,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-03 05:42:00,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-03 05:42:00,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_32 [2021-11-03 05:42:00,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_32 [2021-11-03 05:42:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:42:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:42:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-03 05:42:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-03 05:42:00,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-03 05:42:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-03 05:42:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-03 05:42:00,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-03 05:42:00,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-03 05:42:00,987 INFO L130 BoogieDeclarations]: Found specification of procedure vub300_pollwork_thread [2021-11-03 05:42:00,988 INFO L138 BoogieDeclarations]: Found implementation of procedure vub300_pollwork_thread [2021-11-03 05:42:00,988 INFO L130 BoogieDeclarations]: Found specification of procedure __do_poll [2021-11-03 05:42:00,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __do_poll [2021-11-03 05:42:00,989 INFO L130 BoogieDeclarations]: Found specification of procedure __command_write_data [2021-11-03 05:42:00,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __command_write_data [2021-11-03 05:42:00,989 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-03 05:42:00,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-03 05:42:00,990 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-03 05:42:00,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:42:00,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:45:25,749 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:45:25,749 INFO L299 CfgBuilder]: Removed 14764 assume(true) statements. [2021-11-03 05:45:25,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:45:25 BoogieIcfgContainer [2021-11-03 05:45:25,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:45:25,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:45:25,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:45:25,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:45:25,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:41:52" (1/3) ... [2021-11-03 05:45:25,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13728221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:45:25, skipping insertion in model container [2021-11-03 05:45:25,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:41:56" (2/3) ... [2021-11-03 05:45:25,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13728221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:45:25, skipping insertion in model container [2021-11-03 05:45:25,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:45:25" (3/3) ... [2021-11-03 05:45:25,769 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 [2021-11-03 05:45:25,774 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:45:25,775 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-03 05:45:25,859 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:45:25,865 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 [2021-11-03 05:45:25,865 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-03 05:45:26,050 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) [2021-11-03 05:45:26,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 05:45:26,078 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:26,079 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] [2021-11-03 05:45:26,080 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)] === [2021-11-03 05:45:26,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:26,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1037244845, now seen corresponding path program 1 times [2021-11-03 05:45:26,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:45:26,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678780953] [2021-11-03 05:45:26,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:26,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:45:26,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:45:26,119 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:45:26,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:45:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:27,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:45:27,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:28,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:45:28,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:28,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:45:28,497 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:45:28,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678780953] [2021-11-03 05:45:28,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678780953] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:28,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:28,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:45:28,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057357180] [2021-11-03 05:45:28,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:45:28,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:45:28,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:45:28,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:45:28,554 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) [2021-11-03 05:45:29,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:29,006 INFO L93 Difference]: Finished difference Result 22236 states and 32001 transitions. [2021-11-03 05:45:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:45:29,013 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 [2021-11-03 05:45:29,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:29,112 INFO L225 Difference]: With dead ends: 22236 [2021-11-03 05:45:29,112 INFO L226 Difference]: Without dead ends: 11103 [2021-11-03 05:45:29,150 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 [2021-11-03 05:45:29,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11103 states. [2021-11-03 05:45:29,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11103 to 11103. [2021-11-03 05:45:29,747 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) [2021-11-03 05:45:29,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11103 states to 11103 states and 15930 transitions. [2021-11-03 05:45:29,808 INFO L78 Accepts]: Start accepts. Automaton has 11103 states and 15930 transitions. Word has length 47 [2021-11-03 05:45:29,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:29,809 INFO L470 AbstractCegarLoop]: Abstraction has 11103 states and 15930 transitions. [2021-11-03 05:45:29,809 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) [2021-11-03 05:45:29,809 INFO L276 IsEmpty]: Start isEmpty. Operand 11103 states and 15930 transitions. [2021-11-03 05:45:29,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 05:45:29,814 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:29,814 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] [2021-11-03 05:45:29,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:45:30,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:45:30,038 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)] === [2021-11-03 05:45:30,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:30,039 INFO L85 PathProgramCache]: Analyzing trace with hash 111286925, now seen corresponding path program 1 times [2021-11-03 05:45:30,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:45:30,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523491450] [2021-11-03 05:45:30,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:30,042 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:45:30,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:45:30,043 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:45:30,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:45:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:31,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:45:31,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:45:31,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:45:32,201 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:45:32,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523491450] [2021-11-03 05:45:32,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523491450] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:32,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:32,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:45:32,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111174943] [2021-11-03 05:45:32,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:45:32,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:45:32,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:45:32,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:45:32,204 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) [2021-11-03 05:45:32,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:32,924 INFO L93 Difference]: Finished difference Result 22190 states and 31847 transitions. [2021-11-03 05:45:32,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:45:32,925 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 [2021-11-03 05:45:32,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:32,993 INFO L225 Difference]: With dead ends: 22190 [2021-11-03 05:45:32,993 INFO L226 Difference]: Without dead ends: 11107 [2021-11-03 05:45:33,016 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 [2021-11-03 05:45:33,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11107 states. [2021-11-03 05:45:33,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11107 to 11107. [2021-11-03 05:45:33,343 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) [2021-11-03 05:45:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11107 states to 11107 states and 15934 transitions. [2021-11-03 05:45:33,420 INFO L78 Accepts]: Start accepts. Automaton has 11107 states and 15934 transitions. Word has length 47 [2021-11-03 05:45:33,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:33,421 INFO L470 AbstractCegarLoop]: Abstraction has 11107 states and 15934 transitions. [2021-11-03 05:45:33,422 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) [2021-11-03 05:45:33,422 INFO L276 IsEmpty]: Start isEmpty. Operand 11107 states and 15934 transitions. [2021-11-03 05:45:33,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 05:45:33,429 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:33,429 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] [2021-11-03 05:45:33,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:45:33,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:45:33,646 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)] === [2021-11-03 05:45:33,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:33,647 INFO L85 PathProgramCache]: Analyzing trace with hash -714878387, now seen corresponding path program 1 times [2021-11-03 05:45:33,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:45:33,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599556928] [2021-11-03 05:45:33,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:33,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:45:33,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:45:33,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:45:33,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:45:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:35,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:45:35,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:36,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:45:36,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:45:36,884 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:45:36,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599556928] [2021-11-03 05:45:36,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599556928] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:45:36,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1346187299] [2021-11-03 05:45:36,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:36,885 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:45:36,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:45:36,901 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:45:36,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-03 05:45:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:38,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:45:38,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:39,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:45:39,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:39,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:45:39,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1346187299] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:39,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:45:39,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-03 05:45:39,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362548443] [2021-11-03 05:45:39,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:45:39,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:45:39,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:45:39,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:45:39,941 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) [2021-11-03 05:45:55,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:55,964 INFO L93 Difference]: Finished difference Result 33246 states and 47797 transitions. [2021-11-03 05:45:55,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:45:55,965 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 [2021-11-03 05:45:55,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:56,058 INFO L225 Difference]: With dead ends: 33246 [2021-11-03 05:45:56,059 INFO L226 Difference]: Without dead ends: 22171 [2021-11-03 05:45:56,088 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:45:56,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22171 states. [2021-11-03 05:45:56,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22171 to 22171. [2021-11-03 05:45:56,767 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) [2021-11-03 05:45:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22171 states to 22171 states and 31198 transitions. [2021-11-03 05:45:56,857 INFO L78 Accepts]: Start accepts. Automaton has 22171 states and 31198 transitions. Word has length 51 [2021-11-03 05:45:56,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:56,860 INFO L470 AbstractCegarLoop]: Abstraction has 22171 states and 31198 transitions. [2021-11-03 05:45:56,860 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) [2021-11-03 05:45:56,860 INFO L276 IsEmpty]: Start isEmpty. Operand 22171 states and 31198 transitions. [2021-11-03 05:45:56,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 05:45:56,865 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:56,867 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] [2021-11-03 05:45:56,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:45:57,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:45:57,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:45:57,285 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)] === [2021-11-03 05:45:57,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:57,285 INFO L85 PathProgramCache]: Analyzing trace with hash -686346112, now seen corresponding path program 1 times [2021-11-03 05:45:57,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:45:57,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659171642] [2021-11-03 05:45:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:57,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:45:57,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:45:57,290 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:45:57,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:45:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:58,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:45:58,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:59,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:45:59,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:00,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:46:00,060 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:46:00,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659171642] [2021-11-03 05:46:00,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659171642] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:46:00,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2067871560] [2021-11-03 05:46:00,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:00,060 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:46:00,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:46:00,062 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:46:00,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-03 05:46:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:01,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:46:01,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:46:02,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:46:03,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2067871560] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:03,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:46:03,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-03 05:46:03,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563361680] [2021-11-03 05:46:03,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:46:03,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:46:03,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:46:03,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:46:03,047 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) [2021-11-03 05:46:10,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:10,910 INFO L93 Difference]: Finished difference Result 66131 states and 93210 transitions. [2021-11-03 05:46:10,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:46:10,911 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 [2021-11-03 05:46:10,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:11,191 INFO L225 Difference]: With dead ends: 66131 [2021-11-03 05:46:11,192 INFO L226 Difference]: Without dead ends: 43992 [2021-11-03 05:46:11,248 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:46:11,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43992 states. [2021-11-03 05:46:12,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43992 to 43974. [2021-11-03 05:46:12,441 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) [2021-11-03 05:46:12,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43974 states to 43974 states and 61262 transitions. [2021-11-03 05:46:12,591 INFO L78 Accepts]: Start accepts. Automaton has 43974 states and 61262 transitions. Word has length 52 [2021-11-03 05:46:12,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:12,592 INFO L470 AbstractCegarLoop]: Abstraction has 43974 states and 61262 transitions. [2021-11-03 05:46:12,592 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) [2021-11-03 05:46:12,592 INFO L276 IsEmpty]: Start isEmpty. Operand 43974 states and 61262 transitions. [2021-11-03 05:46:12,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 05:46:12,595 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:12,596 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] [2021-11-03 05:46:12,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:46:12,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-11-03 05:46:13,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:46:13,017 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)] === [2021-11-03 05:46:13,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:13,018 INFO L85 PathProgramCache]: Analyzing trace with hash 198154423, now seen corresponding path program 1 times [2021-11-03 05:46:13,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:46:13,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908968770] [2021-11-03 05:46:13,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:13,019 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:46:13,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:46:13,020 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:46:13,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:46:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:14,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:46:14,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:46:15,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:15,940 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:46:15,940 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:46:15,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908968770] [2021-11-03 05:46:15,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908968770] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:46:15,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [262274422] [2021-11-03 05:46:15,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:15,941 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:46:15,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:46:15,953 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:46:15,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-03 05:46:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:17,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:46:17,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:18,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:46:18,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:18,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:46:18,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [262274422] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:18,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:46:18,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-03 05:46:18,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372221766] [2021-11-03 05:46:18,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:46:18,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:46:18,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:46:18,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:46:18,952 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) [2021-11-03 05:46:19,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:19,758 INFO L93 Difference]: Finished difference Result 43974 states and 61262 transitions. [2021-11-03 05:46:19,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:46:19,759 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 [2021-11-03 05:46:19,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:19,897 INFO L225 Difference]: With dead ends: 43974 [2021-11-03 05:46:19,897 INFO L226 Difference]: Without dead ends: 43972 [2021-11-03 05:46:19,912 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:46:19,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43972 states. [2021-11-03 05:46:21,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43972 to 43972. [2021-11-03 05:46:21,388 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) [2021-11-03 05:46:21,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43972 states to 43972 states and 61260 transitions. [2021-11-03 05:46:21,494 INFO L78 Accepts]: Start accepts. Automaton has 43972 states and 61260 transitions. Word has length 53 [2021-11-03 05:46:21,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:21,497 INFO L470 AbstractCegarLoop]: Abstraction has 43972 states and 61260 transitions. [2021-11-03 05:46:21,497 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) [2021-11-03 05:46:21,497 INFO L276 IsEmpty]: Start isEmpty. Operand 43972 states and 61260 transitions. [2021-11-03 05:46:21,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 05:46:21,502 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:21,502 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] [2021-11-03 05:46:21,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-11-03 05:46:21,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:46:21,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:46:21,928 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)] === [2021-11-03 05:46:21,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:21,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1847867242, now seen corresponding path program 1 times [2021-11-03 05:46:21,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:46:21,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629046684] [2021-11-03 05:46:21,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:21,930 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:46:21,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:46:21,938 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:46:21,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:46:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:23,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:46:23,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:24,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:46:24,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:46:24,817 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:46:24,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629046684] [2021-11-03 05:46:24,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629046684] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:46:24,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1435401756] [2021-11-03 05:46:24,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:24,818 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:46:24,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:46:24,825 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:46:24,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 05:46:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:26,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:46:26,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:27,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:46:27,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:27,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:46:27,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1435401756] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:27,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:46:27,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-03 05:46:27,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772561430] [2021-11-03 05:46:27,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:46:27,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:46:27,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:46:27,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:46:27,814 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) [2021-11-03 05:46:28,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:28,800 INFO L93 Difference]: Finished difference Result 43972 states and 61260 transitions. [2021-11-03 05:46:28,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:46:28,801 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 [2021-11-03 05:46:28,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:28,930 INFO L225 Difference]: With dead ends: 43972 [2021-11-03 05:46:28,930 INFO L226 Difference]: Without dead ends: 37976 [2021-11-03 05:46:28,948 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:46:29,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37976 states. [2021-11-03 05:46:30,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37976 to 37976. [2021-11-03 05:46:30,340 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) [2021-11-03 05:46:30,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37976 states to 37976 states and 53221 transitions. [2021-11-03 05:46:30,437 INFO L78 Accepts]: Start accepts. Automaton has 37976 states and 53221 transitions. Word has length 54 [2021-11-03 05:46:30,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:30,437 INFO L470 AbstractCegarLoop]: Abstraction has 37976 states and 53221 transitions. [2021-11-03 05:46:30,438 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) [2021-11-03 05:46:30,438 INFO L276 IsEmpty]: Start isEmpty. Operand 37976 states and 53221 transitions. [2021-11-03 05:46:30,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 05:46:30,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:30,455 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] [2021-11-03 05:46:30,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:46:30,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:46:30,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:46:30,873 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)] === [2021-11-03 05:46:30,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:30,873 INFO L85 PathProgramCache]: Analyzing trace with hash -499044823, now seen corresponding path program 1 times [2021-11-03 05:46:30,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:46:30,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858537544] [2021-11-03 05:46:30,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:30,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:46:30,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:46:30,877 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:46:30,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:46:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:32,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:46:32,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 05:46:33,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 05:46:34,267 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:46:34,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858537544] [2021-11-03 05:46:34,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858537544] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:46:34,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1284466567] [2021-11-03 05:46:34,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:34,267 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:46:34,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:46:34,268 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:46:34,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-03 05:46:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:35,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:46:35,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:46:36,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:36,840 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:46:36,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1284466567] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:36,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:46:36,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:46:36,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588283862] [2021-11-03 05:46:36,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:46:36,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:46:36,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:46:36,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:46:36,842 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) [2021-11-03 05:46:39,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:39,317 INFO L93 Difference]: Finished difference Result 91247 states and 127898 transitions. [2021-11-03 05:46:39,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:46:39,318 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 [2021-11-03 05:46:39,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:39,488 INFO L225 Difference]: With dead ends: 91247 [2021-11-03 05:46:39,488 INFO L226 Difference]: Without dead ends: 53303 [2021-11-03 05:46:39,543 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:46:39,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53303 states. [2021-11-03 05:46:41,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53303 to 53288. [2021-11-03 05:46:41,792 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) [2021-11-03 05:46:41,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53288 states to 53288 states and 74693 transitions. [2021-11-03 05:46:41,889 INFO L78 Accepts]: Start accepts. Automaton has 53288 states and 74693 transitions. Word has length 77 [2021-11-03 05:46:41,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:41,890 INFO L470 AbstractCegarLoop]: Abstraction has 53288 states and 74693 transitions. [2021-11-03 05:46:41,890 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) [2021-11-03 05:46:41,890 INFO L276 IsEmpty]: Start isEmpty. Operand 53288 states and 74693 transitions. [2021-11-03 05:46:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-03 05:46:41,927 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:41,928 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] [2021-11-03 05:46:41,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-03 05:46:42,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-03 05:46:42,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:46:42,366 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)] === [2021-11-03 05:46:42,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:42,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1593072276, now seen corresponding path program 1 times [2021-11-03 05:46:42,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:46:42,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916846619] [2021-11-03 05:46:42,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:42,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:46:42,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:46:42,369 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:46:42,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:46:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:44,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:46:44,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:45,213 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-03 05:46:45,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:46,341 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-03 05:46:46,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:46:46,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916846619] [2021-11-03 05:46:46,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916846619] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:46:46,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1897948635] [2021-11-03 05:46:46,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:46,342 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:46:46,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:46:46,344 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:46:46,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 05:46:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:48,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:46:48,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:48,628 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:46:48,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:46:49,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1897948635] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:49,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:46:49,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:46:49,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957455935] [2021-11-03 05:46:49,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:46:49,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:46:49,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:46:49,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:46:49,067 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) [2021-11-03 05:46:52,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:52,837 INFO L93 Difference]: Finished difference Result 106560 states and 149373 transitions. [2021-11-03 05:46:52,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:46:52,838 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 [2021-11-03 05:46:52,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:52,990 INFO L225 Difference]: With dead ends: 106560 [2021-11-03 05:46:52,990 INFO L226 Difference]: Without dead ends: 53302 [2021-11-03 05:46:53,086 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:46:53,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53302 states. [2021-11-03 05:46:54,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53302 to 53291. [2021-11-03 05:46:55,016 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) [2021-11-03 05:46:55,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53291 states to 53291 states and 74694 transitions. [2021-11-03 05:46:55,122 INFO L78 Accepts]: Start accepts. Automaton has 53291 states and 74694 transitions. Word has length 103 [2021-11-03 05:46:55,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:55,123 INFO L470 AbstractCegarLoop]: Abstraction has 53291 states and 74694 transitions. [2021-11-03 05:46:55,123 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) [2021-11-03 05:46:55,123 INFO L276 IsEmpty]: Start isEmpty. Operand 53291 states and 74694 transitions. [2021-11-03 05:46:55,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-03 05:46:55,154 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:55,154 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] [2021-11-03 05:46:55,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-03 05:46:55,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:46:55,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:46:55,573 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)] === [2021-11-03 05:46:55,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:55,573 INFO L85 PathProgramCache]: Analyzing trace with hash 220856389, now seen corresponding path program 1 times [2021-11-03 05:46:55,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:46:55,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458339358] [2021-11-03 05:46:55,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:55,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:46:55,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:46:55,576 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:46:55,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 05:46:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:57,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 1300 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:46:57,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:58,396 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-03 05:46:58,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:59,562 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-03 05:46:59,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:46:59,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458339358] [2021-11-03 05:46:59,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458339358] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:46:59,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1191845854] [2021-11-03 05:46:59,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:59,563 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:46:59,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:46:59,564 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:46:59,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 05:47:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:01,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 1300 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:47:01,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:47:02,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:03,276 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:47:03,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1191845854] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:03,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:47:03,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 05:47:03,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205990733] [2021-11-03 05:47:03,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:47:03,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:03,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:47:03,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:47:03,278 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) [2021-11-03 05:47:08,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:08,346 INFO L93 Difference]: Finished difference Result 103786 states and 145488 transitions. [2021-11-03 05:47:08,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:47:08,347 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 [2021-11-03 05:47:08,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:08,492 INFO L225 Difference]: With dead ends: 103786 [2021-11-03 05:47:08,493 INFO L226 Difference]: Without dead ends: 50527 [2021-11-03 05:47:08,604 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:47:08,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50527 states. [2021-11-03 05:47:10,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50527 to 50527. [2021-11-03 05:47:10,835 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) [2021-11-03 05:47:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50527 states to 50527 states and 70810 transitions. [2021-11-03 05:47:10,950 INFO L78 Accepts]: Start accepts. Automaton has 50527 states and 70810 transitions. Word has length 107 [2021-11-03 05:47:10,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:10,950 INFO L470 AbstractCegarLoop]: Abstraction has 50527 states and 70810 transitions. [2021-11-03 05:47:10,950 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) [2021-11-03 05:47:10,950 INFO L276 IsEmpty]: Start isEmpty. Operand 50527 states and 70810 transitions. [2021-11-03 05:47:11,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-03 05:47:11,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:11,027 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] [2021-11-03 05:47:11,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-03 05:47:11,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-11-03 05:47:11,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:47:11,441 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)] === [2021-11-03 05:47:11,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:11,442 INFO L85 PathProgramCache]: Analyzing trace with hash 701803775, now seen corresponding path program 1 times [2021-11-03 05:47:11,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:11,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638375850] [2021-11-03 05:47:11,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:11,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:11,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:11,445 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:11,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 05:47:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:13,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:47:13,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:47:15,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:15,982 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:47:15,982 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:15,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638375850] [2021-11-03 05:47:15,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638375850] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:47:15,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [562749475] [2021-11-03 05:47:15,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:15,983 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:47:15,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:47:15,983 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:47:15,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-03 05:47:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:18,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 05:47:18,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:47:19,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:47:20,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [562749475] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:20,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:47:20,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 14 [2021-11-03 05:47:20,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444508579] [2021-11-03 05:47:20,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:47:20,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:20,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:47:20,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:47:20,424 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) [2021-11-03 05:47:22,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:22,917 INFO L93 Difference]: Finished difference Result 80069 states and 113181 transitions. [2021-11-03 05:47:22,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:47:22,919 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 [2021-11-03 05:47:22,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:23,056 INFO L225 Difference]: With dead ends: 80069 [2021-11-03 05:47:23,057 INFO L226 Difference]: Without dead ends: 51823 [2021-11-03 05:47:23,120 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:47:23,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51823 states. [2021-11-03 05:47:25,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51823 to 50563. [2021-11-03 05:47:25,115 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) [2021-11-03 05:47:25,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50563 states to 50563 states and 70846 transitions. [2021-11-03 05:47:25,223 INFO L78 Accepts]: Start accepts. Automaton has 50563 states and 70846 transitions. Word has length 139 [2021-11-03 05:47:25,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:25,223 INFO L470 AbstractCegarLoop]: Abstraction has 50563 states and 70846 transitions. [2021-11-03 05:47:25,223 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) [2021-11-03 05:47:25,223 INFO L276 IsEmpty]: Start isEmpty. Operand 50563 states and 70846 transitions. [2021-11-03 05:47:25,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-03 05:47:25,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:25,274 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] [2021-11-03 05:47:25,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:25,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-03 05:47:25,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:47:25,698 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)] === [2021-11-03 05:47:25,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:25,698 INFO L85 PathProgramCache]: Analyzing trace with hash -431319909, now seen corresponding path program 1 times [2021-11-03 05:47:25,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:25,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808656734] [2021-11-03 05:47:25,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:25,700 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:25,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:25,701 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:25,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 05:47:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:27,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:47:27,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:47:29,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:30,127 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:47:30,127 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:30,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808656734] [2021-11-03 05:47:30,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808656734] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:47:30,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [173221431] [2021-11-03 05:47:30,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:30,128 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:47:30,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:47:30,129 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:47:30,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-03 05:47:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:33,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:47:33,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:34,735 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:47:34,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:35,273 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:47:35,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [173221431] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:47:35,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011587905] [2021-11-03 05:47:35,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:35,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:47:35,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:47:35,276 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:47:35,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-03 05:47:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:37,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:47:37,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:47:39,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:47:40,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011587905] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:40,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-03 05:47:40,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [5, 5, 5, 5] total 15 [2021-11-03 05:47:40,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007161587] [2021-11-03 05:47:40,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 05:47:40,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:40,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 05:47:40,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:47:40,570 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) [2021-11-03 05:47:48,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:48,631 INFO L93 Difference]: Finished difference Result 101083 states and 141629 transitions. [2021-11-03 05:47:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:47:48,632 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 [2021-11-03 05:47:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:48,732 INFO L225 Difference]: With dead ends: 101083 [2021-11-03 05:47:48,733 INFO L226 Difference]: Without dead ends: 50552 [2021-11-03 05:47:48,797 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 [2021-11-03 05:47:48,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50552 states. [2021-11-03 05:47:50,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50552 to 50539. [2021-11-03 05:47:50,895 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) [2021-11-03 05:47:50,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50539 states to 50539 states and 70792 transitions. [2021-11-03 05:47:50,994 INFO L78 Accepts]: Start accepts. Automaton has 50539 states and 70792 transitions. Word has length 141 [2021-11-03 05:47:50,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:50,995 INFO L470 AbstractCegarLoop]: Abstraction has 50539 states and 70792 transitions. [2021-11-03 05:47:50,995 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) [2021-11-03 05:47:50,995 INFO L276 IsEmpty]: Start isEmpty. Operand 50539 states and 70792 transitions. [2021-11-03 05:47:51,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-03 05:47:51,039 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:51,040 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] [2021-11-03 05:47:51,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:51,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:51,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:51,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:47:51,641 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)] === [2021-11-03 05:47:51,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:51,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2097719592, now seen corresponding path program 1 times [2021-11-03 05:47:51,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:51,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206972612] [2021-11-03 05:47:51,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:51,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:51,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:51,644 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:51,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-03 05:47:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:54,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:47:54,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:55,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:47:55,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:47:56,148 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:56,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206972612] [2021-11-03 05:47:56,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206972612] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:47:56,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1408194232] [2021-11-03 05:47:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:56,148 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:47:56,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:47:56,149 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:47:56,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-03 05:47:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:59,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:47:59,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:48:00,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:48:01,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1408194232] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:01,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034450819] [2021-11-03 05:48:01,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:01,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:48:01,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:48:01,282 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:48:01,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-03 05:48:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:03,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:48:03,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:05,246 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:48:05,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:06,675 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:48:06,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034450819] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:06,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-03 05:48:06,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [5, 5, 5, 5] total 15 [2021-11-03 05:48:06,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821389660] [2021-11-03 05:48:06,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 05:48:06,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:48:06,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 05:48:06,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:48:06,677 INFO L87 Difference]: Start difference. First operand 50539 states and 70792 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) [2021-11-03 05:48:12,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:12,837 INFO L93 Difference]: Finished difference Result 101035 states and 141521 transitions. [2021-11-03 05:48:12,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:48:12,838 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 139 [2021-11-03 05:48:12,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:12,937 INFO L225 Difference]: With dead ends: 101035 [2021-11-03 05:48:12,937 INFO L226 Difference]: Without dead ends: 50528 [2021-11-03 05:48:13,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 815 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:48:13,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50528 states. [2021-11-03 05:48:15,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50528 to 50515. [2021-11-03 05:48:15,260 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) [2021-11-03 05:48:15,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50515 states to 50515 states and 70738 transitions. [2021-11-03 05:48:15,373 INFO L78 Accepts]: Start accepts. Automaton has 50515 states and 70738 transitions. Word has length 139 [2021-11-03 05:48:15,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:15,373 INFO L470 AbstractCegarLoop]: Abstraction has 50515 states and 70738 transitions. [2021-11-03 05:48:15,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-11-03 05:48:15,374 INFO L276 IsEmpty]: Start isEmpty. Operand 50515 states and 70738 transitions. [2021-11-03 05:48:15,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-03 05:48:15,413 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:15,414 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] [2021-11-03 05:48:15,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-03 05:48:15,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-11-03 05:48:15,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2021-11-03 05:48:16,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:16,015 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)] === [2021-11-03 05:48:16,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:16,015 INFO L85 PathProgramCache]: Analyzing trace with hash 133362063, now seen corresponding path program 1 times [2021-11-03 05:48:16,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:48:16,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538990113] [2021-11-03 05:48:16,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:16,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:48:16,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:48:16,018 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:48:16,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-03 05:48:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:18,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:48:18,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:48:19,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:48:20,752 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:48:20,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538990113] [2021-11-03 05:48:20,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538990113] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:20,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [482816849] [2021-11-03 05:48:20,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:20,753 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:20,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:48:20,762 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:48:20,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-03 05:48:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:24,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:48:24,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:48:25,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-03 05:48:26,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [482816849] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:26,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140754674] [2021-11-03 05:48:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:26,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:48:26,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:48:26,336 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:48:26,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5994a4-a4b7-40e7-908f-e82f7709c1ea/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-03 05:48:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:29,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 05:48:29,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:48:31,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 05:48:33,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140754674] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:33,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-03 05:48:33,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 9] imperfect sequences [5, 5, 5, 5] total 20 [2021-11-03 05:48:33,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240025544] [2021-11-03 05:48:33,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 05:48:33,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:48:33,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 05:48:33,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:48:33,295 INFO L87 Difference]: Start difference. First operand 50515 states and 70738 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) [2021-11-03 05:48:51,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:51,862 INFO L93 Difference]: Finished difference Result 172265 states and 240813 transitions. [2021-11-03 05:48:51,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:48:51,863 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 [2021-11-03 05:48:51,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:52,105 INFO L225 Difference]: With dead ends: 172265 [2021-11-03 05:48:52,105 INFO L226 Difference]: Without dead ends: 121782 [2021-11-03 05:48:52,183 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 842 GetRequests, 816 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2021-11-03 05:48:52,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121782 states.