./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8 --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 69d24e9affd7540aafb8052ecd737d7732ca2a63c7e8e16adc4217413d1d99a5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:51:24,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:51:24,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:51:24,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:51:24,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:51:24,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:51:24,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:51:24,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:51:24,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:51:24,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:51:24,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:51:24,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:51:24,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:51:24,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:51:24,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:51:24,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:51:24,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:51:24,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:51:24,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:51:24,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:51:24,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:51:24,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:51:24,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:51:24,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:51:24,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:51:24,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:51:24,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:51:24,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:51:24,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:51:24,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:51:24,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:51:24,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:51:24,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:51:24,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:51:24,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:51:24,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:51:24,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:51:24,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:51:24,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:51:24,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:51:24,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:51:24,637 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 01:51:24,682 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:51:24,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:51:24,683 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:51:24,683 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:51:24,683 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:51:24,684 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:51:24,684 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:51:24,684 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:51:24,684 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:51:24,685 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:51:24,685 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:51:24,685 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:51:24,688 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:51:24,688 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:51:24,688 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:51:24,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:51:24,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:51:24,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:51:24,689 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:51:24,689 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:51:24,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:51:24,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:51:24,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:51:24,690 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:51:24,690 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:51:24,690 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:51:24,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:51:24,691 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:51:24,691 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:51:24,691 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:51:24,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:51:24,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:51:24,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:51:24,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:51:24,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:51:24,692 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:51:24,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:51:24,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:51:24,693 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:51:24,693 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_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69d24e9affd7540aafb8052ecd737d7732ca2a63c7e8e16adc4217413d1d99a5 [2021-11-07 01:51:25,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:51:25,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:51:25,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:51:25,051 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:51:25,052 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:51:25,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i [2021-11-07 01:51:25,122 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/data/aeb284269/c55a0c9f3fa44907b31542c19bda6204/FLAGd05e57a7f [2021-11-07 01:51:25,883 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:51:25,883 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i [2021-11-07 01:51:25,924 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/data/aeb284269/c55a0c9f3fa44907b31542c19bda6204/FLAGd05e57a7f [2021-11-07 01:51:26,097 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/data/aeb284269/c55a0c9f3fa44907b31542c19bda6204 [2021-11-07 01:51:26,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:51:26,101 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:51:26,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:51:26,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:51:26,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:51:26,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:51:26" (1/1) ... [2021-11-07 01:51:26,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fd62272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:26, skipping insertion in model container [2021-11-07 01:51:26,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:51:26" (1/1) ... [2021-11-07 01:51:26,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:51:26,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:51:26,788 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_8c991013-087a-4c57-b347-75b4da30808b/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i[37019,37032] [2021-11-07 01:51:26,965 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_8c991013-087a-4c57-b347-75b4da30808b/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i[47352,47365] [2021-11-07 01:51:26,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:51:26,990 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:51:26,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6b65ac9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:26, skipping insertion in model container [2021-11-07 01:51:26,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:51:26,992 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:51:26,995 INFO L168 Benchmark]: Toolchain (without parser) took 891.67 ms. Allocated memory is still 130.0 MB. Free memory was 96.9 MB in the beginning and 95.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:51:26,997 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory was 44.2 MB in the beginning and 44.2 MB in the end (delta: 43.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:51:26,999 INFO L168 Benchmark]: CACSL2BoogieTranslator took 888.44 ms. Allocated memory is still 130.0 MB. Free memory was 96.9 MB in the beginning and 95.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:51:27,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory was 44.2 MB in the beginning and 44.2 MB in the end (delta: 43.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 888.44 ms. Allocated memory is still 130.0 MB. Free memory was 96.9 MB in the beginning and 95.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8 --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 69d24e9affd7540aafb8052ecd737d7732ca2a63c7e8e16adc4217413d1d99a5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:51:29,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:51:29,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:51:29,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:51:29,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:51:29,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:51:29,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:51:29,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:51:29,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:51:29,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:51:29,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:51:29,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:51:29,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:51:29,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:51:29,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:51:29,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:51:29,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:51:29,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:51:29,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:51:29,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:51:29,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:51:29,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:51:29,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:51:29,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:51:29,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:51:29,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:51:29,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:51:29,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:51:29,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:51:29,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:51:29,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:51:29,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:51:29,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:51:29,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:51:29,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:51:29,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:51:29,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:51:29,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:51:29,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:51:29,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:51:29,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:51:29,384 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-07 01:51:29,409 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:51:29,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:51:29,411 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:51:29,411 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:51:29,411 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:51:29,411 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:51:29,412 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:51:29,412 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:51:29,412 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:51:29,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:51:29,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:51:29,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:51:29,413 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:51:29,414 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:51:29,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:51:29,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:51:29,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:51:29,415 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:51:29,415 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:51:29,415 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:51:29,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:51:29,415 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:51:29,416 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:51:29,416 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:51:29,416 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:51:29,416 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:51:29,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:51:29,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:51:29,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:51:29,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:51:29,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:51:29,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:51:29,418 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:51:29,418 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:51:29,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:51:29,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:51:29,419 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_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69d24e9affd7540aafb8052ecd737d7732ca2a63c7e8e16adc4217413d1d99a5 [2021-11-07 01:51:29,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:51:29,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:51:29,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:51:29,854 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:51:29,855 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:51:29,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i [2021-11-07 01:51:29,930 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/data/67b4fb094/c9ba6f80d70d420a83e607c2f9d26733/FLAGd75d47cc4 [2021-11-07 01:51:30,746 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:51:30,751 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i [2021-11-07 01:51:30,782 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/data/67b4fb094/c9ba6f80d70d420a83e607c2f9d26733/FLAGd75d47cc4 [2021-11-07 01:51:30,920 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/data/67b4fb094/c9ba6f80d70d420a83e607c2f9d26733 [2021-11-07 01:51:30,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:51:30,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:51:30,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:51:30,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:51:30,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:51:30,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:51:30" (1/1) ... [2021-11-07 01:51:30,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@356bd9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:30, skipping insertion in model container [2021-11-07 01:51:30,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:51:30" (1/1) ... [2021-11-07 01:51:30,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:51:31,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:51:31,480 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_8c991013-087a-4c57-b347-75b4da30808b/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i[37019,37032] [2021-11-07 01:51:31,605 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_8c991013-087a-4c57-b347-75b4da30808b/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i[47352,47365] [2021-11-07 01:51:31,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:51:31,640 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:51:31,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:51:31,728 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_8c991013-087a-4c57-b347-75b4da30808b/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i[37019,37032] [2021-11-07 01:51:31,830 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_8c991013-087a-4c57-b347-75b4da30808b/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i[47352,47365] [2021-11-07 01:51:31,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:51:31,843 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:51:31,902 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_8c991013-087a-4c57-b347-75b4da30808b/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i[37019,37032] [2021-11-07 01:51:32,010 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_8c991013-087a-4c57-b347-75b4da30808b/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i[47352,47365] [2021-11-07 01:51:32,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:51:32,071 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:51:32,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:32 WrapperNode [2021-11-07 01:51:32,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:51:32,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:51:32,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:51:32,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:51:32,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:32" (1/1) ... [2021-11-07 01:51:32,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:32" (1/1) ... [2021-11-07 01:51:32,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:51:32,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:51:32,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:51:32,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:51:32,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:32" (1/1) ... [2021-11-07 01:51:32,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:32" (1/1) ... [2021-11-07 01:51:32,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:32" (1/1) ... [2021-11-07 01:51:32,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:32" (1/1) ... [2021-11-07 01:51:32,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:32" (1/1) ... [2021-11-07 01:51:32,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:32" (1/1) ... [2021-11-07 01:51:32,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:32" (1/1) ... [2021-11-07 01:51:32,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:51:32,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:51:32,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:51:32,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:51:32,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:32" (1/1) ... [2021-11-07 01:51:32,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:51:32,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:51:32,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:51:32,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:51:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:51:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:51:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:51:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:51:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:51:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:51:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:51:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:51:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:51:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:51:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:51:32,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:51:37,350 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:51:37,350 INFO L299 CfgBuilder]: Removed 76 assume(true) statements. [2021-11-07 01:51:37,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:51:37 BoogieIcfgContainer [2021-11-07 01:51:37,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:51:37,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:51:37,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:51:37,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:51:37,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:51:30" (1/3) ... [2021-11-07 01:51:37,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3b280b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:51:37, skipping insertion in model container [2021-11-07 01:51:37,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:51:32" (2/3) ... [2021-11-07 01:51:37,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3b280b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:51:37, skipping insertion in model container [2021-11-07 01:51:37,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:51:37" (3/3) ... [2021-11-07 01:51:37,362 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test2-1.i [2021-11-07 01:51:37,367 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:51:37,368 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 435 error locations. [2021-11-07 01:51:37,412 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:51:37,419 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 [2021-11-07 01:51:37,419 INFO L340 AbstractCegarLoop]: Starting to check reachability of 435 error locations. [2021-11-07 01:51:37,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 890 states, 454 states have (on average 2.2158590308370045) internal successors, (1006), 889 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:37,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:51:37,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:37,460 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:51:37,461 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:51:37,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:37,467 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-07 01:51:37,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:37,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231868716] [2021-11-07 01:51:37,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:37,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:37,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:37,485 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:37,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:51:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:37,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:51:37,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:37,784 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 [2021-11-07 01:51:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:37,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:37,857 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:37,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231868716] [2021-11-07 01:51:37,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231868716] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:37,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:37,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:51:37,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785155976] [2021-11-07 01:51:37,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:51:37,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:37,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:51:37,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:51:37,898 INFO L87 Difference]: Start difference. First operand has 890 states, 454 states have (on average 2.2158590308370045) internal successors, (1006), 889 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:39,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:39,742 INFO L93 Difference]: Finished difference Result 877 states and 929 transitions. [2021-11-07 01:51:39,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:51:39,745 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 [2021-11-07 01:51:39,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:39,769 INFO L225 Difference]: With dead ends: 877 [2021-11-07 01:51:39,770 INFO L226 Difference]: Without dead ends: 875 [2021-11-07 01:51:39,771 INFO L786 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 [2021-11-07 01:51:39,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-11-07 01:51:39,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 874. [2021-11-07 01:51:39,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 454 states have (on average 2.041850220264317) internal successors, (927), 873 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:39,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 927 transitions. [2021-11-07 01:51:39,885 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 927 transitions. Word has length 3 [2021-11-07 01:51:39,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:39,886 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 927 transitions. [2021-11-07 01:51:39,887 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) [2021-11-07 01:51:39,887 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 927 transitions. [2021-11-07 01:51:39,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:51:39,887 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:39,888 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:51:39,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:40,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:40,099 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:51:40,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:40,100 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-07 01:51:40,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:40,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947847929] [2021-11-07 01:51:40,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:40,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:40,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:40,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:40,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:51:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:40,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:51:40,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:40,224 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 [2021-11-07 01:51:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:40,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:40,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:40,319 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:40,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947847929] [2021-11-07 01:51:40,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947847929] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:40,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:40,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:51:40,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505840478] [2021-11-07 01:51:40,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:51:40,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:40,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:51:40,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:51:40,322 INFO L87 Difference]: Start difference. First operand 874 states and 927 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) [2021-11-07 01:51:44,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:44,439 INFO L93 Difference]: Finished difference Result 1178 states and 1260 transitions. [2021-11-07 01:51:44,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:51:44,440 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 [2021-11-07 01:51:44,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:44,447 INFO L225 Difference]: With dead ends: 1178 [2021-11-07 01:51:44,447 INFO L226 Difference]: Without dead ends: 1178 [2021-11-07 01:51:44,448 INFO L786 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 [2021-11-07 01:51:44,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2021-11-07 01:51:44,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 909. [2021-11-07 01:51:44,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 498 states have (on average 2.0200803212851404) internal successors, (1006), 908 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1006 transitions. [2021-11-07 01:51:44,476 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1006 transitions. Word has length 3 [2021-11-07 01:51:44,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:44,476 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 1006 transitions. [2021-11-07 01:51:44,477 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) [2021-11-07 01:51:44,477 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1006 transitions. [2021-11-07 01:51:44,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:51:44,477 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:44,478 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:51:44,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:44,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:44,692 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:51:44,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:44,693 INFO L85 PathProgramCache]: Analyzing trace with hash 62249618, now seen corresponding path program 1 times [2021-11-07 01:51:44,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:44,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555329493] [2021-11-07 01:51:44,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:44,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:44,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:44,704 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:44,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:51:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:44,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:51:44,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:44,852 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 [2021-11-07 01:51:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:44,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:44,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:44,912 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:44,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555329493] [2021-11-07 01:51:44,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555329493] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:44,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:44,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:51:44,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380149950] [2021-11-07 01:51:44,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:51:44,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:44,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:51:44,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:51:44,919 INFO L87 Difference]: Start difference. First operand 909 states and 1006 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) [2021-11-07 01:51:46,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:46,763 INFO L93 Difference]: Finished difference Result 1096 states and 1215 transitions. [2021-11-07 01:51:46,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:51:46,765 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 [2021-11-07 01:51:46,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:46,776 INFO L225 Difference]: With dead ends: 1096 [2021-11-07 01:51:46,776 INFO L226 Difference]: Without dead ends: 1096 [2021-11-07 01:51:46,777 INFO L786 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 [2021-11-07 01:51:46,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2021-11-07 01:51:46,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 862. [2021-11-07 01:51:46,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 498 states have (on average 1.9196787148594376) internal successors, (956), 861 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:46,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 956 transitions. [2021-11-07 01:51:46,800 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 956 transitions. Word has length 8 [2021-11-07 01:51:46,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:46,800 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 956 transitions. [2021-11-07 01:51:46,801 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) [2021-11-07 01:51:46,802 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 956 transitions. [2021-11-07 01:51:46,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:51:46,802 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:46,802 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:51:46,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:47,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:47,014 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:51:47,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:47,015 INFO L85 PathProgramCache]: Analyzing trace with hash 62249619, now seen corresponding path program 1 times [2021-11-07 01:51:47,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:47,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647306778] [2021-11-07 01:51:47,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:47,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:47,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:47,017 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:47,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:51:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:47,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:51:47,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:47,157 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 [2021-11-07 01:51:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:47,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:47,299 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:47,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647306778] [2021-11-07 01:51:47,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647306778] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:47,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:47,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:51:47,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344343626] [2021-11-07 01:51:47,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:51:47,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:47,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:51:47,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:51:47,310 INFO L87 Difference]: Start difference. First operand 862 states and 956 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) [2021-11-07 01:51:51,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:51,162 INFO L93 Difference]: Finished difference Result 1128 states and 1210 transitions. [2021-11-07 01:51:51,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:51:51,163 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 [2021-11-07 01:51:51,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:51,169 INFO L225 Difference]: With dead ends: 1128 [2021-11-07 01:51:51,169 INFO L226 Difference]: Without dead ends: 1128 [2021-11-07 01:51:51,170 INFO L786 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 [2021-11-07 01:51:51,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-11-07 01:51:51,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 852. [2021-11-07 01:51:51,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 498 states have (on average 1.893574297188755) internal successors, (943), 851 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:51,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 943 transitions. [2021-11-07 01:51:51,191 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 943 transitions. Word has length 8 [2021-11-07 01:51:51,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:51,192 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 943 transitions. [2021-11-07 01:51:51,192 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) [2021-11-07 01:51:51,192 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 943 transitions. [2021-11-07 01:51:51,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 01:51:51,193 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:51,193 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:51:51,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:51,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:51,404 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr434ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:51:51,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:51,404 INFO L85 PathProgramCache]: Analyzing trace with hash 523681018, now seen corresponding path program 1 times [2021-11-07 01:51:51,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:51,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521309938] [2021-11-07 01:51:51,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:51,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:51,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:51,407 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:51,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:51:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:51,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:51:51,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:51,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:51:51,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:51:51,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:51:51,695 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:51:51,696 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 [2021-11-07 01:51:51,790 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:51:51,790 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 [2021-11-07 01:51:51,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:51,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:51,892 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:51,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521309938] [2021-11-07 01:51:51,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521309938] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:51,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:51,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:51:51,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379213532] [2021-11-07 01:51:51,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:51:51,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:51,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:51:51,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:51:51,894 INFO L87 Difference]: Start difference. First operand 852 states and 943 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:53,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:53,894 INFO L93 Difference]: Finished difference Result 1079 states and 1194 transitions. [2021-11-07 01:51:53,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:51:53,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 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 10 [2021-11-07 01:51:53,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:53,902 INFO L225 Difference]: With dead ends: 1079 [2021-11-07 01:51:53,902 INFO L226 Difference]: Without dead ends: 1079 [2021-11-07 01:51:53,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:51:53,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2021-11-07 01:51:53,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 852. [2021-11-07 01:51:53,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 498 states have (on average 1.891566265060241) internal successors, (942), 851 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:53,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 942 transitions. [2021-11-07 01:51:53,923 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 942 transitions. Word has length 10 [2021-11-07 01:51:53,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:53,924 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 942 transitions. [2021-11-07 01:51:53,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:53,924 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 942 transitions. [2021-11-07 01:51:53,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 01:51:53,925 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:53,925 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:51:53,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:54,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:54,138 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:51:54,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:54,139 INFO L85 PathProgramCache]: Analyzing trace with hash -520774338, now seen corresponding path program 1 times [2021-11-07 01:51:54,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:54,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726189685] [2021-11-07 01:51:54,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:54,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:54,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:54,142 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:54,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:51:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:54,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:51:54,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:54,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:54,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:54,382 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:54,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726189685] [2021-11-07 01:51:54,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726189685] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:54,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:54,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:51:54,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559162820] [2021-11-07 01:51:54,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:51:54,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:54,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:51:54,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:51:54,389 INFO L87 Difference]: Start difference. First operand 852 states and 942 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) [2021-11-07 01:51:54,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:54,424 INFO L93 Difference]: Finished difference Result 819 states and 908 transitions. [2021-11-07 01:51:54,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:51:54,425 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 [2021-11-07 01:51:54,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:54,430 INFO L225 Difference]: With dead ends: 819 [2021-11-07 01:51:54,430 INFO L226 Difference]: Without dead ends: 819 [2021-11-07 01:51:54,431 INFO L786 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 [2021-11-07 01:51:54,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-11-07 01:51:54,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 810. [2021-11-07 01:51:54,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 480 states have (on average 1.8729166666666666) internal successors, (899), 809 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:54,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 899 transitions. [2021-11-07 01:51:54,458 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 899 transitions. Word has length 18 [2021-11-07 01:51:54,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:54,458 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 899 transitions. [2021-11-07 01:51:54,459 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) [2021-11-07 01:51:54,459 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 899 transitions. [2021-11-07 01:51:54,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 01:51:54,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:54,460 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:51:54,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-07 01:51:54,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:54,673 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:51:54,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:54,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2047030904, now seen corresponding path program 1 times [2021-11-07 01:51:54,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:54,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115433234] [2021-11-07 01:51:54,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:54,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:54,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:54,677 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:54,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:51:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:54,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:51:54,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:54,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:54,982 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:54,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115433234] [2021-11-07 01:51:54,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115433234] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:54,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:54,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:51:54,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779517150] [2021-11-07 01:51:54,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:51:54,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:54,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:51:54,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:51:54,985 INFO L87 Difference]: Start difference. First operand 810 states and 899 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) [2021-11-07 01:51:55,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:55,055 INFO L93 Difference]: Finished difference Result 798 states and 880 transitions. [2021-11-07 01:51:55,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:51:55,056 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 [2021-11-07 01:51:55,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:55,061 INFO L225 Difference]: With dead ends: 798 [2021-11-07 01:51:55,061 INFO L226 Difference]: Without dead ends: 798 [2021-11-07 01:51:55,061 INFO L786 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 [2021-11-07 01:51:55,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-11-07 01:51:55,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 788. [2021-11-07 01:51:55,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 472 states have (on average 1.8432203389830508) internal successors, (870), 787 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:55,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 870 transitions. [2021-11-07 01:51:55,081 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 870 transitions. Word has length 20 [2021-11-07 01:51:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:55,081 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 870 transitions. [2021-11-07 01:51:55,082 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) [2021-11-07 01:51:55,082 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 870 transitions. [2021-11-07 01:51:55,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:51:55,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:55,083 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:51:55,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:55,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:55,299 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:51:55,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:55,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589690, now seen corresponding path program 1 times [2021-11-07 01:51:55,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:55,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980737574] [2021-11-07 01:51:55,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:55,301 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:55,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:55,302 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:55,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:51:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:55,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:51:55,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:55,524 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 [2021-11-07 01:51:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:55,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:55,812 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:55,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980737574] [2021-11-07 01:51:55,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980737574] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:55,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:55,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:51:55,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759900748] [2021-11-07 01:51:55,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:51:55,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:55,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:51:55,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:51:55,814 INFO L87 Difference]: Start difference. First operand 788 states and 870 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) [2021-11-07 01:51:57,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:57,542 INFO L93 Difference]: Finished difference Result 1030 states and 1137 transitions. [2021-11-07 01:51:57,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:51:57,543 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 [2021-11-07 01:51:57,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:57,548 INFO L225 Difference]: With dead ends: 1030 [2021-11-07 01:51:57,549 INFO L226 Difference]: Without dead ends: 1030 [2021-11-07 01:51:57,549 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:51:57,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2021-11-07 01:51:57,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 784. [2021-11-07 01:51:57,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 472 states have (on average 1.8347457627118644) internal successors, (866), 783 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 866 transitions. [2021-11-07 01:51:57,570 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 866 transitions. Word has length 34 [2021-11-07 01:51:57,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:57,570 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 866 transitions. [2021-11-07 01:51:57,570 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) [2021-11-07 01:51:57,571 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 866 transitions. [2021-11-07 01:51:57,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 01:51:57,572 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:57,572 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:51:57,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:57,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:57,785 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:51:57,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:57,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589689, now seen corresponding path program 1 times [2021-11-07 01:51:57,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:57,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562060862] [2021-11-07 01:51:57,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:57,787 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:57,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:57,788 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:57,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:51:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:58,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:51:58,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:58,028 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 [2021-11-07 01:51:58,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:58,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:58,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:58,858 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:58,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562060862] [2021-11-07 01:51:58,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562060862] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:58,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:58,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:51:58,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948755262] [2021-11-07 01:51:58,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:51:58,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:58,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:51:58,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:51:58,860 INFO L87 Difference]: Start difference. First operand 784 states and 866 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) [2021-11-07 01:52:03,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:03,517 INFO L93 Difference]: Finished difference Result 1068 states and 1141 transitions. [2021-11-07 01:52:03,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:52:03,518 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 [2021-11-07 01:52:03,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:03,523 INFO L225 Difference]: With dead ends: 1068 [2021-11-07 01:52:03,524 INFO L226 Difference]: Without dead ends: 1068 [2021-11-07 01:52:03,524 INFO L786 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 [2021-11-07 01:52:03,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-07 01:52:03,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 780. [2021-11-07 01:52:03,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 472 states have (on average 1.826271186440678) internal successors, (862), 779 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:03,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 862 transitions. [2021-11-07 01:52:03,543 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 862 transitions. Word has length 34 [2021-11-07 01:52:03,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:03,544 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 862 transitions. [2021-11-07 01:52:03,544 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) [2021-11-07 01:52:03,544 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 862 transitions. [2021-11-07 01:52:03,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:52:03,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:03,546 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:03,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-07 01:52:03,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:03,758 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:52:03,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:03,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1651334985, now seen corresponding path program 1 times [2021-11-07 01:52:03,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:03,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017425287] [2021-11-07 01:52:03,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:03,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:03,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:03,760 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:03,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:52:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:04,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:52:04,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:04,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:04,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:04,311 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:04,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017425287] [2021-11-07 01:52:04,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017425287] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:04,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:04,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:52:04,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212658468] [2021-11-07 01:52:04,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:52:04,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:04,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:52:04,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:52:04,313 INFO L87 Difference]: Start difference. First operand 780 states and 862 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:04,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:04,378 INFO L93 Difference]: Finished difference Result 783 states and 861 transitions. [2021-11-07 01:52:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:52:04,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:52:04,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:04,382 INFO L225 Difference]: With dead ends: 783 [2021-11-07 01:52:04,382 INFO L226 Difference]: Without dead ends: 783 [2021-11-07 01:52:04,383 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:52:04,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-11-07 01:52:04,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 774. [2021-11-07 01:52:04,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 466 states have (on average 1.8283261802575108) internal successors, (852), 773 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:04,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 852 transitions. [2021-11-07 01:52:04,401 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 852 transitions. Word has length 49 [2021-11-07 01:52:04,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:04,402 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 852 transitions. [2021-11-07 01:52:04,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:04,403 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 852 transitions. [2021-11-07 01:52:04,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 01:52:04,411 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:04,412 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:04,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:04,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:04,618 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:52:04,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:04,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1352588907, now seen corresponding path program 1 times [2021-11-07 01:52:04,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:04,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926663352] [2021-11-07 01:52:04,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:04,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:04,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:04,620 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:04,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:52:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:04,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:52:04,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:05,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:05,841 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:05,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926663352] [2021-11-07 01:52:05,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926663352] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:05,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:05,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:52:05,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292361462] [2021-11-07 01:52:05,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:52:05,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:05,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:52:05,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:52:05,844 INFO L87 Difference]: Start difference. First operand 774 states and 852 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:05,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:05,994 INFO L93 Difference]: Finished difference Result 984 states and 1079 transitions. [2021-11-07 01:52:05,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:52:05,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-11-07 01:52:05,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:06,000 INFO L225 Difference]: With dead ends: 984 [2021-11-07 01:52:06,000 INFO L226 Difference]: Without dead ends: 984 [2021-11-07 01:52:06,001 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:52:06,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2021-11-07 01:52:06,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 919. [2021-11-07 01:52:06,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 611 states have (on average 1.7528641571194763) internal successors, (1071), 918 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:06,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1071 transitions. [2021-11-07 01:52:06,022 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1071 transitions. Word has length 57 [2021-11-07 01:52:06,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:06,022 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 1071 transitions. [2021-11-07 01:52:06,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:06,023 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1071 transitions. [2021-11-07 01:52:06,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:52:06,026 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:06,026 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:06,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:06,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:06,240 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:52:06,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:06,240 INFO L85 PathProgramCache]: Analyzing trace with hash -531678063, now seen corresponding path program 1 times [2021-11-07 01:52:06,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:06,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231968370] [2021-11-07 01:52:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:06,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:06,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:06,242 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:06,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:52:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:06,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:52:06,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:06,799 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 [2021-11-07 01:52:06,805 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 [2021-11-07 01:52:07,581 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 01:52:07,581 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 28 treesize of output 30 [2021-11-07 01:52:07,604 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 01:52:07,604 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 27 treesize of output 23 [2021-11-07 01:52:07,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:07,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:15,082 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:15,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231968370] [2021-11-07 01:52:15,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231968370] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:15,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:15,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:52:15,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168741074] [2021-11-07 01:52:15,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:52:15,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:15,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:52:15,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-07 01:52:15,086 INFO L87 Difference]: Start difference. First operand 919 states and 1071 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) [2021-11-07 01:52:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:27,482 INFO L93 Difference]: Finished difference Result 1213 states and 1463 transitions. [2021-11-07 01:52:27,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:52:27,484 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 [2021-11-07 01:52:27,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:27,489 INFO L225 Difference]: With dead ends: 1213 [2021-11-07 01:52:27,489 INFO L226 Difference]: Without dead ends: 1213 [2021-11-07 01:52:27,489 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=26, Invalid=27, Unknown=3, NotChecked=0, Total=56 [2021-11-07 01:52:27,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2021-11-07 01:52:27,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 881. [2021-11-07 01:52:27,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 611 states have (on average 1.690671031096563) internal successors, (1033), 880 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1033 transitions. [2021-11-07 01:52:27,528 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1033 transitions. Word has length 60 [2021-11-07 01:52:27,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:27,530 INFO L470 AbstractCegarLoop]: Abstraction has 881 states and 1033 transitions. [2021-11-07 01:52:27,530 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) [2021-11-07 01:52:27,531 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1033 transitions. [2021-11-07 01:52:27,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:52:27,533 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:27,533 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:27,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:27,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:27,749 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:52:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:27,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1426362414, now seen corresponding path program 1 times [2021-11-07 01:52:27,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:27,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412994099] [2021-11-07 01:52:27,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:27,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:27,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:27,751 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:27,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:52:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:28,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:52:28,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:28,375 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 [2021-11-07 01:52:28,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-11-07 01:52:28,430 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 26 treesize of output 14 [2021-11-07 01:52:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:28,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:28,627 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:28,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412994099] [2021-11-07 01:52:28,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412994099] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:28,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:28,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:52:28,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016502892] [2021-11-07 01:52:28,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:52:28,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:28,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:52:28,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:52:28,629 INFO L87 Difference]: Start difference. First operand 881 states and 1033 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:32,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:32,771 INFO L93 Difference]: Finished difference Result 1416 states and 1672 transitions. [2021-11-07 01:52:32,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:52:32,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-07 01:52:32,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:32,777 INFO L225 Difference]: With dead ends: 1416 [2021-11-07 01:52:32,777 INFO L226 Difference]: Without dead ends: 1416 [2021-11-07 01:52:32,777 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:52:32,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2021-11-07 01:52:32,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 880. [2021-11-07 01:52:32,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 611 states have (on average 1.6890343698854338) internal successors, (1032), 879 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1032 transitions. [2021-11-07 01:52:32,799 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1032 transitions. Word has length 66 [2021-11-07 01:52:32,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:32,799 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 1032 transitions. [2021-11-07 01:52:32,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:32,800 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1032 transitions. [2021-11-07 01:52:32,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 01:52:32,800 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:32,800 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:32,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:33,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:33,015 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr77ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:52:33,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:33,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1267561538, now seen corresponding path program 1 times [2021-11-07 01:52:33,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:33,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643194895] [2021-11-07 01:52:33,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:33,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:33,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:33,016 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:33,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:52:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:33,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:52:33,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:33,608 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 [2021-11-07 01:52:33,632 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 [2021-11-07 01:52:33,640 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 [2021-11-07 01:52:33,720 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 [2021-11-07 01:52:33,724 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 [2021-11-07 01:52:33,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:33,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:34,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:34,315 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:34,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643194895] [2021-11-07 01:52:34,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643194895] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:34,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:34,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:52:34,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601626228] [2021-11-07 01:52:34,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:52:34,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:34,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:52:34,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:52:34,317 INFO L87 Difference]: Start difference. First operand 880 states and 1032 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:46,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:46,779 INFO L93 Difference]: Finished difference Result 1251 states and 1469 transitions. [2021-11-07 01:52:46,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:52:46,780 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 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 67 [2021-11-07 01:52:46,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:46,784 INFO L225 Difference]: With dead ends: 1251 [2021-11-07 01:52:46,785 INFO L226 Difference]: Without dead ends: 1251 [2021-11-07 01:52:46,785 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:52:46,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2021-11-07 01:52:46,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 879. [2021-11-07 01:52:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 611 states have (on average 1.6873977086743044) internal successors, (1031), 878 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:46,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1031 transitions. [2021-11-07 01:52:46,804 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1031 transitions. Word has length 67 [2021-11-07 01:52:46,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:46,805 INFO L470 AbstractCegarLoop]: Abstraction has 879 states and 1031 transitions. [2021-11-07 01:52:46,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:46,805 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1031 transitions. [2021-11-07 01:52:46,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:52:46,806 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:46,806 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:52:46,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-07 01:52:47,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:47,020 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:52:47,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:47,021 INFO L85 PathProgramCache]: Analyzing trace with hash -582276570, now seen corresponding path program 1 times [2021-11-07 01:52:47,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:47,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431402961] [2021-11-07 01:52:47,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:47,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:47,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:47,022 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:47,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:52:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:47,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:52:47,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:47,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:47,856 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:47,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431402961] [2021-11-07 01:52:47,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431402961] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:52:47,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:52:47,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:52:47,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921983597] [2021-11-07 01:52:47,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:52:47,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:47,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:52:47,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:52:47,859 INFO L87 Difference]: Start difference. First operand 879 states and 1031 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:48,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:48,060 INFO L93 Difference]: Finished difference Result 1608 states and 1872 transitions. [2021-11-07 01:52:48,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:52:48,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 01:52:48,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:48,069 INFO L225 Difference]: With dead ends: 1608 [2021-11-07 01:52:48,069 INFO L226 Difference]: Without dead ends: 1608 [2021-11-07 01:52:48,069 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:52:48,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2021-11-07 01:52:48,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 882. [2021-11-07 01:52:48,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 614 states have (on average 1.6840390879478828) internal successors, (1034), 881 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:48,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1034 transitions. [2021-11-07 01:52:48,091 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1034 transitions. Word has length 71 [2021-11-07 01:52:48,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:48,092 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 1034 transitions. [2021-11-07 01:52:48,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:48,092 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1034 transitions. [2021-11-07 01:52:48,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:52:48,093 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:48,093 INFO L513 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] [2021-11-07 01:52:48,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:48,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:52:48,308 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:52:48,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:48,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1283072730, now seen corresponding path program 1 times [2021-11-07 01:52:48,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:48,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470544649] [2021-11-07 01:52:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:48,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:48,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:48,312 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:48,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:52:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:48,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:52:48,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:49,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:49,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:49,420 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:49,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470544649] [2021-11-07 01:52:49,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470544649] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:49,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [642366670] [2021-11-07 01:52:49,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:49,420 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:52:49,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:52:49,423 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:52:49,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:52:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:50,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:52:50,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:50,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:50,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:50,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:50,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [642366670] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:50,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840066180] [2021-11-07 01:52:50,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:52:50,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:52:50,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:52:50,515 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:52:50,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 01:52:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:52:51,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:52:51,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:51,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:51,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840066180] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:51,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:52:51,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 13 [2021-11-07 01:52:51,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462610942] [2021-11-07 01:52:51,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:52:51,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:52:51,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:52:51,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:52:51,596 INFO L87 Difference]: Start difference. First operand 882 states and 1034 transitions. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:52,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:52:52,651 INFO L93 Difference]: Finished difference Result 2350 states and 2726 transitions. [2021-11-07 01:52:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 01:52:52,651 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 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 73 [2021-11-07 01:52:52,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:52:52,660 INFO L225 Difference]: With dead ends: 2350 [2021-11-07 01:52:52,661 INFO L226 Difference]: Without dead ends: 2350 [2021-11-07 01:52:52,661 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=188, Invalid=364, Unknown=0, NotChecked=0, Total=552 [2021-11-07 01:52:52,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2021-11-07 01:52:52,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 891. [2021-11-07 01:52:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 623 states have (on average 1.6773675762439808) internal successors, (1045), 890 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:52,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1045 transitions. [2021-11-07 01:52:52,685 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1045 transitions. Word has length 73 [2021-11-07 01:52:52,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:52:52,686 INFO L470 AbstractCegarLoop]: Abstraction has 891 states and 1045 transitions. [2021-11-07 01:52:52,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:52:52,686 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1045 transitions. [2021-11-07 01:52:52,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 01:52:52,687 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:52:52,687 INFO L513 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] [2021-11-07 01:52:52,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-07 01:52:52,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:53,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:52:53,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:52:53,292 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:52:53,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:52:53,293 INFO L85 PathProgramCache]: Analyzing trace with hash -376896730, now seen corresponding path program 2 times [2021-11-07 01:52:53,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:52:53,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217567352] [2021-11-07 01:52:53,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:52:53,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:52:53,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:52:53,295 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:52:53,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:52:54,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:52:54,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:52:54,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:52:54,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:54,567 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:54,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:55,125 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:52:55,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217567352] [2021-11-07 01:52:55,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217567352] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:55,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1987781567] [2021-11-07 01:52:55,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:52:55,126 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:52:55,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:52:55,130 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:52:55,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 01:52:56,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:52:56,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:52:56,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:52:56,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:52:56,768 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:56,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:52:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:52:56,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1987781567] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:52:56,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241704208] [2021-11-07 01:52:56,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:52:56,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:52:56,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:52:56,941 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:52:56,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 01:53:24,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:53:24,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:53:24,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:53:24,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:53:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:53:24,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:53:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:53:25,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241704208] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:53:25,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:53:25,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 25 [2021-11-07 01:53:25,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40879315] [2021-11-07 01:53:25,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 01:53:25,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:53:25,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 01:53:25,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-11-07 01:53:25,590 INFO L87 Difference]: Start difference. First operand 891 states and 1045 transitions. Second operand has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:53:31,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:53:31,132 INFO L93 Difference]: Finished difference Result 4343 states and 5046 transitions. [2021-11-07 01:53:31,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-07 01:53:31,134 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-07 01:53:31,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:53:31,149 INFO L225 Difference]: With dead ends: 4343 [2021-11-07 01:53:31,150 INFO L226 Difference]: Without dead ends: 4343 [2021-11-07 01:53:31,151 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=769, Invalid=1883, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 01:53:31,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4343 states. [2021-11-07 01:53:31,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4343 to 907. [2021-11-07 01:53:31,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 639 states have (on average 1.6651017214397497) internal successors, (1064), 906 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:53:31,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1064 transitions. [2021-11-07 01:53:31,192 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1064 transitions. Word has length 77 [2021-11-07 01:53:31,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:53:31,192 INFO L470 AbstractCegarLoop]: Abstraction has 907 states and 1064 transitions. [2021-11-07 01:53:31,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:53:31,193 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1064 transitions. [2021-11-07 01:53:31,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 01:53:31,193 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:53:31,194 INFO L513 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] [2021-11-07 01:53:31,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:53:31,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-07 01:53:31,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-07 01:53:31,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:53:31,811 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-11-07 01:53:31,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:53:31,811 INFO L85 PathProgramCache]: Analyzing trace with hash 688279334, now seen corresponding path program 3 times [2021-11-07 01:53:31,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:53:31,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375279334] [2021-11-07 01:53:31,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:53:31,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:53:31,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:53:31,813 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:53:31,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 01:53:33,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-07 01:53:33,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:53:33,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:53:33,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:53:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:53:33,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:53:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:53:35,403 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:53:35,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375279334] [2021-11-07 01:53:35,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375279334] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:53:35,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [979338105] [2021-11-07 01:53:35,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:53:35,404 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:53:35,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:53:35,405 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:53:35,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-07 01:53:38,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-07 01:53:38,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:53:38,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:53:38,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:53:38,705 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:53:38,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:53:39,036 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:53:39,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [979338105] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:53:39,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958910393] [2021-11-07 01:53:39,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:53:39,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:53:39,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:53:39,038 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:53:39,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c991013-087a-4c57-b347-75b4da30808b/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process