./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:49:09,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:49:09,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:49:09,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:49:09,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:49:09,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:49:09,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:49:09,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:49:09,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:49:09,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:49:09,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:49:09,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:49:09,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:49:09,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:49:09,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:49:09,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:49:09,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:49:09,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:49:09,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:49:09,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:49:09,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:49:09,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:49:09,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:49:09,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:49:09,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:49:09,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:49:09,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:49:09,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:49:09,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:49:09,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:49:09,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:49:09,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:49:09,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:49:09,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:49:09,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:49:09,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:49:09,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:49:09,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:49:09,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:49:09,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:49:09,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:49:09,541 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-12 22:49:09,583 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:49:09,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:49:09,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:49:09,585 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:49:09,585 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:49:09,586 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:49:09,586 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:49:09,586 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:49:09,586 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:49:09,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:49:09,588 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:49:09,588 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:49:09,588 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:49:09,589 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:49:09,589 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:49:09,589 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:49:09,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 22:49:09,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 22:49:09,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:49:09,591 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:49:09,591 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:49:09,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:49:09,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:49:09,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:49:09,592 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 22:49:09,592 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 22:49:09,593 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 22:49:09,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:49:09,594 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:49:09,594 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:49:09,594 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:49:09,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:49:09,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:49:09,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:49:09,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:49:09,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:49:09,596 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:49:09,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:49:09,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:49:09,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:49:09,597 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_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd [2021-11-12 22:49:09,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:49:09,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:49:09,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:49:09,870 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:49:09,870 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:49:09,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2021-11-12 22:49:09,971 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/data/d66111958/ad4e9756a7f6412191e0257c78674926/FLAG287e95527 [2021-11-12 22:49:10,658 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:49:10,662 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2021-11-12 22:49:10,697 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/data/d66111958/ad4e9756a7f6412191e0257c78674926/FLAG287e95527 [2021-11-12 22:49:10,820 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/data/d66111958/ad4e9756a7f6412191e0257c78674926 [2021-11-12 22:49:10,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:49:10,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:49:10,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:49:10,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:49:10,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:49:10,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:49:10" (1/1) ... [2021-11-12 22:49:10,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a3b26b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:10, skipping insertion in model container [2021-11-12 22:49:10,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:49:10" (1/1) ... [2021-11-12 22:49:10,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:49:10,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:49:11,398 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_3e47060b-56ea-4c93-ad98-5f28401c87e0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[33021,33034] [2021-11-12 22:49:11,707 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_3e47060b-56ea-4c93-ad98-5f28401c87e0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[84583,84596] [2021-11-12 22:49:11,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:49:11,729 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) [2021-11-12 22:49:11,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@734b1940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:11, skipping insertion in model container [2021-11-12 22:49:11,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:49:11,730 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:49:11,735 INFO L158 Benchmark]: Toolchain (without parser) took 907.85ms. Allocated memory was 94.4MB in the beginning and 144.7MB in the end (delta: 50.3MB). Free memory was 57.1MB in the beginning and 98.3MB in the end (delta: -41.2MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2021-11-12 22:49:11,736 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 94.4MB. Free memory was 49.2MB in the beginning and 49.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:49:11,738 INFO L158 Benchmark]: CACSL2BoogieTranslator took 905.28ms. Allocated memory was 94.4MB in the beginning and 144.7MB in the end (delta: 50.3MB). Free memory was 56.9MB in the beginning and 98.3MB in the end (delta: -41.4MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2021-11-12 22:49:11,741 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 94.4MB. Free memory was 49.2MB in the beginning and 49.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 905.28ms. Allocated memory was 94.4MB in the beginning and 144.7MB in the end (delta: 50.3MB). Free memory was 56.9MB in the beginning and 98.3MB in the end (delta: -41.4MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:49:13,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:49:13,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:49:13,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:49:13,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:49:13,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:49:13,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:49:13,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:49:13,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:49:13,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:49:13,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:49:14,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:49:14,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:49:14,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:49:14,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:49:14,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:49:14,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:49:14,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:49:14,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:49:14,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:49:14,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:49:14,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:49:14,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:49:14,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:49:14,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:49:14,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:49:14,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:49:14,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:49:14,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:49:14,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:49:14,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:49:14,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:49:14,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:49:14,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:49:14,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:49:14,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:49:14,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:49:14,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:49:14,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:49:14,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:49:14,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:49:14,065 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-12 22:49:14,105 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:49:14,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:49:14,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:49:14,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:49:14,107 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:49:14,108 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:49:14,108 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:49:14,108 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:49:14,108 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:49:14,108 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:49:14,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 22:49:14,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 22:49:14,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:49:14,111 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:49:14,111 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:49:14,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:49:14,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:49:14,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:49:14,112 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 22:49:14,112 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 22:49:14,112 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 22:49:14,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:49:14,113 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:49:14,113 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:49:14,113 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:49:14,113 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:49:14,114 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:49:14,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:49:14,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:49:14,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:49:14,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:49:14,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:49:14,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:49:14,115 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:49:14,115 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:49:14,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:49:14,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:49:14,116 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_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd [2021-11-12 22:49:14,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:49:14,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:49:14,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:49:14,496 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:49:14,497 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:49:14,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2021-11-12 22:49:14,558 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/data/354c24f57/8d561cbb94044259853e5d5330905d3f/FLAGd45d6c609 [2021-11-12 22:49:15,233 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:49:15,234 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2021-11-12 22:49:15,254 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/data/354c24f57/8d561cbb94044259853e5d5330905d3f/FLAGd45d6c609 [2021-11-12 22:49:15,387 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/data/354c24f57/8d561cbb94044259853e5d5330905d3f [2021-11-12 22:49:15,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:49:15,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:49:15,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:49:15,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:49:15,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:49:15,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:49:15" (1/1) ... [2021-11-12 22:49:15,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e7c869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:15, skipping insertion in model container [2021-11-12 22:49:15,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:49:15" (1/1) ... [2021-11-12 22:49:15,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:49:15,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:49:16,035 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_3e47060b-56ea-4c93-ad98-5f28401c87e0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[33021,33034] [2021-11-12 22:49:16,338 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_3e47060b-56ea-4c93-ad98-5f28401c87e0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[84583,84596] [2021-11-12 22:49:16,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:49:16,364 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:49:16,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:49:16,415 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_3e47060b-56ea-4c93-ad98-5f28401c87e0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[33021,33034] [2021-11-12 22:49:16,557 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_3e47060b-56ea-4c93-ad98-5f28401c87e0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[84583,84596] [2021-11-12 22:49:16,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:49:16,588 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:49:16,625 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_3e47060b-56ea-4c93-ad98-5f28401c87e0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[33021,33034] [2021-11-12 22:49:16,732 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_3e47060b-56ea-4c93-ad98-5f28401c87e0/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[84583,84596] [2021-11-12 22:49:16,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:49:16,782 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:49:16,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:16 WrapperNode [2021-11-12 22:49:16,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:49:16,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:49:16,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:49:16,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:49:16,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:16" (1/1) ... [2021-11-12 22:49:16,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:16" (1/1) ... [2021-11-12 22:49:16,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:49:16,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:49:16,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:49:16,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:49:16,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:16" (1/1) ... [2021-11-12 22:49:16,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:16" (1/1) ... [2021-11-12 22:49:17,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:16" (1/1) ... [2021-11-12 22:49:17,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:16" (1/1) ... [2021-11-12 22:49:17,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:16" (1/1) ... [2021-11-12 22:49:17,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:16" (1/1) ... [2021-11-12 22:49:17,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:16" (1/1) ... [2021-11-12 22:49:17,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:49:17,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:49:17,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:49:17,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:49:17,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:16" (1/1) ... [2021-11-12 22:49:17,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:49:17,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:49:17,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:49:17,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:49:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:49:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:49:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:49:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:49:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 22:49:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 22:49:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:49:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:49:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:49:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 22:49:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:49:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:49:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:49:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:49:17,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:49:17,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:49:17,537 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 22:49:23,607 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:49:23,607 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-12 22:49:23,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:49:23 BoogieIcfgContainer [2021-11-12 22:49:23,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:49:23,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:49:23,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:49:23,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:49:23,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:49:15" (1/3) ... [2021-11-12 22:49:23,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77bbc3e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:49:23, skipping insertion in model container [2021-11-12 22:49:23,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:16" (2/3) ... [2021-11-12 22:49:23,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77bbc3e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:49:23, skipping insertion in model container [2021-11-12 22:49:23,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:49:23" (3/3) ... [2021-11-12 22:49:23,623 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test9-2.i [2021-11-12 22:49:23,629 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:49:23,630 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-12 22:49:23,684 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:49:23,691 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:49:23,691 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-12 22:49:23,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 2071 states, 1032 states have (on average 2.123062015503876) internal successors, (2191), 2065 states have internal predecessors, (2191), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-12 22:49:23,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:49:23,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:23,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:49:23,788 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:49:23,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:23,793 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-12 22:49:23,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:49:23,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611641756] [2021-11-12 22:49:23,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:23,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:49:23,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:49:23,814 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:49:23,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:49:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:23,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:49:23,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:49:24,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:49:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:24,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:49:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:24,112 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:49:24,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611641756] [2021-11-12 22:49:24,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611641756] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:49:24,113 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:49:24,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:49:24,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181645441] [2021-11-12 22:49:24,124 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:24,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:49:24,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:49:24,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:49:24,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:49:24,191 INFO L87 Difference]: Start difference. First operand has 2071 states, 1032 states have (on average 2.123062015503876) internal successors, (2191), 2065 states have internal predecessors, (2191), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:27,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:27,237 INFO L93 Difference]: Finished difference Result 2235 states and 3301 transitions. [2021-11-12 22:49:27,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:49:27,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-12 22:49:27,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:27,277 INFO L225 Difference]: With dead ends: 2235 [2021-11-12 22:49:27,277 INFO L226 Difference]: Without dead ends: 2233 [2021-11-12 22:49:27,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:49:27,282 INFO L933 BasicCegarLoop]: 2636 mSDtfsCounter, 1985 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2375.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.47ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2856.02ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:27,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2488 Valid, 2785 Invalid, 1151 Unknown, 0 Unchecked, 33.47ms Time], IncrementalHoareTripleChecker [16 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 2856.02ms Time] [2021-11-12 22:49:27,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2021-11-12 22:49:27,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2055. [2021-11-12 22:49:27,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2055 states, 1032 states have (on average 2.0416666666666665) internal successors, (2107), 2049 states have internal predecessors, (2107), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-12 22:49:27,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 3113 transitions. [2021-11-12 22:49:27,798 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 3113 transitions. Word has length 3 [2021-11-12 22:49:27,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:27,799 INFO L470 AbstractCegarLoop]: Abstraction has 2055 states and 3113 transitions. [2021-11-12 22:49:27,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:27,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 3113 transitions. [2021-11-12 22:49:27,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:49:27,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:27,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:49:27,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:49:28,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:49:28,015 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:49:28,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:28,016 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-12 22:49:28,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:49:28,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347839998] [2021-11-12 22:49:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:28,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:49:28,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:49:28,031 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:49:28,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:49:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:28,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:49:28,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:49:28,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:49:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:28,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:49:28,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:28,257 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:49:28,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347839998] [2021-11-12 22:49:28,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347839998] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:49:28,259 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:49:28,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 22:49:28,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912496116] [2021-11-12 22:49:28,260 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:28,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:49:28,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:49:28,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:49:28,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:49:28,264 INFO L87 Difference]: Start difference. First operand 2055 states and 3113 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:38,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:38,032 INFO L93 Difference]: Finished difference Result 3538 states and 5631 transitions. [2021-11-12 22:49:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:49:38,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-12 22:49:38,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:38,061 INFO L225 Difference]: With dead ends: 3538 [2021-11-12 22:49:38,061 INFO L226 Difference]: Without dead ends: 3538 [2021-11-12 22:49:38,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:49:38,063 INFO L933 BasicCegarLoop]: 3276 mSDtfsCounter, 4607 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8401.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5607 SdHoareTripleChecker+Valid, 4902 SdHoareTripleChecker+Invalid, 2394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.71ms SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9556.48ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:38,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5607 Valid, 4902 Invalid, 2394 Unknown, 0 Unchecked, 45.71ms Time], IncrementalHoareTripleChecker [518 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 9556.48ms Time] [2021-11-12 22:49:38,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2021-11-12 22:49:38,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 2090. [2021-11-12 22:49:38,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 1076 states have (on average 2.0315985130111525) internal successors, (2186), 2084 states have internal predecessors, (2186), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-12 22:49:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3192 transitions. [2021-11-12 22:49:38,400 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3192 transitions. Word has length 3 [2021-11-12 22:49:38,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:38,400 INFO L470 AbstractCegarLoop]: Abstraction has 2090 states and 3192 transitions. [2021-11-12 22:49:38,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:38,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3192 transitions. [2021-11-12 22:49:38,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 22:49:38,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:38,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:49:38,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:49:38,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:49:38,615 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:49:38,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:38,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-12 22:49:38,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:49:38,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758655410] [2021-11-12 22:49:38,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:38,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:49:38,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:49:38,619 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:49:38,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:49:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:38,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:49:38,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:49:38,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:49:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:38,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:49:38,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:38,803 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:49:38,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758655410] [2021-11-12 22:49:38,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758655410] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:49:38,807 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:49:38,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:49:38,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658195808] [2021-11-12 22:49:38,808 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:38,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:49:38,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:49:38,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:49:38,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:49:38,809 INFO L87 Difference]: Start difference. First operand 2090 states and 3192 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:41,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:41,409 INFO L93 Difference]: Finished difference Result 3257 states and 5376 transitions. [2021-11-12 22:49:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:49:41,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 22:49:41,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:41,435 INFO L225 Difference]: With dead ends: 3257 [2021-11-12 22:49:41,435 INFO L226 Difference]: Without dead ends: 3257 [2021-11-12 22:49:41,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:49:41,439 INFO L933 BasicCegarLoop]: 4868 mSDtfsCounter, 1806 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2139.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 7126 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.91ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2509.07ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:41,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2309 Valid, 7126 Invalid, 1180 Unknown, 0 Unchecked, 21.91ms Time], IncrementalHoareTripleChecker [51 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 2509.07ms Time] [2021-11-12 22:49:41,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3257 states. [2021-11-12 22:49:41,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3257 to 2043. [2021-11-12 22:49:41,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 1076 states have (on average 1.9851301115241635) internal successors, (2136), 2037 states have internal predecessors, (2136), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-12 22:49:41,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 3142 transitions. [2021-11-12 22:49:41,752 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 3142 transitions. Word has length 8 [2021-11-12 22:49:41,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:41,753 INFO L470 AbstractCegarLoop]: Abstraction has 2043 states and 3142 transitions. [2021-11-12 22:49:41,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:41,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 3142 transitions. [2021-11-12 22:49:41,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 22:49:41,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:41,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:49:41,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:49:41,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:49:41,971 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:49:41,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:41,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-12 22:49:41,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:49:41,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369902184] [2021-11-12 22:49:41,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:41,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:49:41,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:49:41,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:49:42,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:49:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:42,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:49:42,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:49:42,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:49:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:42,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:49:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:42,256 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:49:42,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369902184] [2021-11-12 22:49:42,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369902184] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:49:42,257 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:49:42,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 22:49:42,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909528381] [2021-11-12 22:49:42,257 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:42,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:49:42,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:49:42,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:49:42,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:49:42,258 INFO L87 Difference]: Start difference. First operand 2043 states and 3142 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-12 22:49:48,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:48,348 INFO L93 Difference]: Finished difference Result 3287 states and 5370 transitions. [2021-11-12 22:49:48,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:49:48,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 22:49:48,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:48,371 INFO L225 Difference]: With dead ends: 3287 [2021-11-12 22:49:48,372 INFO L226 Difference]: Without dead ends: 3287 [2021-11-12 22:49:48,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:49:48,373 INFO L933 BasicCegarLoop]: 5028 mSDtfsCounter, 3022 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5296.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3523 SdHoareTripleChecker+Valid, 7450 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.84ms SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5978.79ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:48,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3523 Valid, 7450 Invalid, 1700 Unknown, 0 Unchecked, 24.84ms Time], IncrementalHoareTripleChecker [514 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 5978.79ms Time] [2021-11-12 22:49:48,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2021-11-12 22:49:48,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 2033. [2021-11-12 22:49:48,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 1076 states have (on average 1.9730483271375465) internal successors, (2123), 2027 states have internal predecessors, (2123), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-12 22:49:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 3129 transitions. [2021-11-12 22:49:48,676 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 3129 transitions. Word has length 8 [2021-11-12 22:49:48,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:48,676 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 3129 transitions. [2021-11-12 22:49:48,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-12 22:49:48,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 3129 transitions. [2021-11-12 22:49:48,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 22:49:48,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:48,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:49:48,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:49:48,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:49:48,889 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr429REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:49:48,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:48,890 INFO L85 PathProgramCache]: Analyzing trace with hash 874110197, now seen corresponding path program 1 times [2021-11-12 22:49:48,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:49:48,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110729000] [2021-11-12 22:49:48,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:48,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:49:48,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:49:48,891 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:49:48,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:49:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:49,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:49:49,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:49:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:49,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:49:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:49,168 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:49:49,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110729000] [2021-11-12 22:49:49,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110729000] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:49:49,168 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:49:49,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:49:49,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720184110] [2021-11-12 22:49:49,169 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:49,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:49:49,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:49:49,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:49:49,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:49:49,170 INFO L87 Difference]: Start difference. First operand 2033 states and 3129 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:49,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:49,493 INFO L93 Difference]: Finished difference Result 3496 states and 5626 transitions. [2021-11-12 22:49:49,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:49:49,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-12 22:49:49,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:49,518 INFO L225 Difference]: With dead ends: 3496 [2021-11-12 22:49:49,519 INFO L226 Difference]: Without dead ends: 3496 [2021-11-12 22:49:49,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:49:49,520 INFO L933 BasicCegarLoop]: 3608 mSDtfsCounter, 1560 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 227.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 6497 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.49ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 266.72ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:49,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2062 Valid, 6497 Invalid, 119 Unknown, 0 Unchecked, 11.49ms Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 266.72ms Time] [2021-11-12 22:49:49,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2021-11-12 22:49:49,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 3203. [2021-11-12 22:49:49,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 1746 states have (on average 1.9558991981672393) internal successors, (3415), 3197 states have internal predecessors, (3415), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:49:49,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 5421 transitions. [2021-11-12 22:49:49,910 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 5421 transitions. Word has length 11 [2021-11-12 22:49:49,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:49,911 INFO L470 AbstractCegarLoop]: Abstraction has 3203 states and 5421 transitions. [2021-11-12 22:49:49,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:49,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 5421 transitions. [2021-11-12 22:49:49,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 22:49:49,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:49,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:49:49,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:49:50,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:49:50,133 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:49:50,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:50,134 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2021-11-12 22:49:50,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:49:50,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157085213] [2021-11-12 22:49:50,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:50,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:49:50,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:49:50,135 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:49:50,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:49:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:50,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:49:50,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:49:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:50,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:49:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:50,317 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:49:50,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157085213] [2021-11-12 22:49:50,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157085213] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:49:50,318 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:49:50,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:49:50,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875497467] [2021-11-12 22:49:50,318 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:50,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:49:50,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:49:50,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:49:50,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:49:50,320 INFO L87 Difference]: Start difference. First operand 3203 states and 5421 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:51,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:51,056 INFO L93 Difference]: Finished difference Result 3357 states and 5561 transitions. [2021-11-12 22:49:51,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:49:51,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-12 22:49:51,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:51,076 INFO L225 Difference]: With dead ends: 3357 [2021-11-12 22:49:51,077 INFO L226 Difference]: Without dead ends: 3357 [2021-11-12 22:49:51,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:49:51,078 INFO L933 BasicCegarLoop]: 3204 mSDtfsCounter, 2788 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 582.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3288 SdHoareTripleChecker+Valid, 4523 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.52ms SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 691.83ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:51,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3288 Valid, 4523 Invalid, 513 Unknown, 0 Unchecked, 7.52ms Time], IncrementalHoareTripleChecker [500 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 691.83ms Time] [2021-11-12 22:49:51,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2021-11-12 22:49:51,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 3143. [2021-11-12 22:49:51,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3143 states, 1710 states have (on average 1.946783625730994) internal successors, (3329), 3137 states have internal predecessors, (3329), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:49:51,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 5335 transitions. [2021-11-12 22:49:51,379 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 5335 transitions. Word has length 13 [2021-11-12 22:49:51,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:51,379 INFO L470 AbstractCegarLoop]: Abstraction has 3143 states and 5335 transitions. [2021-11-12 22:49:51,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:51,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 5335 transitions. [2021-11-12 22:49:51,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 22:49:51,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:51,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:49:51,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:49:51,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:49:51,592 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr534ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:49:51,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:51,593 INFO L85 PathProgramCache]: Analyzing trace with hash 240246254, now seen corresponding path program 1 times [2021-11-12 22:49:51,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:49:51,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915019265] [2021-11-12 22:49:51,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:51,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:49:51,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:49:51,594 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:49:51,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:49:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:51,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:49:51,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:49:51,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:49:51,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:49:51,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:49:51,821 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-12 22:49:51,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-12 22:49:51,878 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-12 22:49:51,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-12 22:49:51,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:51,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:49:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:51,975 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:49:51,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915019265] [2021-11-12 22:49:51,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915019265] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:49:51,975 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:49:51,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:49:51,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581881804] [2021-11-12 22:49:51,975 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:51,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:49:51,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:49:51,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:49:51,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:49:51,976 INFO L87 Difference]: Start difference. First operand 3143 states and 5335 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:56,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:56,184 INFO L93 Difference]: Finished difference Result 5460 states and 9683 transitions. [2021-11-12 22:49:56,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:49:56,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-12 22:49:56,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:56,219 INFO L225 Difference]: With dead ends: 5460 [2021-11-12 22:49:56,220 INFO L226 Difference]: Without dead ends: 5460 [2021-11-12 22:49:56,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:49:56,221 INFO L933 BasicCegarLoop]: 3461 mSDtfsCounter, 2664 mSDsluCounter, 5813 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3450.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3164 SdHoareTripleChecker+Valid, 9274 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.24ms SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4075.30ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:56,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3164 Valid, 9274 Invalid, 1222 Unknown, 0 Unchecked, 22.24ms Time], IncrementalHoareTripleChecker [504 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 4075.30ms Time] [2021-11-12 22:49:56,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2021-11-12 22:49:56,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 3142. [2021-11-12 22:49:56,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 1709 states have (on average 1.9467524868344062) internal successors, (3327), 3136 states have internal predecessors, (3327), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:49:56,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 5333 transitions. [2021-11-12 22:49:56,713 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 5333 transitions. Word has length 14 [2021-11-12 22:49:56,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:56,713 INFO L470 AbstractCegarLoop]: Abstraction has 3142 states and 5333 transitions. [2021-11-12 22:49:56,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:56,713 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 5333 transitions. [2021-11-12 22:49:56,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 22:49:56,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:56,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:49:56,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:49:56,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:49:56,927 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:49:56,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:56,929 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-12 22:49:56,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:49:56,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805476698] [2021-11-12 22:49:56,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:56,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:49:56,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:49:56,930 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:49:56,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:49:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:57,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:49:57,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:49:57,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:57,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:49:57,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:57,125 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:49:57,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805476698] [2021-11-12 22:49:57,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805476698] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:49:57,126 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:49:57,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:49:57,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865480224] [2021-11-12 22:49:57,126 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:57,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:49:57,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:49:57,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:49:57,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:49:57,128 INFO L87 Difference]: Start difference. First operand 3142 states and 5333 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:57,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:57,219 INFO L93 Difference]: Finished difference Result 3082 states and 5247 transitions. [2021-11-12 22:49:57,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:49:57,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-12 22:49:57,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:57,230 INFO L225 Difference]: With dead ends: 3082 [2021-11-12 22:49:57,230 INFO L226 Difference]: Without dead ends: 3082 [2021-11-12 22:49:57,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:49:57,231 INFO L933 BasicCegarLoop]: 2956 mSDtfsCounter, 1935 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 4010 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.89ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:57,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2438 Valid, 4010 Invalid, 14 Unknown, 0 Unchecked, 6.62ms Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 19.89ms Time] [2021-11-12 22:49:57,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2021-11-12 22:49:57,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 3082. [2021-11-12 22:49:57,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3082 states, 1673 states have (on average 1.9372384937238494) internal successors, (3241), 3076 states have internal predecessors, (3241), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:49:57,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 5247 transitions. [2021-11-12 22:49:57,600 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 5247 transitions. Word has length 18 [2021-11-12 22:49:57,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:57,601 INFO L470 AbstractCegarLoop]: Abstraction has 3082 states and 5247 transitions. [2021-11-12 22:49:57,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:57,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 5247 transitions. [2021-11-12 22:49:57,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 22:49:57,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:57,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:49:57,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:49:57,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:49:57,815 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:49:57,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:57,815 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-12 22:49:57,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:49:57,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840706548] [2021-11-12 22:49:57,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:57,816 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:49:57,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:49:57,817 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:49:57,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:49:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:57,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:49:57,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:49:58,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:58,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:49:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:58,064 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:49:58,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840706548] [2021-11-12 22:49:58,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840706548] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:49:58,064 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:49:58,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 22:49:58,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162749870] [2021-11-12 22:49:58,065 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:58,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:49:58,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:49:58,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:49:58,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:49:58,067 INFO L87 Difference]: Start difference. First operand 3082 states and 5247 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-11-12 22:49:58,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:58,975 INFO L93 Difference]: Finished difference Result 3054 states and 5191 transitions. [2021-11-12 22:49:58,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:49:58,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-12 22:49:58,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:58,983 INFO L225 Difference]: With dead ends: 3054 [2021-11-12 22:49:58,983 INFO L226 Difference]: Without dead ends: 3054 [2021-11-12 22:49:58,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:49:58,984 INFO L933 BasicCegarLoop]: 2911 mSDtfsCounter, 3802 mSDsluCounter, 3431 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 711.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4305 SdHoareTripleChecker+Valid, 6342 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.11ms SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 835.96ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:58,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4305 Valid, 6342 Invalid, 579 Unknown, 0 Unchecked, 16.11ms Time], IncrementalHoareTripleChecker [545 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 835.96ms Time] [2021-11-12 22:49:58,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2021-11-12 22:49:59,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 3052. [2021-11-12 22:49:59,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3052 states, 1657 states have (on average 1.9209414604707302) internal successors, (3183), 3046 states have internal predecessors, (3183), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:49:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 5189 transitions. [2021-11-12 22:49:59,334 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 5189 transitions. Word has length 20 [2021-11-12 22:49:59,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:59,335 INFO L470 AbstractCegarLoop]: Abstraction has 3052 states and 5189 transitions. [2021-11-12 22:49:59,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-11-12 22:49:59,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 5189 transitions. [2021-11-12 22:49:59,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-12 22:49:59,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:59,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:49:59,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:49:59,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:49:59,549 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:49:59,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:59,550 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-12 22:49:59,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:49:59,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188928352] [2021-11-12 22:49:59,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:59,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:49:59,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:49:59,551 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:49:59,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:49:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:59,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:49:59,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:49:59,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:49:59,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:59,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:49:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:59,939 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:49:59,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188928352] [2021-11-12 22:49:59,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188928352] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:49:59,940 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:49:59,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:49:59,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808895718] [2021-11-12 22:49:59,940 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:49:59,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:49:59,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:49:59,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:49:59,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:49:59,941 INFO L87 Difference]: Start difference. First operand 3052 states and 5189 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-12 22:50:04,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:04,043 INFO L93 Difference]: Finished difference Result 5485 states and 9686 transitions. [2021-11-12 22:50:04,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:50:04,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2021-11-12 22:50:04,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:04,063 INFO L225 Difference]: With dead ends: 5485 [2021-11-12 22:50:04,063 INFO L226 Difference]: Without dead ends: 5485 [2021-11-12 22:50:04,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:50:04,064 INFO L933 BasicCegarLoop]: 2990 mSDtfsCounter, 3447 mSDsluCounter, 3517 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3373.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3447 SdHoareTripleChecker+Valid, 6507 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.51ms SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3989.25ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:04,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3447 Valid, 6507 Invalid, 2890 Unknown, 0 Unchecked, 21.51ms Time], IncrementalHoareTripleChecker [1019 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 3989.25ms Time] [2021-11-12 22:50:04,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5485 states. [2021-11-12 22:50:04,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5485 to 3048. [2021-11-12 22:50:04,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 1657 states have (on average 1.916113458056729) internal successors, (3175), 3042 states have internal predecessors, (3175), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:50:04,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 5181 transitions. [2021-11-12 22:50:04,535 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 5181 transitions. Word has length 34 [2021-11-12 22:50:04,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:04,536 INFO L470 AbstractCegarLoop]: Abstraction has 3048 states and 5181 transitions. [2021-11-12 22:50:04,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-12 22:50:04,536 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 5181 transitions. [2021-11-12 22:50:04,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-12 22:50:04,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:04,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:04,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:04,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:04,749 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:50:04,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:04,750 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-12 22:50:04,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:04,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105620082] [2021-11-12 22:50:04,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:04,751 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:04,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:04,752 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:04,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:50:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:04,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:50:04,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:04,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:50:05,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:05,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:05,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:05,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105620082] [2021-11-12 22:50:05,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105620082] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:05,612 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:05,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 22:50:05,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086463980] [2021-11-12 22:50:05,613 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:05,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:50:05,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:05,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:50:05,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:50:05,614 INFO L87 Difference]: Start difference. First operand 3048 states and 5181 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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) [2021-11-12 22:50:17,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:17,304 INFO L93 Difference]: Finished difference Result 5539 states and 9703 transitions. [2021-11-12 22:50:17,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:50:17,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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 34 [2021-11-12 22:50:17,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:17,325 INFO L225 Difference]: With dead ends: 5539 [2021-11-12 22:50:17,325 INFO L226 Difference]: Without dead ends: 5539 [2021-11-12 22:50:17,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:50:17,326 INFO L933 BasicCegarLoop]: 5128 mSDtfsCounter, 4551 mSDsluCounter, 7423 mSDsCounter, 0 mSdLazyCounter, 3213 mSolverCounterSat, 1511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10165.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4551 SdHoareTripleChecker+Valid, 12551 SdHoareTripleChecker+Invalid, 4724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.85ms SdHoareTripleChecker+Time, 1511 IncrementalHoareTripleChecker+Valid, 3213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11478.27ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:17,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4551 Valid, 12551 Invalid, 4724 Unknown, 0 Unchecked, 33.85ms Time], IncrementalHoareTripleChecker [1511 Valid, 3213 Invalid, 0 Unknown, 0 Unchecked, 11478.27ms Time] [2021-11-12 22:50:17,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5539 states. [2021-11-12 22:50:17,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5539 to 3044. [2021-11-12 22:50:17,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3044 states, 1657 states have (on average 1.911285455642728) internal successors, (3167), 3038 states have internal predecessors, (3167), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:50:17,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3044 states to 3044 states and 5173 transitions. [2021-11-12 22:50:17,935 INFO L78 Accepts]: Start accepts. Automaton has 3044 states and 5173 transitions. Word has length 34 [2021-11-12 22:50:17,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:17,936 INFO L470 AbstractCegarLoop]: Abstraction has 3044 states and 5173 transitions. [2021-11-12 22:50:17,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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) [2021-11-12 22:50:17,936 INFO L276 IsEmpty]: Start isEmpty. Operand 3044 states and 5173 transitions. [2021-11-12 22:50:17,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-12 22:50:17,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:17,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:17,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:18,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:18,149 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:50:18,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:18,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-12 22:50:18,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:18,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837549314] [2021-11-12 22:50:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:18,152 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:18,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:18,153 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:18,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:50:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:18,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:50:18,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:18,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:18,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:18,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:18,572 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:18,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837549314] [2021-11-12 22:50:18,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837549314] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:18,572 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:18,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 22:50:18,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810780090] [2021-11-12 22:50:18,572 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:18,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:50:18,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:18,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:50:18,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:50:18,573 INFO L87 Difference]: Start difference. First operand 3044 states and 5173 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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) [2021-11-12 22:50:18,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:18,670 INFO L93 Difference]: Finished difference Result 3032 states and 5153 transitions. [2021-11-12 22:50:18,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:50:18,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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 52 [2021-11-12 22:50:18,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:18,681 INFO L225 Difference]: With dead ends: 3032 [2021-11-12 22:50:18,681 INFO L226 Difference]: Without dead ends: 3032 [2021-11-12 22:50:18,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:50:18,684 INFO L933 BasicCegarLoop]: 2905 mSDtfsCounter, 1882 mSDsluCounter, 3415 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2385 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.58ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.44ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:18,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2385 Valid, 6320 Invalid, 43 Unknown, 0 Unchecked, 8.58ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 38.44ms Time] [2021-11-12 22:50:18,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-11-12 22:50:18,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 3032. [2021-11-12 22:50:18,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3032 states, 1645 states have (on average 1.9130699088145897) internal successors, (3147), 3026 states have internal predecessors, (3147), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:50:18,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3032 states to 3032 states and 5153 transitions. [2021-11-12 22:50:18,928 INFO L78 Accepts]: Start accepts. Automaton has 3032 states and 5153 transitions. Word has length 52 [2021-11-12 22:50:18,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:18,929 INFO L470 AbstractCegarLoop]: Abstraction has 3032 states and 5153 transitions. [2021-11-12 22:50:18,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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) [2021-11-12 22:50:18,929 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 5153 transitions. [2021-11-12 22:50:18,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-12 22:50:18,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:18,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:18,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:19,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:19,143 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:50:19,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:19,144 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-12 22:50:19,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:19,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842965194] [2021-11-12 22:50:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:19,145 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:19,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:19,146 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:19,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 22:50:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:19,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:50:19,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:19,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:50:19,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:50:20,146 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-12 22:50:20,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-12 22:50:20,153 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:50:20,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-12 22:50:20,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:20,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:25,274 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:25,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842965194] [2021-11-12 22:50:25,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842965194] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:25,274 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:25,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 22:50:25,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212300705] [2021-11-12 22:50:25,274 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:25,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:50:25,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:25,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:50:25,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-12 22:50:25,276 INFO L87 Difference]: Start difference. First operand 3032 states and 5153 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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) [2021-11-12 22:50:38,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:38,012 INFO L93 Difference]: Finished difference Result 5433 states and 9586 transitions. [2021-11-12 22:50:38,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:50:38,012 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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 60 [2021-11-12 22:50:38,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:38,031 INFO L225 Difference]: With dead ends: 5433 [2021-11-12 22:50:38,031 INFO L226 Difference]: Without dead ends: 5433 [2021-11-12 22:50:38,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-12 22:50:38,032 INFO L933 BasicCegarLoop]: 4663 mSDtfsCounter, 3042 mSDsluCounter, 5026 mSDsCounter, 0 mSdLazyCounter, 3688 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10832.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4046 SdHoareTripleChecker+Valid, 9689 SdHoareTripleChecker+Invalid, 6015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.25ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2272 IncrementalHoareTripleChecker+Unchecked, 12519.31ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:38,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4046 Valid, 9689 Invalid, 6015 Unknown, 0 Unchecked, 46.25ms Time], IncrementalHoareTripleChecker [55 Valid, 3688 Invalid, 0 Unknown, 2272 Unchecked, 12519.31ms Time] [2021-11-12 22:50:38,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2021-11-12 22:50:38,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 3010. [2021-11-12 22:50:38,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 1655 states have (on average 1.8930513595166163) internal successors, (3133), 3004 states have internal predecessors, (3133), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:50:38,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 5139 transitions. [2021-11-12 22:50:38,641 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 5139 transitions. Word has length 60 [2021-11-12 22:50:38,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:38,641 INFO L470 AbstractCegarLoop]: Abstraction has 3010 states and 5139 transitions. [2021-11-12 22:50:38,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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) [2021-11-12 22:50:38,642 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 5139 transitions. [2021-11-12 22:50:38,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-12 22:50:38,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:38,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:38,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:38,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:38,857 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:50:38,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:38,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-12 22:50:38,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:38,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978724433] [2021-11-12 22:50:38,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:38,859 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:38,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:38,860 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:38,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 22:50:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:39,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:50:39,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:39,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:39,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:39,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-12 22:50:39,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:39,730 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:39,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978724433] [2021-11-12 22:50:39,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978724433] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:39,730 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:39,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 22:50:39,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569066127] [2021-11-12 22:50:39,730 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:39,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:50:39,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:39,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:50:39,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:50:39,732 INFO L87 Difference]: Start difference. First operand 3010 states and 5139 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-11-12 22:50:44,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:44,906 INFO L93 Difference]: Finished difference Result 3008 states and 5137 transitions. [2021-11-12 22:50:44,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:50:44,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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 62 [2021-11-12 22:50:44,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:44,914 INFO L225 Difference]: With dead ends: 3008 [2021-11-12 22:50:44,914 INFO L226 Difference]: Without dead ends: 3008 [2021-11-12 22:50:44,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:50:44,915 INFO L933 BasicCegarLoop]: 2576 mSDtfsCounter, 4833 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 1022 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4348.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5336 SdHoareTripleChecker+Valid, 4125 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.25ms SdHoareTripleChecker+Time, 1022 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5094.49ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:44,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5336 Valid, 4125 Invalid, 1959 Unknown, 0 Unchecked, 17.25ms Time], IncrementalHoareTripleChecker [1022 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 5094.49ms Time] [2021-11-12 22:50:44,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2021-11-12 22:50:45,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2021-11-12 22:50:45,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 1655 states have (on average 1.8918429003021149) internal successors, (3131), 3002 states have internal predecessors, (3131), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:50:45,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 5137 transitions. [2021-11-12 22:50:45,208 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 5137 transitions. Word has length 62 [2021-11-12 22:50:45,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:45,209 INFO L470 AbstractCegarLoop]: Abstraction has 3008 states and 5137 transitions. [2021-11-12 22:50:45,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-11-12 22:50:45,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 5137 transitions. [2021-11-12 22:50:45,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 22:50:45,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:45,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:45,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:45,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:45,423 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:50:45,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:45,424 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-12 22:50:45,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:45,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307739366] [2021-11-12 22:50:45,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:45,425 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:45,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:45,426 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:45,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 22:50:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:45,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:50:45,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:45,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:50:45,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:50:45,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-12 22:50:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:45,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:46,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:46,012 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:46,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307739366] [2021-11-12 22:50:46,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307739366] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:46,012 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:46,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 22:50:46,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199781299] [2021-11-12 22:50:46,013 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:46,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:50:46,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:46,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:50:46,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:50:46,014 INFO L87 Difference]: Start difference. First operand 3008 states and 5137 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-11-12 22:50:48,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:48,765 INFO L93 Difference]: Finished difference Result 3007 states and 5136 transitions. [2021-11-12 22:50:48,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:50:48,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2021-11-12 22:50:48,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:48,773 INFO L225 Difference]: With dead ends: 3007 [2021-11-12 22:50:48,773 INFO L226 Difference]: Without dead ends: 3007 [2021-11-12 22:50:48,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:50:48,774 INFO L933 BasicCegarLoop]: 2869 mSDtfsCounter, 4 mSDsluCounter, 7365 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2314.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10234 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.46ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2666.13ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:48,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 10234 Invalid, 1248 Unknown, 0 Unchecked, 13.46ms Time], IncrementalHoareTripleChecker [1 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 2666.13ms Time] [2021-11-12 22:50:48,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2021-11-12 22:50:49,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 3007. [2021-11-12 22:50:49,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 1655 states have (on average 1.891238670694864) internal successors, (3130), 3001 states have internal predecessors, (3130), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:50:49,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 5136 transitions. [2021-11-12 22:50:49,053 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 5136 transitions. Word has length 65 [2021-11-12 22:50:49,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:49,053 INFO L470 AbstractCegarLoop]: Abstraction has 3007 states and 5136 transitions. [2021-11-12 22:50:49,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-11-12 22:50:49,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 5136 transitions. [2021-11-12 22:50:49,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 22:50:49,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:49,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:49,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:49,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:49,268 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:50:49,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:49,268 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-12 22:50:49,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:49,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758119526] [2021-11-12 22:50:49,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:49,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:49,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:49,270 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:49,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 22:50:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:49,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:50:49,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:49,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:50:49,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-12 22:50:49,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 22:50:49,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-12 22:50:49,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-12 22:50:49,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:49,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:50,078 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:50,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758119526] [2021-11-12 22:50:50,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758119526] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:50,079 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:50,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 22:50:50,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265541943] [2021-11-12 22:50:50,079 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:50,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:50:50,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:50,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:50:50,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:50:50,080 INFO L87 Difference]: Start difference. First operand 3007 states and 5136 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2021-11-12 22:50:57,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:57,224 INFO L93 Difference]: Finished difference Result 3006 states and 5135 transitions. [2021-11-12 22:50:57,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:50:57,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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 65 [2021-11-12 22:50:57,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:57,238 INFO L225 Difference]: With dead ends: 3006 [2021-11-12 22:50:57,238 INFO L226 Difference]: Without dead ends: 3006 [2021-11-12 22:50:57,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:50:57,239 INFO L933 BasicCegarLoop]: 2869 mSDtfsCounter, 3 mSDsluCounter, 9855 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6325.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12724 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.59ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7026.06ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:57,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 12724 Invalid, 1627 Unknown, 0 Unchecked, 18.59ms Time], IncrementalHoareTripleChecker [2 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 7026.06ms Time] [2021-11-12 22:50:57,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2021-11-12 22:50:57,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 3006. [2021-11-12 22:50:57,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 1654 states have (on average 1.8917775090689237) internal successors, (3129), 3000 states have internal predecessors, (3129), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 22:50:57,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 5135 transitions. [2021-11-12 22:50:57,553 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 5135 transitions. Word has length 65 [2021-11-12 22:50:57,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:57,553 INFO L470 AbstractCegarLoop]: Abstraction has 3006 states and 5135 transitions. [2021-11-12 22:50:57,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2021-11-12 22:50:57,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 5135 transitions. [2021-11-12 22:50:57,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-12 22:50:57,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:57,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:57,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:57,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:57,768 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:50:57,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:57,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1522422575, now seen corresponding path program 1 times [2021-11-12 22:50:57,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:57,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138889365] [2021-11-12 22:50:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:57,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:57,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:57,771 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:57,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 22:50:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:58,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:50:58,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:58,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:58,378 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:58,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138889365] [2021-11-12 22:50:58,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138889365] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:50:58,379 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:50:58,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:50:58,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398681764] [2021-11-12 22:50:58,379 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:50:58,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:50:58,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:50:58,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:50:58,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:50:58,381 INFO L87 Difference]: Start difference. First operand 3006 states and 5135 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:50:58,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:50:58,547 INFO L93 Difference]: Finished difference Result 3016 states and 5148 transitions. [2021-11-12 22:50:58,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:50:58,548 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-12 22:50:58,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:50:58,571 INFO L225 Difference]: With dead ends: 3016 [2021-11-12 22:50:58,571 INFO L226 Difference]: Without dead ends: 3016 [2021-11-12 22:50:58,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:50:58,573 INFO L933 BasicCegarLoop]: 2869 mSDtfsCounter, 9 mSDsluCounter, 5732 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8601 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.02ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.68ms IncrementalHoareTripleChecker+Time [2021-11-12 22:50:58,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 8601 Invalid, 35 Unknown, 0 Unchecked, 14.02ms Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 86.68ms Time] [2021-11-12 22:50:58,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2021-11-12 22:50:58,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 3016. [2021-11-12 22:50:58,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 1662 states have (on average 1.8898916967509025) internal successors, (3141), 3009 states have internal predecessors, (3141), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-12 22:50:58,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 5148 transitions. [2021-11-12 22:50:58,947 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 5148 transitions. Word has length 73 [2021-11-12 22:50:58,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:50:58,948 INFO L470 AbstractCegarLoop]: Abstraction has 3016 states and 5148 transitions. [2021-11-12 22:50:58,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:50:58,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 5148 transitions. [2021-11-12 22:50:58,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-12 22:50:58,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:50:58,952 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:50:58,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 22:50:59,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:50:59,165 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:50:59,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:50:59,165 INFO L85 PathProgramCache]: Analyzing trace with hash 142057039, now seen corresponding path program 1 times [2021-11-12 22:50:59,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:50:59,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686441425] [2021-11-12 22:50:59,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:59,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:50:59,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:50:59,167 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:50:59,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 22:50:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:50:59,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:50:59,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:50:59,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:59,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:50:59,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:50:59,903 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:50:59,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686441425] [2021-11-12 22:50:59,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686441425] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:50:59,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [541281895] [2021-11-12 22:50:59,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:50:59,903 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:50:59,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:50:59,905 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:50:59,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-12 22:51:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:00,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:51:00,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:00,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:00,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:00,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:00,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [541281895] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:51:00,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782490450] [2021-11-12 22:51:00,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:00,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:51:00,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:51:00,516 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:51:00,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-12 22:51:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:00,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:51:00,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:00,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:01,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:01,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782490450] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:51:01,194 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:51:01,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-12 22:51:01,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515520465] [2021-11-12 22:51:01,197 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:51:01,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:51:01,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:01,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:51:01,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:51:01,199 INFO L87 Difference]: Start difference. First operand 3016 states and 5148 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 22:51:01,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:01,745 INFO L93 Difference]: Finished difference Result 3030 states and 5165 transitions. [2021-11-12 22:51:01,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:51:01,746 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-12 22:51:01,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:01,758 INFO L225 Difference]: With dead ends: 3030 [2021-11-12 22:51:01,758 INFO L226 Difference]: Without dead ends: 3024 [2021-11-12 22:51:01,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:51:01,759 INFO L933 BasicCegarLoop]: 2870 mSDtfsCounter, 39 mSDsluCounter, 14328 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 201.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 17198 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.50ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 228.53ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:01,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 17198 Invalid, 135 Unknown, 0 Unchecked, 19.50ms Time], IncrementalHoareTripleChecker [29 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 228.53ms Time] [2021-11-12 22:51:01,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2021-11-12 22:51:02,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 3022. [2021-11-12 22:51:02,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 1668 states have (on average 1.8872901678657075) internal successors, (3148), 3015 states have internal predecessors, (3148), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-12 22:51:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 5155 transitions. [2021-11-12 22:51:02,132 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 5155 transitions. Word has length 75 [2021-11-12 22:51:02,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:02,133 INFO L470 AbstractCegarLoop]: Abstraction has 3022 states and 5155 transitions. [2021-11-12 22:51:02,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 22:51:02,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 5155 transitions. [2021-11-12 22:51:02,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-12 22:51:02,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:02,137 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:02,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-12 22:51:02,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-12 22:51:02,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-11-12 22:51:02,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:51:02,751 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:51:02,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:02,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2028559503, now seen corresponding path program 2 times [2021-11-12 22:51:02,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:02,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958642130] [2021-11-12 22:51:02,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:51:02,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:02,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:02,753 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:02,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 22:51:03,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:51:03,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:51:03,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 22:51:03,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:03,333 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:03,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:03,790 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:03,790 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:03,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958642130] [2021-11-12 22:51:03,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958642130] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:51:03,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1622090138] [2021-11-12 22:51:03,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:51:03,791 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:51:03,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:51:03,792 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:51:03,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-12 22:51:04,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:51:04,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:51:04,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 22:51:04,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:04,656 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:04,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:04,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1622090138] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:51:04,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305236358] [2021-11-12 22:51:04,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:51:04,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:51:04,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:51:04,917 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:51:04,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-12 22:51:17,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:51:17,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:51:17,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:51:17,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:17,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:18,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305236358] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:51:18,320 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:51:18,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 26 [2021-11-12 22:51:18,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854751929] [2021-11-12 22:51:18,321 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:51:18,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-12 22:51:18,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:18,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-12 22:51:18,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2021-11-12 22:51:18,323 INFO L87 Difference]: Start difference. First operand 3022 states and 5155 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 22:51:20,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:20,076 INFO L93 Difference]: Finished difference Result 3048 states and 5190 transitions. [2021-11-12 22:51:20,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-12 22:51:20,077 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-12 22:51:20,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:20,086 INFO L225 Difference]: With dead ends: 3048 [2021-11-12 22:51:20,087 INFO L226 Difference]: Without dead ends: 3042 [2021-11-12 22:51:20,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=706, Invalid=1364, Unknown=0, NotChecked=0, Total=2070 [2021-11-12 22:51:20,088 INFO L933 BasicCegarLoop]: 2873 mSDtfsCounter, 71 mSDsluCounter, 25815 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 540.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 28688 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.17ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 615.05ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:20,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 28688 Invalid, 390 Unknown, 0 Unchecked, 36.17ms Time], IncrementalHoareTripleChecker [65 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 615.05ms Time] [2021-11-12 22:51:20,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2021-11-12 22:51:20,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 3034. [2021-11-12 22:51:20,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 1680 states have (on average 1.8827380952380952) internal successors, (3163), 3027 states have internal predecessors, (3163), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-12 22:51:20,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 5170 transitions. [2021-11-12 22:51:20,371 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 5170 transitions. Word has length 79 [2021-11-12 22:51:20,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:20,371 INFO L470 AbstractCegarLoop]: Abstraction has 3034 states and 5170 transitions. [2021-11-12 22:51:20,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 22:51:20,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 5170 transitions. [2021-11-12 22:51:20,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-12 22:51:20,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:20,373 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:20,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-12 22:51:20,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-12 22:51:20,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-12 22:51:20,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:20,987 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 22:51:20,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:20,987 INFO L85 PathProgramCache]: Analyzing trace with hash 214006031, now seen corresponding path program 3 times [2021-11-12 22:51:20,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:20,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943991002] [2021-11-12 22:51:20,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:51:20,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:20,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:20,990 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:21,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-12 22:51:21,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 22:51:21,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:51:21,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 22:51:21,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:22,311 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:22,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:23,939 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:23,939 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:23,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943991002] [2021-11-12 22:51:23,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943991002] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:51:23,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [565280119] [2021-11-12 22:51:23,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:51:23,940 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:51:23,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:51:23,941 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:51:23,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-12 22:51:26,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 22:51:26,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:51:26,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 22:51:26,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:26,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:26,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [565280119] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:51:26,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171888093] [2021-11-12 22:51:26,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:51:26,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:51:26,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:51:26,977 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:51:26,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e47060b-56ea-4c93-ad98-5f28401c87e0/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process