./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d155cc00d5c2ba6f5ef1d5e883c6d133605de01ed97e4300960f893025d81fd1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:21:36,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:21:36,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:21:36,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:21:36,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:21:36,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:21:36,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:21:36,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:21:36,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:21:36,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:21:36,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:21:36,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:21:36,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:21:36,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:21:36,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:21:36,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:21:36,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:21:36,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:21:36,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:21:36,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:21:36,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:21:36,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:21:36,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:21:36,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:21:36,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:21:36,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:21:36,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:21:36,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:21:36,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:21:36,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:21:36,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:21:36,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:21:36,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:21:36,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:21:36,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:21:36,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:21:36,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:21:36,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:21:36,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:21:36,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:21:36,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:21:36,825 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:21:36,886 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:21:36,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:21:36,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:21:36,888 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:21:36,888 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:21:36,889 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:21:36,889 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:21:36,889 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:21:36,901 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:21:36,902 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:21:36,903 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:21:36,903 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:21:36,904 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:21:36,904 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:21:36,904 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:21:36,904 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:21:36,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:21:36,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:21:36,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:21:36,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:21:36,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:21:36,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:21:36,907 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:21:36,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:21:36,907 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:21:36,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:21:36,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:21:36,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:21:36,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:21:36,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:21:36,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:21:36,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:21:36,912 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:21:36,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:21:36,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:21:36,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:21:36,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:21:36,913 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_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d155cc00d5c2ba6f5ef1d5e883c6d133605de01ed97e4300960f893025d81fd1 [2021-11-19 14:21:37,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:21:37,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:21:37,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:21:37,310 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:21:37,311 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:21:37,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2021-11-19 14:21:37,458 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/data/b60a88a03/49a11d6924df43b5bef5b8fb18fe9e1e/FLAG845699db0 [2021-11-19 14:21:38,327 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:21:38,328 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2021-11-19 14:21:38,384 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/data/b60a88a03/49a11d6924df43b5bef5b8fb18fe9e1e/FLAG845699db0 [2021-11-19 14:21:38,828 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/data/b60a88a03/49a11d6924df43b5bef5b8fb18fe9e1e [2021-11-19 14:21:38,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:21:38,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:21:38,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:21:38,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:21:38,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:21:38,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:21:38" (1/1) ... [2021-11-19 14:21:38,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfeaf81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:38, skipping insertion in model container [2021-11-19 14:21:38,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:21:38" (1/1) ... [2021-11-19 14:21:38,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:21:39,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:21:39,345 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4499,4512] [2021-11-19 14:21:39,353 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4559,4572] [2021-11-19 14:21:39,381 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:21:39,387 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:21:40,613 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:40,614 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:40,615 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:40,616 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:40,618 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:40,634 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:40,635 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:40,637 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:40,638 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:40,640 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:40,642 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:40,643 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:40,643 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:41,090 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:21:41,092 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:21:41,093 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:21:41,095 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:21:41,097 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:21:41,098 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:21:41,099 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:21:41,100 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:21:41,100 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:21:41,101 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:21:41,275 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:21:41,306 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:21:41,327 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) [2021-11-19 14:21:41,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@650493ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:41, skipping insertion in model container [2021-11-19 14:21:41,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:21:41,328 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:21:41,331 INFO L158 Benchmark]: Toolchain (without parser) took 2497.34ms. Allocated memory was 102.8MB in the beginning and 134.2MB in the end (delta: 31.5MB). Free memory was 63.2MB in the beginning and 78.1MB in the end (delta: -14.9MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2021-11-19 14:21:41,332 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 102.8MB. Free memory was 57.6MB in the beginning and 57.6MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:21:41,333 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2494.63ms. Allocated memory was 102.8MB in the beginning and 134.2MB in the end (delta: 31.5MB). Free memory was 63.0MB in the beginning and 78.1MB in the end (delta: -15.1MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2021-11-19 14:21:41,336 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 102.8MB. Free memory was 57.6MB in the beginning and 57.6MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2494.63ms. Allocated memory was 102.8MB in the beginning and 134.2MB in the end (delta: 31.5MB). Free memory was 63.0MB in the beginning and 78.1MB in the end (delta: -15.1MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7037]: 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_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d155cc00d5c2ba6f5ef1d5e883c6d133605de01ed97e4300960f893025d81fd1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:21:44,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:21:44,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:21:44,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:21:44,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:21:44,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:21:44,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:21:44,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:21:44,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:21:44,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:21:44,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:21:44,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:21:44,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:21:44,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:21:44,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:21:44,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:21:44,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:21:44,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:21:44,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:21:44,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:21:44,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:21:44,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:21:44,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:21:44,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:21:44,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:21:44,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:21:44,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:21:44,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:21:44,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:21:44,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:21:44,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:21:44,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:21:44,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:21:44,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:21:44,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:21:44,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:21:44,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:21:44,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:21:44,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:21:44,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:21:44,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:21:44,158 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:21:44,190 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:21:44,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:21:44,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:21:44,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:21:44,192 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:21:44,193 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:21:44,193 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:21:44,194 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:21:44,194 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:21:44,194 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:21:44,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:21:44,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:21:44,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:21:44,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:21:44,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:21:44,197 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:21:44,197 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:21:44,198 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:21:44,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:21:44,198 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:21:44,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:21:44,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:21:44,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:21:44,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:21:44,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:21:44,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:21:44,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:21:44,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:21:44,201 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:21:44,201 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:21:44,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:21:44,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:21:44,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:21:44,203 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_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d155cc00d5c2ba6f5ef1d5e883c6d133605de01ed97e4300960f893025d81fd1 [2021-11-19 14:21:44,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:21:44,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:21:44,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:21:44,703 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:21:44,704 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:21:44,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2021-11-19 14:21:44,798 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/data/270595245/daf36614fd844cb087d21eb478a6c9dc/FLAGbdd9f30c6 [2021-11-19 14:21:45,812 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:21:45,813 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2021-11-19 14:21:45,860 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/data/270595245/daf36614fd844cb087d21eb478a6c9dc/FLAGbdd9f30c6 [2021-11-19 14:21:46,228 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/data/270595245/daf36614fd844cb087d21eb478a6c9dc [2021-11-19 14:21:46,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:21:46,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:21:46,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:21:46,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:21:46,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:21:46,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:21:46" (1/1) ... [2021-11-19 14:21:46,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c180176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:46, skipping insertion in model container [2021-11-19 14:21:46,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:21:46" (1/1) ... [2021-11-19 14:21:46,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:21:46,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:21:46,837 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4499,4512] [2021-11-19 14:21:46,847 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4559,4572] [2021-11-19 14:21:46,878 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:21:46,883 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:21:47,797 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:47,798 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:47,798 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:47,800 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:47,801 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:47,820 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:47,821 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:47,823 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:47,824 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:47,827 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:47,828 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:47,829 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:47,830 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:48,385 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:21:48,405 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:21:48,407 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:21:48,409 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:21:48,411 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:21:48,413 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:21:48,414 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:21:48,415 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:21:48,432 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:21:48,434 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:21:48,621 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:21:48,653 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:21:48,679 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:21:48,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:21:48,742 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4499,4512] [2021-11-19 14:21:48,745 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4559,4572] [2021-11-19 14:21:48,747 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:21:48,748 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:21:48,852 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:48,854 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:48,855 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:48,856 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:48,857 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:48,869 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:48,875 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:48,877 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:48,878 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:48,880 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:48,881 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:48,882 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:48,883 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:48,954 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:21:48,955 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:21:48,956 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:21:48,958 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:21:48,959 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:21:48,960 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:21:48,970 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:21:48,971 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:21:48,972 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:21:48,972 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:21:49,029 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:21:49,069 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:21:49,086 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:21:49,117 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4499,4512] [2021-11-19 14:21:49,118 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4559,4572] [2021-11-19 14:21:49,128 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:21:49,129 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:21:49,183 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:49,184 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:49,184 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:49,185 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:49,186 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:49,233 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:49,233 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:49,236 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:49,236 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:49,237 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:49,239 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:49,239 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:49,240 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:49,291 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:21:49,293 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:21:49,293 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:21:49,294 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:21:49,295 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:21:49,296 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:21:49,297 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:21:49,298 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:21:49,298 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:21:49,299 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:21:49,339 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:21:49,360 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:21:49,678 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:21:49,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:49 WrapperNode [2021-11-19 14:21:49,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:21:49,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:21:49,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:21:49,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:21:49,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:49" (1/1) ... [2021-11-19 14:21:49,805 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:49" (1/1) ... [2021-11-19 14:21:49,862 INFO L137 Inliner]: procedures = 700, calls = 1050, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 150 [2021-11-19 14:21:49,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:21:49,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:21:49,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:21:49,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:21:49,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:49" (1/1) ... [2021-11-19 14:21:49,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:49" (1/1) ... [2021-11-19 14:21:49,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:49" (1/1) ... [2021-11-19 14:21:49,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:49" (1/1) ... [2021-11-19 14:21:49,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:49" (1/1) ... [2021-11-19 14:21:49,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:49" (1/1) ... [2021-11-19 14:21:49,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:49" (1/1) ... [2021-11-19 14:21:49,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:21:49,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:21:49,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:21:49,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:21:49,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:49" (1/1) ... [2021-11-19 14:21:50,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:21:50,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:21:50,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:21:50,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:21:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:21:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:21:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:21:50,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:21:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2021-11-19 14:21:50,101 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2021-11-19 14:21:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:21:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2021-11-19 14:21:50,102 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2021-11-19 14:21:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:21:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:21:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_insert_before [2021-11-19 14:21:50,103 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_insert_before [2021-11-19 14:21:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:21:50,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:21:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:21:50,103 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:21:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:21:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:21:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:21:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 14:21:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 14:21:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2021-11-19 14:21:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2021-11-19 14:21:50,517 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:21:50,519 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:21:51,066 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:21:51,076 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:21:51,076 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 14:21:51,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:21:51 BoogieIcfgContainer [2021-11-19 14:21:51,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:21:51,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:21:51,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:21:51,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:21:51,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:21:46" (1/3) ... [2021-11-19 14:21:51,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8d5335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:21:51, skipping insertion in model container [2021-11-19 14:21:51,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:49" (2/3) ... [2021-11-19 14:21:51,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8d5335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:21:51, skipping insertion in model container [2021-11-19 14:21:51,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:21:51" (3/3) ... [2021-11-19 14:21:51,099 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_push_back_harness.i [2021-11-19 14:21:51,112 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:21:51,118 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:21:51,182 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:21:51,189 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:21:51,190 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:21:51,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 66 states have internal predecessors, (84), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-19 14:21:51,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-19 14:21:51,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:51,225 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:51,226 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:51,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:51,233 INFO L85 PathProgramCache]: Analyzing trace with hash 524704703, now seen corresponding path program 1 times [2021-11-19 14:21:51,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:51,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369592790] [2021-11-19 14:21:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:51,252 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:51,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:51,257 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:51,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:21:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:51,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:21:51,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:51,828 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 14:21:51,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:52,019 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-19 14:21:52,021 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:52,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369592790] [2021-11-19 14:21:52,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369592790] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:52,023 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:52,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:21:52,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297197036] [2021-11-19 14:21:52,026 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:52,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:21:52,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:52,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:21:52,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:21:52,094 INFO L87 Difference]: Start difference. First operand has 102 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 66 states have internal predecessors, (84), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:21:52,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:52,171 INFO L93 Difference]: Finished difference Result 196 states and 291 transitions. [2021-11-19 14:21:52,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:21:52,174 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 73 [2021-11-19 14:21:52,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:52,186 INFO L225 Difference]: With dead ends: 196 [2021-11-19 14:21:52,187 INFO L226 Difference]: Without dead ends: 97 [2021-11-19 14:21:52,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:21:52,197 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:52,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:21:52,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-19 14:21:52,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-11-19 14:21:52,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 62 states have internal predecessors, (76), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-19 14:21:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 131 transitions. [2021-11-19 14:21:52,265 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 131 transitions. Word has length 73 [2021-11-19 14:21:52,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:52,266 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 131 transitions. [2021-11-19 14:21:52,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 14:21:52,266 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 131 transitions. [2021-11-19 14:21:52,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-19 14:21:52,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:52,272 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:52,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:52,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:21:52,486 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:52,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:52,487 INFO L85 PathProgramCache]: Analyzing trace with hash -569763587, now seen corresponding path program 1 times [2021-11-19 14:21:52,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:52,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159308261] [2021-11-19 14:21:52,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:52,490 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:52,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:52,492 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:52,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:21:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:52,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:21:52,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-19 14:21:53,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-19 14:21:53,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:53,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159308261] [2021-11-19 14:21:53,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159308261] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:53,562 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:53,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-19 14:21:53,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038955334] [2021-11-19 14:21:53,563 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:53,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:21:53,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:53,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:21:53,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:21:53,572 INFO L87 Difference]: Start difference. First operand 97 states and 131 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-19 14:21:53,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:53,770 INFO L93 Difference]: Finished difference Result 196 states and 272 transitions. [2021-11-19 14:21:53,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:21:53,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 73 [2021-11-19 14:21:53,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:53,776 INFO L225 Difference]: With dead ends: 196 [2021-11-19 14:21:53,777 INFO L226 Difference]: Without dead ends: 97 [2021-11-19 14:21:53,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:21:53,784 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 56 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:53,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 457 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:21:53,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-19 14:21:53,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-11-19 14:21:53,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 62 states have internal predecessors, (75), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-19 14:21:53,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 130 transitions. [2021-11-19 14:21:53,827 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 130 transitions. Word has length 73 [2021-11-19 14:21:53,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:53,829 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 130 transitions. [2021-11-19 14:21:53,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-19 14:21:53,830 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 130 transitions. [2021-11-19 14:21:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-19 14:21:53,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:53,832 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:53,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:54,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:21:54,053 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:54,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:54,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1956548997, now seen corresponding path program 1 times [2021-11-19 14:21:54,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:54,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406614814] [2021-11-19 14:21:54,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:54,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:54,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:54,057 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:54,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:21:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:54,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:21:54,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:54,590 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-19 14:21:54,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:54,882 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-19 14:21:54,885 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:54,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406614814] [2021-11-19 14:21:54,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406614814] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:21:54,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:21:54,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2021-11-19 14:21:54,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677585296] [2021-11-19 14:21:54,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:54,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:21:54,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:54,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:21:54,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:21:54,889 INFO L87 Difference]: Start difference. First operand 97 states and 130 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-19 14:21:55,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:55,013 INFO L93 Difference]: Finished difference Result 182 states and 247 transitions. [2021-11-19 14:21:55,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:21:55,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 73 [2021-11-19 14:21:55,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:55,019 INFO L225 Difference]: With dead ends: 182 [2021-11-19 14:21:55,019 INFO L226 Difference]: Without dead ends: 99 [2021-11-19 14:21:55,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:21:55,021 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 2 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:55,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 602 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:21:55,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-19 14:21:55,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-11-19 14:21:55,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 64 states have internal predecessors, (76), 28 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2021-11-19 14:21:55,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 133 transitions. [2021-11-19 14:21:55,039 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 133 transitions. Word has length 73 [2021-11-19 14:21:55,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:55,040 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 133 transitions. [2021-11-19 14:21:55,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-19 14:21:55,041 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 133 transitions. [2021-11-19 14:21:55,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 14:21:55,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:55,043 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:55,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:55,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:21:55,257 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:55,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:55,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1237560575, now seen corresponding path program 1 times [2021-11-19 14:21:55,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:55,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920477920] [2021-11-19 14:21:55,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:55,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:55,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:55,262 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:55,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:21:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:55,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:21:55,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-19 14:21:55,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:56,234 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-19 14:21:56,235 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:56,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920477920] [2021-11-19 14:21:56,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920477920] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:56,235 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:56,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-19 14:21:56,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720513326] [2021-11-19 14:21:56,236 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:56,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:21:56,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:56,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:21:56,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:21:56,238 INFO L87 Difference]: Start difference. First operand 99 states and 133 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 9 states have internal predecessors, (56), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-19 14:21:56,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:56,559 INFO L93 Difference]: Finished difference Result 187 states and 254 transitions. [2021-11-19 14:21:56,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:21:56,560 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 9 states have internal predecessors, (56), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 75 [2021-11-19 14:21:56,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:56,562 INFO L225 Difference]: With dead ends: 187 [2021-11-19 14:21:56,562 INFO L226 Difference]: Without dead ends: 99 [2021-11-19 14:21:56,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:21:56,564 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 79 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:56,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 512 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:21:56,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-19 14:21:56,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-11-19 14:21:56,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 64 states have internal predecessors, (75), 28 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2021-11-19 14:21:56,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 132 transitions. [2021-11-19 14:21:56,588 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 132 transitions. Word has length 75 [2021-11-19 14:21:56,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:56,591 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 132 transitions. [2021-11-19 14:21:56,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 9 states have internal predecessors, (56), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-19 14:21:56,591 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 132 transitions. [2021-11-19 14:21:56,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 14:21:56,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:56,596 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:56,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:56,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:21:56,810 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:56,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:56,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1187141198, now seen corresponding path program 1 times [2021-11-19 14:21:56,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:56,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28518072] [2021-11-19 14:21:56,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:56,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:56,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:56,812 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:56,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:21:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:57,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:21:57,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-19 14:21:57,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:57,920 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-19 14:21:57,921 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:57,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28518072] [2021-11-19 14:21:57,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28518072] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:57,921 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:57,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2021-11-19 14:21:57,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967642616] [2021-11-19 14:21:57,922 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:57,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:21:57,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:57,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:21:57,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:21:57,924 INFO L87 Difference]: Start difference. First operand 99 states and 132 transitions. Second operand has 11 states, 10 states have (on average 5.9) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-19 14:21:58,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:58,389 INFO L93 Difference]: Finished difference Result 196 states and 267 transitions. [2021-11-19 14:21:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:21:58,391 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.9) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 77 [2021-11-19 14:21:58,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:58,393 INFO L225 Difference]: With dead ends: 196 [2021-11-19 14:21:58,393 INFO L226 Difference]: Without dead ends: 107 [2021-11-19 14:21:58,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:21:58,395 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 96 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:58,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 816 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 14:21:58,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-19 14:21:58,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 100. [2021-11-19 14:21:58,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 65 states have internal predecessors, (76), 28 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2021-11-19 14:21:58,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 133 transitions. [2021-11-19 14:21:58,411 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 133 transitions. Word has length 77 [2021-11-19 14:21:58,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:58,412 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 133 transitions. [2021-11-19 14:21:58,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.9) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-19 14:21:58,413 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 133 transitions. [2021-11-19 14:21:58,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 14:21:58,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:58,415 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:58,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:21:58,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:21:58,636 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:58,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:58,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1548809988, now seen corresponding path program 1 times [2021-11-19 14:21:58,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:58,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703690348] [2021-11-19 14:21:58,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:58,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:58,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:58,650 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:58,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:21:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:58,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:21:58,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:21:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-19 14:21:59,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:21:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-19 14:21:59,463 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:21:59,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703690348] [2021-11-19 14:21:59,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703690348] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:21:59,463 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:21:59,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 3] imperfect sequences [] total 8 [2021-11-19 14:21:59,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145976216] [2021-11-19 14:21:59,463 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:21:59,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:21:59,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:21:59,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:21:59,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:21:59,465 INFO L87 Difference]: Start difference. First operand 100 states and 133 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-19 14:21:59,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:21:59,821 INFO L93 Difference]: Finished difference Result 192 states and 263 transitions. [2021-11-19 14:21:59,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:21:59,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 78 [2021-11-19 14:21:59,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:21:59,823 INFO L225 Difference]: With dead ends: 192 [2021-11-19 14:21:59,824 INFO L226 Difference]: Without dead ends: 106 [2021-11-19 14:21:59,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:21:59,825 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 61 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:21:59,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 614 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:21:59,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-19 14:21:59,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2021-11-19 14:21:59,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 64 states have (on average 1.203125) internal successors, (77), 66 states have internal predecessors, (77), 28 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2021-11-19 14:21:59,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 134 transitions. [2021-11-19 14:21:59,851 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 134 transitions. Word has length 78 [2021-11-19 14:21:59,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:21:59,851 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 134 transitions. [2021-11-19 14:21:59,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-19 14:21:59,852 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 134 transitions. [2021-11-19 14:21:59,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-19 14:21:59,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:59,861 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:21:59,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:00,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:00,078 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:00,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:00,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1185344546, now seen corresponding path program 1 times [2021-11-19 14:22:00,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:00,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204488958] [2021-11-19 14:22:00,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:00,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:00,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:00,080 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:00,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:22:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:00,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:22:00,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:00,667 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-19 14:22:00,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:00,946 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-19 14:22:00,947 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:00,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204488958] [2021-11-19 14:22:00,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204488958] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:22:00,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:22:00,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2021-11-19 14:22:00,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129645856] [2021-11-19 14:22:00,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:00,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:22:00,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:00,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:22:00,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:22:00,949 INFO L87 Difference]: Start difference. First operand 101 states and 134 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 14:22:01,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:01,068 INFO L93 Difference]: Finished difference Result 191 states and 256 transitions. [2021-11-19 14:22:01,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:22:01,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2021-11-19 14:22:01,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:01,076 INFO L225 Difference]: With dead ends: 191 [2021-11-19 14:22:01,077 INFO L226 Difference]: Without dead ends: 104 [2021-11-19 14:22:01,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:22:01,079 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 4 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:01,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 728 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:22:01,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-11-19 14:22:01,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2021-11-19 14:22:01,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 65 states have (on average 1.2) internal successors, (78), 67 states have internal predecessors, (78), 28 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2021-11-19 14:22:01,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 135 transitions. [2021-11-19 14:22:01,108 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 135 transitions. Word has length 86 [2021-11-19 14:22:01,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:01,108 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 135 transitions. [2021-11-19 14:22:01,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 14:22:01,109 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 135 transitions. [2021-11-19 14:22:01,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-19 14:22:01,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:01,114 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:01,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:01,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:01,335 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:01,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:01,335 INFO L85 PathProgramCache]: Analyzing trace with hash 172862485, now seen corresponding path program 1 times [2021-11-19 14:22:01,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:01,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086588228] [2021-11-19 14:22:01,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:01,336 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:01,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:01,338 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:01,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:22:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:01,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 14:22:01,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-19 14:22:03,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:03,784 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-19 14:22:03,784 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:03,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086588228] [2021-11-19 14:22:03,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086588228] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:22:03,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1373643492] [2021-11-19 14:22:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:03,786 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:22:03,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:22:03,791 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:22:03,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 14:22:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:04,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:22:04,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 14:22:04,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:04,871 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-19 14:22:04,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1373643492] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:22:04,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-19 14:22:04,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 8, 8] total 23 [2021-11-19 14:22:04,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722798144] [2021-11-19 14:22:04,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:04,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:22:04,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:04,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:22:04,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:22:04,873 INFO L87 Difference]: Start difference. First operand 102 states and 135 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-19 14:22:05,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:05,093 INFO L93 Difference]: Finished difference Result 196 states and 262 transitions. [2021-11-19 14:22:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:22:05,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 88 [2021-11-19 14:22:05,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:05,099 INFO L225 Difference]: With dead ends: 196 [2021-11-19 14:22:05,100 INFO L226 Difference]: Without dead ends: 108 [2021-11-19 14:22:05,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 326 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2021-11-19 14:22:05,102 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 8 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:05,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 838 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:22:05,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-19 14:22:05,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2021-11-19 14:22:05,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.196969696969697) internal successors, (79), 68 states have internal predecessors, (79), 28 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2021-11-19 14:22:05,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 136 transitions. [2021-11-19 14:22:05,116 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 136 transitions. Word has length 88 [2021-11-19 14:22:05,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:05,117 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 136 transitions. [2021-11-19 14:22:05,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-19 14:22:05,117 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 136 transitions. [2021-11-19 14:22:05,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-19 14:22:05,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:05,120 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:05,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:05,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:05,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:22:05,547 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:05,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:05,548 INFO L85 PathProgramCache]: Analyzing trace with hash 759251201, now seen corresponding path program 1 times [2021-11-19 14:22:05,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:05,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197916118] [2021-11-19 14:22:05,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:05,549 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:05,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:05,550 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:05,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:22:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:05,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-19 14:22:05,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:06,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-19 14:22:06,290 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-19 14:22:06,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2021-11-19 14:22:07,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2021-11-19 14:22:08,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:22:10,847 INFO L354 Elim1Store]: treesize reduction 1590, result has 8.4 percent of original size [2021-11-19 14:22:10,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 7604 treesize of output 4147 [2021-11-19 14:22:10,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:22:10,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:22:19,880 WARN L227 SmtUtils]: Spent 8.93s on a formula simplification. DAG size of input: 193 DAG size of output: 76 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:22:19,882 INFO L354 Elim1Store]: treesize reduction 2840, result has 9.7 percent of original size [2021-11-19 14:22:19,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 34754 treesize of output 10876 [2021-11-19 14:22:20,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:22:20,851 INFO L354 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2021-11-19 14:22:20,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 25 [2021-11-19 14:22:21,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:22:21,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:22:21,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 778 treesize of output 598 [2021-11-19 14:22:23,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:22:23,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:22:23,237 INFO L354 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2021-11-19 14:22:23,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 380 treesize of output 188 [2021-11-19 14:22:25,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:22:25,618 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-19 14:22:25,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 610 treesize of output 351 [2021-11-19 14:22:26,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:22:26,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:22:26,532 INFO L354 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2021-11-19 14:22:26,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 316 treesize of output 153 [2021-11-19 14:22:26,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:22:26,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:22:26,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:22:26,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 21 [2021-11-19 14:22:26,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:22:26,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:22:26,756 INFO L354 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2021-11-19 14:22:26,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 104 treesize of output 21 [2021-11-19 14:22:26,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:22:26,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:22:26,782 INFO L354 Elim1Store]: treesize reduction 143, result has 0.7 percent of original size [2021-11-19 14:22:26,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 408 treesize of output 271 [2021-11-19 14:22:26,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:22:26,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:22:26,809 INFO L354 Elim1Store]: treesize reduction 179, result has 0.6 percent of original size [2021-11-19 14:22:26,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 379 treesize of output 277 [2021-11-19 14:22:26,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:22:26,830 INFO L354 Elim1Store]: treesize reduction 269, result has 0.4 percent of original size [2021-11-19 14:22:26,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 280 treesize of output 214 [2021-11-19 14:22:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-19 14:22:31,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:32,787 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 3602 treesize of output 3530 [2021-11-19 14:23:20,475 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 2549 treesize of output 2321 [2021-11-19 14:23:41,546 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 10 treesize of output 6 [2021-11-19 14:23:46,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:23:46,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 204 [2021-11-19 14:23:47,171 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-19 14:23:47,172 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:47,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197916118] [2021-11-19 14:23:47,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197916118] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:23:47,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:23:47,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [23] total 36 [2021-11-19 14:23:47,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030513831] [2021-11-19 14:23:47,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:47,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 14:23:47,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:47,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 14:23:47,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1157, Unknown=5, NotChecked=0, Total=1260 [2021-11-19 14:23:47,175 INFO L87 Difference]: Start difference. First operand 103 states and 136 transitions. Second operand has 15 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-19 14:23:57,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:57,117 INFO L93 Difference]: Finished difference Result 141 states and 194 transitions. [2021-11-19 14:23:57,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:23:57,118 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 89 [2021-11-19 14:23:57,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:57,120 INFO L225 Difference]: With dead ends: 141 [2021-11-19 14:23:57,120 INFO L226 Difference]: Without dead ends: 139 [2021-11-19 14:23:57,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 131 SyntacticMatches, 11 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 39.2s TimeCoverageRelationStatistics Valid=119, Invalid=1514, Unknown=7, NotChecked=0, Total=1640 [2021-11-19 14:23:57,122 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 26 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 286 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:57,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 1291 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 245 Invalid, 0 Unknown, 286 Unchecked, 1.7s Time] [2021-11-19 14:23:57,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-19 14:23:57,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2021-11-19 14:23:57,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 87 states have internal predecessors, (97), 43 states have call successors, (43), 9 states have call predecessors, (43), 11 states have return successors, (51), 41 states have call predecessors, (51), 42 states have call successors, (51) [2021-11-19 14:23:57,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 191 transitions. [2021-11-19 14:23:57,141 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 191 transitions. Word has length 89 [2021-11-19 14:23:57,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:57,141 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 191 transitions. [2021-11-19 14:23:57,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-19 14:23:57,142 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 191 transitions. [2021-11-19 14:23:57,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-19 14:23:57,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:57,144 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:23:57,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:57,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:57,367 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:57,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:57,367 INFO L85 PathProgramCache]: Analyzing trace with hash -50095425, now seen corresponding path program 1 times [2021-11-19 14:23:57,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:57,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762881544] [2021-11-19 14:23:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:57,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:57,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:57,369 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:57,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:23:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:57,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-19 14:23:57,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:58,297 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 9 treesize of output 5 [2021-11-19 14:24:00,307 INFO L354 Elim1Store]: treesize reduction 1645, result has 19.9 percent of original size [2021-11-19 14:24:00,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 1235 treesize of output 637 [2021-11-19 14:24:00,339 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 4701 treesize of output 4413 [2021-11-19 14:25:01,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:25:01,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:25:02,385 INFO L354 Elim1Store]: treesize reduction 42, result has 70.2 percent of original size [2021-11-19 14:25:02,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 144 treesize of output 206 [2021-11-19 14:25:03,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:25:03,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:25:03,601 INFO L354 Elim1Store]: treesize reduction 34, result has 75.2 percent of original size [2021-11-19 14:25:03,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 156 treesize of output 218 [2021-11-19 14:25:10,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:25:10,905 INFO L354 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2021-11-19 14:25:10,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 57 treesize of output 25 [2021-11-19 14:25:13,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:25:13,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:25:13,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 14:25:13,834 INFO L354 Elim1Store]: treesize reduction 22, result has 62.7 percent of original size [2021-11-19 14:25:13,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 205 treesize of output 107 [2021-11-19 14:25:28,795 WARN L227 SmtUtils]: Spent 14.10s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 14:25:48,617 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 14:25:48,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:25:50,560 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 10 treesize of output 6 [2021-11-19 14:25:50,869 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-19 14:25:50,869 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:25:50,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762881544] [2021-11-19 14:25:50,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762881544] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:25:50,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:25:50,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [18] total 27 [2021-11-19 14:25:50,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450777339] [2021-11-19 14:25:50,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:25:50,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:25:50,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:25:50,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:25:50,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2021-11-19 14:25:50,872 INFO L87 Difference]: Start difference. First operand 138 states and 191 transitions. Second operand has 11 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-19 14:25:53,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:25:53,511 INFO L93 Difference]: Finished difference Result 233 states and 326 transitions. [2021-11-19 14:25:53,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:25:53,512 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 89 [2021-11-19 14:25:53,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:25:53,514 INFO L225 Difference]: With dead ends: 233 [2021-11-19 14:25:53,515 INFO L226 Difference]: Without dead ends: 144 [2021-11-19 14:25:53,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2021-11-19 14:25:53,517 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 54 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:25:53,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 857 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 14:25:53,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-19 14:25:53,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2021-11-19 14:25:53,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 87 states have (on average 1.1724137931034482) internal successors, (102), 92 states have internal predecessors, (102), 43 states have call successors, (43), 9 states have call predecessors, (43), 12 states have return successors, (56), 41 states have call predecessors, (56), 42 states have call successors, (56) [2021-11-19 14:25:53,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 201 transitions. [2021-11-19 14:25:53,538 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 201 transitions. Word has length 89 [2021-11-19 14:25:53,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:25:53,538 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 201 transitions. [2021-11-19 14:25:53,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-19 14:25:53,539 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 201 transitions. [2021-11-19 14:25:53,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-19 14:25:53,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:25:53,541 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:25:53,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:25:53,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:25:53,763 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:25:53,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:25:53,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1974343619, now seen corresponding path program 1 times [2021-11-19 14:25:53,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:25:53,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621778250] [2021-11-19 14:25:53,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:25:53,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:25:53,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:25:53,766 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:25:53,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:25:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:25:54,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-19 14:25:54,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:25:54,956 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-19 14:25:54,957 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 1 case distinctions, treesize of input 36 treesize of output 23 [2021-11-19 14:26:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-19 14:26:01,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:26:03,174 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 29 treesize of output 21 [2021-11-19 14:26:08,833 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 29 treesize of output 21 [2021-11-19 14:26:11,958 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:26:11,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 39 [2021-11-19 14:26:47,980 WARN L227 SmtUtils]: Spent 12.85s on a formula simplification. DAG size of input: 61 DAG size of output: 46 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:26:47,980 INFO L354 Elim1Store]: treesize reduction 67, result has 55.3 percent of original size [2021-11-19 14:26:47,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 468 treesize of output 496 [2021-11-19 14:26:48,279 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2021-11-19 14:26:48,280 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 440 treesize of output 460 [2021-11-19 14:27:49,108 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 4 [2021-11-19 14:28:01,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:28:01,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-19 14:28:02,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-11-19 14:28:49,980 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-19 14:28:50,176 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-19 14:28:50,354 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-19 14:29:04,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:29:04,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2021-11-19 14:29:04,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:29:04,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:29:04,092 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-19 14:29:04,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2021-11-19 14:29:04,187 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-19 14:29:04,188 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 15 treesize of output 9 [2021-11-19 14:29:04,491 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-19 14:29:06,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 14:29:06,900 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:29:06,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 88 [2021-11-19 14:29:08,861 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-19 14:29:08,861 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:08,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621778250] [2021-11-19 14:29:08,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621778250] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:29:08,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [774060770] [2021-11-19 14:29:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:08,862 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:29:08,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:29:08,874 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:29:08,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be79b423-531f-4a79-b2e4-d53e802f49b1/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 14:29:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:09,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-19 14:29:09,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:09,739 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-19 14:29:09,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 56 [2021-11-19 14:29:09,835 INFO L354 Elim1Store]: treesize reduction 47, result has 24.2 percent of original size [2021-11-19 14:29:09,835 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 1 case distinctions, treesize of input 83 treesize of output 50 [2021-11-19 14:29:44,424 INFO L354 Elim1Store]: treesize reduction 222, result has 0.4 percent of original size [2021-11-19 14:29:44,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 114 treesize of output 1 [2021-11-19 14:29:44,555 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-19 14:29:44,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:30:06,092 WARN L838 $PredicateComparison]: unable to prove that (or (= |c_aws_linked_list_node_next_is_valid_#in~node.base| (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_aws_linked_list_node_next_is_valid_#in~node.base|) |c_aws_linked_list_node_next_is_valid_#in~node.offset|)) (bvadd (_ bv8 64) (select (select |c_#memory_$Pointer$.offset| |c_aws_linked_list_node_next_is_valid_#in~node.base|) |c_aws_linked_list_node_next_is_valid_#in~node.offset|)))) (and (forall ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_6| (_ BitVec 64)) (|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_7| (_ BitVec 64))) (= |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_7| (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_7|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_6|))) (forall ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_6| (_ BitVec 64)) (|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_7| (_ BitVec 64))) (= (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_7|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_6|)) (bvadd (_ bv8 64) (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_7|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_6|))) |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_7|)) (forall ((|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_6| (_ BitVec 64)) (|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_7| (_ BitVec 64))) (= (bvadd (_ bv16 64) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_6|) (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_7|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_6|)))) (= |c_aws_linked_list_node_next_is_valid_#res| (_ bv0 8))) is different from false [2021-11-19 14:30:23,407 INFO L354 Elim1Store]: treesize reduction 321, result has 34.5 percent of original size [2021-11-19 14:30:23,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 2504 treesize of output 2360 [2021-11-19 14:30:23,440 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 9291 treesize of output 8915 [2021-11-19 14:30:24,442 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2021-11-19 14:30:24,442 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 6850 treesize of output 6834