./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:23:59,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:23:59,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:23:59,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:23:59,492 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:23:59,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:23:59,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:23:59,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:23:59,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:23:59,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:23:59,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:23:59,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:23:59,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:23:59,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:23:59,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:23:59,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:23:59,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:23:59,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:23:59,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:23:59,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:23:59,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:23:59,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:23:59,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:23:59,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:23:59,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:23:59,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:23:59,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:23:59,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:23:59,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:23:59,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:23:59,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:23:59,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:23:59,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:23:59,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:23:59,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:23:59,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:23:59,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:23:59,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:23:59,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:23:59,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:23:59,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:23:59,573 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-12 23:23:59,623 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:23:59,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:23:59,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:23:59,632 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:23:59,632 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:23:59,632 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:23:59,633 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:23:59,633 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:23:59,633 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:23:59,633 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:23:59,635 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:23:59,635 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:23:59,635 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:23:59,635 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:23:59,636 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:23:59,636 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:23:59,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:23:59,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:23:59,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:23:59,638 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:23:59,638 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:23:59,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:23:59,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:23:59,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:23:59,639 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:23:59,639 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:23:59,640 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:23:59,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:23:59,640 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:23:59,640 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:23:59,641 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:23:59,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:23:59,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:23:59,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:23:59,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:23:59,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:23:59,642 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:23:59,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:23:59,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:23:59,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:23:59,643 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_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 [2021-11-12 23:23:59,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:23:59,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:23:59,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:23:59,936 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:23:59,937 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:23:59,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2021-11-12 23:24:00,029 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/data/8eaf96197/35be52831e9b44349d85cc5b3b95481f/FLAG7f4c84502 [2021-11-12 23:24:00,621 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:24:00,622 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2021-11-12 23:24:00,655 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/data/8eaf96197/35be52831e9b44349d85cc5b3b95481f/FLAG7f4c84502 [2021-11-12 23:24:00,850 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/data/8eaf96197/35be52831e9b44349d85cc5b3b95481f [2021-11-12 23:24:00,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:24:00,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:24:00,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:24:00,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:24:00,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:24:00,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:24:00" (1/1) ... [2021-11-12 23:24:00,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ae4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:00, skipping insertion in model container [2021-11-12 23:24:00,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:24:00" (1/1) ... [2021-11-12 23:24:00,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:24:00,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:24:01,379 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i[37019,37032] [2021-11-12 23:24:01,501 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i[47352,47365] [2021-11-12 23:24:01,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:24:01,527 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:24:01,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1cecb748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:01, skipping insertion in model container [2021-11-12 23:24:01,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:24:01,529 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:24:01,531 INFO L158 Benchmark]: Toolchain (without parser) took 675.87ms. Allocated memory is still 96.5MB. Free memory was 58.5MB in the beginning and 60.0MB in the end (delta: -1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:24:01,532 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory was 69.3MB in the beginning and 69.3MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:24:01,533 INFO L158 Benchmark]: CACSL2BoogieTranslator took 669.81ms. Allocated memory is still 96.5MB. Free memory was 58.2MB in the beginning and 60.0MB in the end (delta: -1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:24:01,536 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory was 69.3MB in the beginning and 69.3MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 669.81ms. Allocated memory is still 96.5MB. Free memory was 58.2MB in the beginning and 60.0MB in the end (delta: -1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:24:03,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:24:03,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:24:03,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:24:03,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:24:03,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:24:03,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:24:03,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:24:03,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:24:03,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:24:03,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:24:03,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:24:03,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:24:03,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:24:03,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:24:03,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:24:03,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:24:03,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:24:03,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:24:03,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:24:03,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:24:03,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:24:03,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:24:03,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:24:03,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:24:03,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:24:03,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:24:03,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:24:03,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:24:03,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:24:03,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:24:03,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:24:03,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:24:03,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:24:03,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:24:03,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:24:04,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:24:04,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:24:04,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:24:04,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:24:04,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:24:04,016 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-12 23:24:04,062 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:24:04,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:24:04,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:24:04,064 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:24:04,065 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:24:04,065 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:24:04,065 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:24:04,065 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:24:04,066 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:24:04,066 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:24:04,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:24:04,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:24:04,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:24:04,069 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:24:04,069 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:24:04,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:24:04,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:24:04,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:24:04,070 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:24:04,070 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:24:04,071 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:24:04,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:24:04,071 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:24:04,071 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:24:04,072 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:24:04,072 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:24:04,072 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:24:04,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:24:04,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:24:04,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:24:04,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:24:04,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:24:04,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:24:04,074 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:24:04,075 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:24:04,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:24:04,075 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:24:04,076 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_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 [2021-11-12 23:24:04,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:24:04,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:24:04,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:24:04,525 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:24:04,526 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:24:04,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2021-11-12 23:24:04,592 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/data/b4d958406/7f2d55d6b3254da0925e7cb0c61a512b/FLAG173525b50 [2021-11-12 23:24:05,291 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:24:05,292 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2021-11-12 23:24:05,310 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/data/b4d958406/7f2d55d6b3254da0925e7cb0c61a512b/FLAG173525b50 [2021-11-12 23:24:05,495 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/data/b4d958406/7f2d55d6b3254da0925e7cb0c61a512b [2021-11-12 23:24:05,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:24:05,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:24:05,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:24:05,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:24:05,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:24:05,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:24:05" (1/1) ... [2021-11-12 23:24:05,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2477b6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:05, skipping insertion in model container [2021-11-12 23:24:05,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:24:05" (1/1) ... [2021-11-12 23:24:05,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:24:05,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:24:06,232 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i[37019,37032] [2021-11-12 23:24:06,407 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i[47352,47365] [2021-11-12 23:24:06,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:24:06,473 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:24:06,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:24:06,533 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i[37019,37032] [2021-11-12 23:24:06,634 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i[47352,47365] [2021-11-12 23:24:06,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:24:06,661 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:24:06,697 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i[37019,37032] [2021-11-12 23:24:06,731 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i[47352,47365] [2021-11-12 23:24:06,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:24:06,812 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:24:06,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:06 WrapperNode [2021-11-12 23:24:06,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:24:06,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:24:06,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:24:06,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:24:06,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:06" (1/1) ... [2021-11-12 23:24:06,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:06" (1/1) ... [2021-11-12 23:24:06,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:24:06,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:24:06,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:24:06,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:24:06,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:06" (1/1) ... [2021-11-12 23:24:06,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:06" (1/1) ... [2021-11-12 23:24:06,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:06" (1/1) ... [2021-11-12 23:24:06,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:06" (1/1) ... [2021-11-12 23:24:07,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:06" (1/1) ... [2021-11-12 23:24:07,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:06" (1/1) ... [2021-11-12 23:24:07,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:06" (1/1) ... [2021-11-12 23:24:07,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:24:07,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:24:07,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:24:07,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:24:07,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:06" (1/1) ... [2021-11-12 23:24:07,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:24:07,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:24:07,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:24:07,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:24:07,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:24:07,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:24:07,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:24:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:24:07,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:24:07,128 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 23:24:07,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:24:07,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:24:07,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:24:07,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:24:07,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:24:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:24:07,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:24:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:24:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:24:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:24:07,424 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 23:24:12,121 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:24:12,121 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-12 23:24:12,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:24:12 BoogieIcfgContainer [2021-11-12 23:24:12,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:24:12,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:24:12,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:24:12,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:24:12,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:24:05" (1/3) ... [2021-11-12 23:24:12,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f16446c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:24:12, skipping insertion in model container [2021-11-12 23:24:12,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:24:06" (2/3) ... [2021-11-12 23:24:12,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f16446c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:24:12, skipping insertion in model container [2021-11-12 23:24:12,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:24:12" (3/3) ... [2021-11-12 23:24:12,132 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test2-2.i [2021-11-12 23:24:12,138 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:24:12,138 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-12 23:24:12,182 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:24:12,189 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:24:12,189 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-12 23:24:12,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 1081 states, 537 states have (on average 2.2364990689013036) internal successors, (1201), 1075 states have internal predecessors, (1201), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:24:12,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 23:24:12,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:12,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 23:24:12,240 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:24:12,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:12,250 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-12 23:24:12,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:12,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15646153] [2021-11-12 23:24:12,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:12,263 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:12,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:12,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:12,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:24:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:12,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:24:12,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:12,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:24:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:12,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:12,585 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:12,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15646153] [2021-11-12 23:24:12,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15646153] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:12,587 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:12,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:24:12,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028983720] [2021-11-12 23:24:12,590 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:12,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:24:12,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:12,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:24:12,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:24:12,632 INFO L87 Difference]: Start difference. First operand has 1081 states, 537 states have (on average 2.2364990689013036) internal successors, (1201), 1075 states have internal predecessors, (1201), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:14,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:14,749 INFO L93 Difference]: Finished difference Result 1245 states and 1321 transitions. [2021-11-12 23:24:14,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:24:14,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-12 23:24:14,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:14,776 INFO L225 Difference]: With dead ends: 1245 [2021-11-12 23:24:14,776 INFO L226 Difference]: Without dead ends: 1243 [2021-11-12 23:24:14,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:24:14,781 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 995 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1628.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.35ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2010.98ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:14,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 805 Invalid, 656 Unknown, 0 Unchecked, 20.35ms Time], IncrementalHoareTripleChecker [16 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 2010.98ms Time] [2021-11-12 23:24:14,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2021-11-12 23:24:14,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1065. [2021-11-12 23:24:14,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 537 states have (on average 2.080074487895717) internal successors, (1117), 1059 states have internal predecessors, (1117), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:24:14,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1133 transitions. [2021-11-12 23:24:14,882 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1133 transitions. Word has length 3 [2021-11-12 23:24:14,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:14,883 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 1133 transitions. [2021-11-12 23:24:14,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:14,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1133 transitions. [2021-11-12 23:24:14,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 23:24:14,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:14,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 23:24:14,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:15,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:15,095 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:24:15,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:15,095 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-12 23:24:15,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:15,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372343112] [2021-11-12 23:24:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:15,096 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:15,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:15,097 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:15,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:24:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:15,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:24:15,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:15,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:24:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:15,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:15,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:15,379 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:15,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372343112] [2021-11-12 23:24:15,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372343112] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:15,380 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:15,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 23:24:15,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025035624] [2021-11-12 23:24:15,381 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:15,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:24:15,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:15,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:24:15,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:24:15,383 INFO L87 Difference]: Start difference. First operand 1065 states and 1133 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:20,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:20,034 INFO L93 Difference]: Finished difference Result 1558 states and 1671 transitions. [2021-11-12 23:24:20,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:24:20,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-12 23:24:20,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:20,044 INFO L225 Difference]: With dead ends: 1558 [2021-11-12 23:24:20,044 INFO L226 Difference]: Without dead ends: 1558 [2021-11-12 23:24:20,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:24:20,046 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 1187 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3977.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.67ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4565.49ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:20,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 1610 Invalid, 1104 Unknown, 0 Unchecked, 18.67ms Time], IncrementalHoareTripleChecker [18 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 4565.49ms Time] [2021-11-12 23:24:20,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2021-11-12 23:24:20,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1100. [2021-11-12 23:24:20,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 581 states have (on average 2.0585197934595527) internal successors, (1196), 1094 states have internal predecessors, (1196), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:24:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1212 transitions. [2021-11-12 23:24:20,093 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1212 transitions. Word has length 3 [2021-11-12 23:24:20,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:20,094 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 1212 transitions. [2021-11-12 23:24:20,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:20,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1212 transitions. [2021-11-12 23:24:20,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:24:20,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:20,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:20,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:20,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:20,306 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:24:20,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:20,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-12 23:24:20,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:20,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271829022] [2021-11-12 23:24:20,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:20,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:20,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:20,309 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:20,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:24:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:20,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:24:20,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:20,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:24:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:20,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:20,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:20,509 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:20,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271829022] [2021-11-12 23:24:20,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271829022] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:20,510 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:20,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:24:20,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303856017] [2021-11-12 23:24:20,510 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:20,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:24:20,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:20,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:24:20,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:24:20,512 INFO L87 Difference]: Start difference. First operand 1100 states and 1212 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:22,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:22,297 INFO L93 Difference]: Finished difference Result 1277 states and 1416 transitions. [2021-11-12 23:24:22,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:24:22,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 23:24:22,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:22,306 INFO L225 Difference]: With dead ends: 1277 [2021-11-12 23:24:22,306 INFO L226 Difference]: Without dead ends: 1277 [2021-11-12 23:24:22,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:24:22,308 INFO L933 BasicCegarLoop]: 908 mSDtfsCounter, 816 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1440.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.29ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1739.94ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:22,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 1186 Invalid, 685 Unknown, 0 Unchecked, 8.29ms Time], IncrementalHoareTripleChecker [51 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 1739.94ms Time] [2021-11-12 23:24:22,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2021-11-12 23:24:22,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1053. [2021-11-12 23:24:22,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 581 states have (on average 1.972461273666093) internal successors, (1146), 1047 states have internal predecessors, (1146), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:24:22,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1162 transitions. [2021-11-12 23:24:22,340 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1162 transitions. Word has length 8 [2021-11-12 23:24:22,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:22,341 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 1162 transitions. [2021-11-12 23:24:22,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:22,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1162 transitions. [2021-11-12 23:24:22,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:24:22,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:22,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:22,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:22,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:22,553 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:24:22,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:22,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-12 23:24:22,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:22,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191921630] [2021-11-12 23:24:22,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:22,555 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:22,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:22,556 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:22,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:24:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:22,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:24:22,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:22,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:24:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:22,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:22,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:22,798 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:22,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191921630] [2021-11-12 23:24:22,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191921630] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:22,799 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:22,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 23:24:22,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673833255] [2021-11-12 23:24:22,799 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:22,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:24:22,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:22,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:24:22,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:24:22,800 INFO L87 Difference]: Start difference. First operand 1053 states and 1162 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:26,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:26,504 INFO L93 Difference]: Finished difference Result 1307 states and 1410 transitions. [2021-11-12 23:24:26,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:24:26,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 23:24:26,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:26,512 INFO L225 Difference]: With dead ends: 1307 [2021-11-12 23:24:26,512 INFO L226 Difference]: Without dead ends: 1307 [2021-11-12 23:24:26,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:24:26,514 INFO L933 BasicCegarLoop]: 1068 mSDtfsCounter, 1042 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3231.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.79ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3649.95ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:26,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1048 Valid, 1510 Invalid, 710 Unknown, 0 Unchecked, 16.79ms Time], IncrementalHoareTripleChecker [19 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 3649.95ms Time] [2021-11-12 23:24:26,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2021-11-12 23:24:26,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1043. [2021-11-12 23:24:26,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 581 states have (on average 1.9500860585197934) internal successors, (1133), 1037 states have internal predecessors, (1133), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:24:26,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1149 transitions. [2021-11-12 23:24:26,545 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1149 transitions. Word has length 8 [2021-11-12 23:24:26,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:26,546 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 1149 transitions. [2021-11-12 23:24:26,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:26,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1149 transitions. [2021-11-12 23:24:26,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:24:26,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:26,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:26,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-12 23:24:26,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:26,772 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr429REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:24:26,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:26,773 INFO L85 PathProgramCache]: Analyzing trace with hash 871160987, now seen corresponding path program 1 times [2021-11-12 23:24:26,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:26,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537640705] [2021-11-12 23:24:26,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:26,774 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:26,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:26,774 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:26,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:24:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:26,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:24:26,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:27,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:27,102 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:27,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537640705] [2021-11-12 23:24:27,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537640705] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:27,102 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:27,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:24:27,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533328310] [2021-11-12 23:24:27,103 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:27,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:24:27,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:27,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:24:27,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:24:27,105 INFO L87 Difference]: Start difference. First operand 1043 states and 1149 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:27,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:27,386 INFO L93 Difference]: Finished difference Result 1516 states and 1666 transitions. [2021-11-12 23:24:27,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:24:27,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-12 23:24:27,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:27,395 INFO L225 Difference]: With dead ends: 1516 [2021-11-12 23:24:27,395 INFO L226 Difference]: Without dead ends: 1516 [2021-11-12 23:24:27,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:24:27,396 INFO L933 BasicCegarLoop]: 1133 mSDtfsCounter, 570 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 220.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.26ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 260.17ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:27,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 2042 Invalid, 119 Unknown, 0 Unchecked, 4.26ms Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 260.17ms Time] [2021-11-12 23:24:27,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-11-12 23:24:27,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1223. [2021-11-12 23:24:27,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 756 states have (on average 1.8981481481481481) internal successors, (1435), 1217 states have internal predecessors, (1435), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:24:27,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1461 transitions. [2021-11-12 23:24:27,431 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1461 transitions. Word has length 11 [2021-11-12 23:24:27,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:27,431 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1461 transitions. [2021-11-12 23:24:27,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:27,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1461 transitions. [2021-11-12 23:24:27,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:24:27,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:27,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:27,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:27,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:27,643 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:24:27,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:27,643 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2021-11-12 23:24:27,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:27,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892405899] [2021-11-12 23:24:27,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:27,644 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:27,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:27,645 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:27,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:24:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:27,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:24:27,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:27,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:27,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:27,818 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:27,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892405899] [2021-11-12 23:24:27,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892405899] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:27,818 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:27,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:24:27,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882887123] [2021-11-12 23:24:27,819 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:27,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:24:27,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:27,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:24:27,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:24:27,820 INFO L87 Difference]: Start difference. First operand 1223 states and 1461 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:27,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:27,866 INFO L93 Difference]: Finished difference Result 1377 states and 1601 transitions. [2021-11-12 23:24:27,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:24:27,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-12 23:24:27,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:27,874 INFO L225 Difference]: With dead ends: 1377 [2021-11-12 23:24:27,875 INFO L226 Difference]: Without dead ends: 1377 [2021-11-12 23:24:27,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:24:27,878 INFO L933 BasicCegarLoop]: 1224 mSDtfsCounter, 808 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.49ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.92ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:27,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [813 Valid, 2048 Invalid, 18 Unknown, 0 Unchecked, 4.49ms Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 24.92ms Time] [2021-11-12 23:24:27,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2021-11-12 23:24:27,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1163. [2021-11-12 23:24:27,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 720 states have (on average 1.8736111111111111) internal successors, (1349), 1157 states have internal predecessors, (1349), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:24:27,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1375 transitions. [2021-11-12 23:24:27,917 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1375 transitions. Word has length 13 [2021-11-12 23:24:27,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:27,918 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 1375 transitions. [2021-11-12 23:24:27,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:27,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1375 transitions. [2021-11-12 23:24:27,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 23:24:27,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:27,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:27,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:28,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:28,138 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr534ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:24:28,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:28,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1723272146, now seen corresponding path program 1 times [2021-11-12 23:24:28,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:28,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237551390] [2021-11-12 23:24:28,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:28,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:28,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:28,142 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:28,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:24:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:28,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:24:28,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:28,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:24:28,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:24:28,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:24:28,387 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-12 23:24:28,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-12 23:24:28,463 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-12 23:24:28,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-12 23:24:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:28,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:28,563 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:28,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237551390] [2021-11-12 23:24:28,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237551390] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:28,563 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:28,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:24:28,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973224598] [2021-11-12 23:24:28,563 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:28,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:24:28,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:28,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:24:28,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:24:28,565 INFO L87 Difference]: Start difference. First operand 1163 states and 1375 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:30,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:30,586 INFO L93 Difference]: Finished difference Result 1500 states and 1763 transitions. [2021-11-12 23:24:30,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:24:30,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-12 23:24:30,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:30,594 INFO L225 Difference]: With dead ends: 1500 [2021-11-12 23:24:30,594 INFO L226 Difference]: Without dead ends: 1500 [2021-11-12 23:24:30,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:24:30,595 INFO L933 BasicCegarLoop]: 986 mSDtfsCounter, 342 mSDsluCounter, 3706 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1712.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 4692 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.16ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1953.96ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:30,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 4692 Invalid, 411 Unknown, 0 Unchecked, 7.16ms Time], IncrementalHoareTripleChecker [2 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 1953.96ms Time] [2021-11-12 23:24:30,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2021-11-12 23:24:30,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1162. [2021-11-12 23:24:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 719 states have (on average 1.8734353268428372) internal successors, (1347), 1156 states have internal predecessors, (1347), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:24:30,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1373 transitions. [2021-11-12 23:24:30,626 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1373 transitions. Word has length 14 [2021-11-12 23:24:30,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:30,626 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 1373 transitions. [2021-11-12 23:24:30,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:30,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1373 transitions. [2021-11-12 23:24:30,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 23:24:30,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:30,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:30,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-12 23:24:30,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:30,842 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:24:30,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:30,843 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-12 23:24:30,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:30,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045830607] [2021-11-12 23:24:30,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:30,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:30,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:30,844 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:30,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:24:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:31,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:24:31,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:31,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:31,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:31,085 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:31,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045830607] [2021-11-12 23:24:31,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045830607] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:31,085 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:31,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:24:31,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555583030] [2021-11-12 23:24:31,086 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:31,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:24:31,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:31,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:24:31,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:24:31,087 INFO L87 Difference]: Start difference. First operand 1162 states and 1373 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:31,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:31,138 INFO L93 Difference]: Finished difference Result 1102 states and 1287 transitions. [2021-11-12 23:24:31,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:24:31,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-12 23:24:31,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:31,145 INFO L225 Difference]: With dead ends: 1102 [2021-11-12 23:24:31,145 INFO L226 Difference]: Without dead ends: 1102 [2021-11-12 23:24:31,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:24:31,146 INFO L933 BasicCegarLoop]: 976 mSDtfsCounter, 1890 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.68ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.76ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:31,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1898 Valid, 1008 Invalid, 21 Unknown, 0 Unchecked, 2.68ms Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 34.76ms Time] [2021-11-12 23:24:31,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-11-12 23:24:31,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1102. [2021-11-12 23:24:31,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 683 states have (on average 1.8462664714494876) internal successors, (1261), 1096 states have internal predecessors, (1261), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:24:31,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1287 transitions. [2021-11-12 23:24:31,172 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1287 transitions. Word has length 18 [2021-11-12 23:24:31,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:31,172 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 1287 transitions. [2021-11-12 23:24:31,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:31,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1287 transitions. [2021-11-12 23:24:31,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 23:24:31,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:31,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:31,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-12 23:24:31,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:31,387 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:24:31,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:31,388 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-12 23:24:31,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:31,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601169463] [2021-11-12 23:24:31,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:31,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:31,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:31,389 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:31,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:24:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:31,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:24:31,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:31,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:31,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:31,620 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:31,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601169463] [2021-11-12 23:24:31,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601169463] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:31,620 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:31,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 23:24:31,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825481928] [2021-11-12 23:24:31,621 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:31,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:24:31,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:31,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:24:31,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:24:31,624 INFO L87 Difference]: Start difference. First operand 1102 states and 1287 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:31,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:31,712 INFO L93 Difference]: Finished difference Result 1074 states and 1231 transitions. [2021-11-12 23:24:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:24:31,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-12 23:24:31,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:31,719 INFO L225 Difference]: With dead ends: 1074 [2021-11-12 23:24:31,719 INFO L226 Difference]: Without dead ends: 1074 [2021-11-12 23:24:31,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:24:31,722 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 916 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.76ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.23ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:31,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 1919 Invalid, 67 Unknown, 0 Unchecked, 5.76ms Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 57.23ms Time] [2021-11-12 23:24:31,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2021-11-12 23:24:31,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1072. [2021-11-12 23:24:31,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 667 states have (on average 1.8035982008995501) internal successors, (1203), 1066 states have internal predecessors, (1203), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:24:31,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1229 transitions. [2021-11-12 23:24:31,751 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1229 transitions. Word has length 20 [2021-11-12 23:24:31,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:31,751 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1229 transitions. [2021-11-12 23:24:31,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:31,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1229 transitions. [2021-11-12 23:24:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-12 23:24:31,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:31,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:31,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:31,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:31,965 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:24:31,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:31,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-12 23:24:31,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:31,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976068696] [2021-11-12 23:24:31,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:31,966 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:31,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:31,966 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:31,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:24:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:32,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:24:32,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:32,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:24:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:32,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:32,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:32,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976068696] [2021-11-12 23:24:32,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976068696] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:32,355 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:32,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:24:32,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031517662] [2021-11-12 23:24:32,356 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:32,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:24:32,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:32,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:24:32,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:24:32,357 INFO L87 Difference]: Start difference. First operand 1072 states and 1229 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:34,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:34,321 INFO L93 Difference]: Finished difference Result 1525 states and 1766 transitions. [2021-11-12 23:24:34,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:24:34,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-12 23:24:34,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:34,329 INFO L225 Difference]: With dead ends: 1525 [2021-11-12 23:24:34,330 INFO L226 Difference]: Without dead ends: 1525 [2021-11-12 23:24:34,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:24:34,331 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 1467 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1627.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.61ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1920.64ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:34,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1467 Valid, 1062 Invalid, 910 Unknown, 0 Unchecked, 7.61ms Time], IncrementalHoareTripleChecker [29 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 1920.64ms Time] [2021-11-12 23:24:34,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2021-11-12 23:24:34,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1068. [2021-11-12 23:24:34,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 667 states have (on average 1.7916041979010495) internal successors, (1195), 1062 states have internal predecessors, (1195), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:24:34,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1221 transitions. [2021-11-12 23:24:34,359 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1221 transitions. Word has length 34 [2021-11-12 23:24:34,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:34,360 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1221 transitions. [2021-11-12 23:24:34,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:34,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1221 transitions. [2021-11-12 23:24:34,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-12 23:24:34,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:34,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:34,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:34,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:34,573 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:24:34,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:34,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-12 23:24:34,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:34,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13748722] [2021-11-12 23:24:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:34,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:34,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:34,575 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:34,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:24:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:34,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:24:34,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:34,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:24:35,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:35,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:35,549 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:35,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13748722] [2021-11-12 23:24:35,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13748722] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:35,549 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:35,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:24:35,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646277166] [2021-11-12 23:24:35,550 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:35,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:24:35,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:35,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:24:35,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:24:35,551 INFO L87 Difference]: Start difference. First operand 1068 states and 1221 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:41,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:41,722 INFO L93 Difference]: Finished difference Result 1579 states and 1783 transitions. [2021-11-12 23:24:41,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:24:41,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-12 23:24:41,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:41,730 INFO L225 Difference]: With dead ends: 1579 [2021-11-12 23:24:41,730 INFO L226 Difference]: Without dead ends: 1579 [2021-11-12 23:24:41,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:24:41,731 INFO L933 BasicCegarLoop]: 1168 mSDtfsCounter, 1944 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5358.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.88ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6026.33ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:41,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1944 Valid, 2136 Invalid, 1261 Unknown, 0 Unchecked, 12.88ms Time], IncrementalHoareTripleChecker [31 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 6026.33ms Time] [2021-11-12 23:24:41,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-11-12 23:24:41,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1064. [2021-11-12 23:24:41,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 667 states have (on average 1.7796101949025487) internal successors, (1187), 1058 states have internal predecessors, (1187), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:24:41,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1213 transitions. [2021-11-12 23:24:41,758 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1213 transitions. Word has length 34 [2021-11-12 23:24:41,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:41,758 INFO L470 AbstractCegarLoop]: Abstraction has 1064 states and 1213 transitions. [2021-11-12 23:24:41,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:41,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1213 transitions. [2021-11-12 23:24:41,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-12 23:24:41,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:41,761 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:41,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:41,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:41,972 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:24:41,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:41,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-12 23:24:41,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:41,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881805349] [2021-11-12 23:24:41,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:41,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:41,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:41,975 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:42,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:24:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:42,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:24:42,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:42,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:42,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:42,440 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:42,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881805349] [2021-11-12 23:24:42,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881805349] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:42,440 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:42,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:24:42,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306827936] [2021-11-12 23:24:42,440 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:42,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:24:42,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:42,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:24:42,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:24:42,441 INFO L87 Difference]: Start difference. First operand 1064 states and 1213 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:42,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:42,501 INFO L93 Difference]: Finished difference Result 1052 states and 1193 transitions. [2021-11-12 23:24:42,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:24:42,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-12 23:24:42,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:42,507 INFO L225 Difference]: With dead ends: 1052 [2021-11-12 23:24:42,508 INFO L226 Difference]: Without dead ends: 1052 [2021-11-12 23:24:42,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:24:42,509 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 892 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.54ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.28ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:42,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [900 Valid, 1865 Invalid, 43 Unknown, 0 Unchecked, 2.54ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 40.28ms Time] [2021-11-12 23:24:42,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-11-12 23:24:42,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2021-11-12 23:24:42,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 655 states have (on average 1.7816793893129772) internal successors, (1167), 1046 states have internal predecessors, (1167), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:24:42,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1193 transitions. [2021-11-12 23:24:42,530 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1193 transitions. Word has length 52 [2021-11-12 23:24:42,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:42,531 INFO L470 AbstractCegarLoop]: Abstraction has 1052 states and 1193 transitions. [2021-11-12 23:24:42,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:42,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1193 transitions. [2021-11-12 23:24:42,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-12 23:24:42,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:42,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:42,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:42,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:42,745 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:24:42,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:42,745 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-12 23:24:42,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:42,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260689899] [2021-11-12 23:24:42,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:42,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:42,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:42,747 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:42,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:24:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:43,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:24:43,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:43,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:24:43,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:24:43,764 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-12 23:24:43,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-12 23:24:43,772 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 23:24:43,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-12 23:24:43,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:43,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:48,714 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:48,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260689899] [2021-11-12 23:24:48,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260689899] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:48,715 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:48,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:24:48,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272303861] [2021-11-12 23:24:48,715 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:48,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:24:48,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:48,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:24:48,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-12 23:24:48,717 INFO L87 Difference]: Start difference. First operand 1052 states and 1193 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:53,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:53,516 INFO L93 Difference]: Finished difference Result 1473 states and 1666 transitions. [2021-11-12 23:24:53,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:24:53,517 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-12 23:24:53,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:53,523 INFO L225 Difference]: With dead ends: 1473 [2021-11-12 23:24:53,524 INFO L226 Difference]: Without dead ends: 1473 [2021-11-12 23:24:53,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-12 23:24:53,525 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 1062 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3998.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.36ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 904 IncrementalHoareTripleChecker+Unchecked, 4707.33ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:53,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1076 Valid, 1769 Invalid, 2172 Unknown, 0 Unchecked, 17.36ms Time], IncrementalHoareTripleChecker [55 Valid, 1213 Invalid, 0 Unknown, 904 Unchecked, 4707.33ms Time] [2021-11-12 23:24:53,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2021-11-12 23:24:53,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1030. [2021-11-12 23:24:53,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 665 states have (on average 1.7338345864661655) internal successors, (1153), 1024 states have internal predecessors, (1153), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:24:53,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1179 transitions. [2021-11-12 23:24:53,548 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1179 transitions. Word has length 60 [2021-11-12 23:24:53,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:53,549 INFO L470 AbstractCegarLoop]: Abstraction has 1030 states and 1179 transitions. [2021-11-12 23:24:53,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:53,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1179 transitions. [2021-11-12 23:24:53,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-12 23:24:53,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:53,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:53,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:53,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:53,768 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:24:53,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:53,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-12 23:24:53,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:53,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542269489] [2021-11-12 23:24:53,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:53,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:53,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:53,770 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:53,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:24:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:53,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:24:53,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:54,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:54,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:54,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-12 23:24:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:54,633 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:54,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542269489] [2021-11-12 23:24:54,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542269489] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:54,633 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:54,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:24:54,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294610178] [2021-11-12 23:24:54,633 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:54,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:24:54,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:54,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:24:54,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:24:54,635 INFO L87 Difference]: Start difference. First operand 1030 states and 1179 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:56,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:56,640 INFO L93 Difference]: Finished difference Result 1028 states and 1177 transitions. [2021-11-12 23:24:56,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:24:56,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-12 23:24:56,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:56,644 INFO L225 Difference]: With dead ends: 1028 [2021-11-12 23:24:56,645 INFO L226 Difference]: Without dead ends: 1028 [2021-11-12 23:24:56,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:24:56,645 INFO L933 BasicCegarLoop]: 596 mSDtfsCounter, 673 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1706.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.82ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1977.62ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:56,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 942 Invalid, 466 Unknown, 0 Unchecked, 4.82ms Time], IncrementalHoareTripleChecker [14 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 1977.62ms Time] [2021-11-12 23:24:56,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2021-11-12 23:24:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1028. [2021-11-12 23:24:56,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 665 states have (on average 1.7308270676691728) internal successors, (1151), 1022 states have internal predecessors, (1151), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:24:56,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1177 transitions. [2021-11-12 23:24:56,689 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1177 transitions. Word has length 62 [2021-11-12 23:24:56,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:56,691 INFO L470 AbstractCegarLoop]: Abstraction has 1028 states and 1177 transitions. [2021-11-12 23:24:56,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:56,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1177 transitions. [2021-11-12 23:24:56,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:24:56,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:56,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:56,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:56,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:56,912 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:24:56,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:56,913 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-12 23:24:56,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:56,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695685887] [2021-11-12 23:24:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:56,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:56,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:56,915 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:56,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:24:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:57,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:24:57,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:57,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:24:57,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 23:24:57,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-12 23:24:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:57,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:57,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:57,470 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:57,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695685887] [2021-11-12 23:24:57,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695685887] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:57,471 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:57,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:24:57,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094529013] [2021-11-12 23:24:57,471 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:57,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:24:57,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:57,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:24:57,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:24:57,472 INFO L87 Difference]: Start difference. First operand 1028 states and 1177 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:00,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:00,024 INFO L93 Difference]: Finished difference Result 1027 states and 1176 transitions. [2021-11-12 23:25:00,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:25:00,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-12 23:25:00,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:00,030 INFO L225 Difference]: With dead ends: 1027 [2021-11-12 23:25:00,030 INFO L226 Difference]: Without dead ends: 1027 [2021-11-12 23:25:00,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:25:00,031 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 4 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2125.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.87ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2494.84ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:00,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2314 Invalid, 1248 Unknown, 0 Unchecked, 6.87ms Time], IncrementalHoareTripleChecker [1 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 2494.84ms Time] [2021-11-12 23:25:00,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2021-11-12 23:25:00,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1027. [2021-11-12 23:25:00,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 665 states have (on average 1.7293233082706767) internal successors, (1150), 1021 states have internal predecessors, (1150), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:25:00,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1176 transitions. [2021-11-12 23:25:00,050 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1176 transitions. Word has length 65 [2021-11-12 23:25:00,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:00,051 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 1176 transitions. [2021-11-12 23:25:00,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:00,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1176 transitions. [2021-11-12 23:25:00,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:25:00,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:00,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:00,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-12 23:25:00,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:00,265 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:25:00,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:00,265 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-12 23:25:00,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:00,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426330219] [2021-11-12 23:25:00,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:00,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:00,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:00,267 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:00,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 23:25:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:00,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:25:00,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:00,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:25:00,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-12 23:25:00,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:25:00,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-12 23:25:00,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-12 23:25:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:00,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:01,114 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:01,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426330219] [2021-11-12 23:25:01,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426330219] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:01,114 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:01,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 23:25:01,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695816066] [2021-11-12 23:25:01,115 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:01,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:25:01,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:01,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:25:01,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:25:01,116 INFO L87 Difference]: Start difference. First operand 1027 states and 1176 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:08,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:08,135 INFO L93 Difference]: Finished difference Result 1026 states and 1175 transitions. [2021-11-12 23:25:08,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:25:08,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-12 23:25:08,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:08,140 INFO L225 Difference]: With dead ends: 1026 [2021-11-12 23:25:08,140 INFO L226 Difference]: Without dead ends: 1026 [2021-11-12 23:25:08,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:25:08,141 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 3 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6219.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.69ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6926.10ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:08,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2824 Invalid, 1627 Unknown, 0 Unchecked, 9.69ms Time], IncrementalHoareTripleChecker [2 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 6926.10ms Time] [2021-11-12 23:25:08,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2021-11-12 23:25:08,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1026. [2021-11-12 23:25:08,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 664 states have (on average 1.730421686746988) internal successors, (1149), 1020 states have internal predecessors, (1149), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:25:08,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1175 transitions. [2021-11-12 23:25:08,161 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1175 transitions. Word has length 65 [2021-11-12 23:25:08,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:08,161 INFO L470 AbstractCegarLoop]: Abstraction has 1026 states and 1175 transitions. [2021-11-12 23:25:08,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:25:08,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1175 transitions. [2021-11-12 23:25:08,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-12 23:25:08,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:08,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:08,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:08,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:08,375 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:25:08,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:08,376 INFO L85 PathProgramCache]: Analyzing trace with hash 864578415, now seen corresponding path program 1 times [2021-11-12 23:25:08,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:08,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803150354] [2021-11-12 23:25:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:08,377 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:08,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:08,378 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:08,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 23:25:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:08,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:25:08,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:08,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:08,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:08,987 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:08,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803150354] [2021-11-12 23:25:08,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803150354] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:25:08,988 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:25:08,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:25:08,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710875363] [2021-11-12 23:25:08,989 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:08,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:25:08,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:08,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:25:08,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:25:08,990 INFO L87 Difference]: Start difference. First operand 1026 states and 1175 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:25:09,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:09,101 INFO L93 Difference]: Finished difference Result 1036 states and 1188 transitions. [2021-11-12 23:25:09,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:25:09,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-12 23:25:09,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:09,109 INFO L225 Difference]: With dead ends: 1036 [2021-11-12 23:25:09,110 INFO L226 Difference]: Without dead ends: 1036 [2021-11-12 23:25:09,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:25:09,111 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 11 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.04ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.06ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:09,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1778 Invalid, 32 Unknown, 0 Unchecked, 2.04ms Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 75.06ms Time] [2021-11-12 23:25:09,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-11-12 23:25:09,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1036. [2021-11-12 23:25:09,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 672 states have (on average 1.7276785714285714) internal successors, (1161), 1029 states have internal predecessors, (1161), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-12 23:25:09,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1188 transitions. [2021-11-12 23:25:09,135 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1188 transitions. Word has length 73 [2021-11-12 23:25:09,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:09,135 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 1188 transitions. [2021-11-12 23:25:09,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:25:09,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1188 transitions. [2021-11-12 23:25:09,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-12 23:25:09,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:09,137 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:09,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:09,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:09,350 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:25:09,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:09,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1645234929, now seen corresponding path program 1 times [2021-11-12 23:25:09,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:09,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457515706] [2021-11-12 23:25:09,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:09,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:09,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:09,352 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:09,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 23:25:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:09,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:25:09,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:09,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:10,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:10,073 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:10,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457515706] [2021-11-12 23:25:10,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457515706] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:25:10,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1372706132] [2021-11-12 23:25:10,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:10,074 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:25:10,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:25:10,078 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:25:10,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-12 23:25:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:10,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:25:10,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:10,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:10,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1372706132] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:25:10,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850820858] [2021-11-12 23:25:10,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:10,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:25:10,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:25:10,764 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:25:10,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-12 23:25:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:10,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:25:10,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:11,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:11,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:11,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:11,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850820858] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:25:11,415 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:25:11,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-12 23:25:11,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582779352] [2021-11-12 23:25:11,419 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:25:11,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:25:11,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:11,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:25:11,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:25:11,421 INFO L87 Difference]: Start difference. First operand 1036 states and 1188 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 23:25:12,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:12,014 INFO L93 Difference]: Finished difference Result 1050 states and 1205 transitions. [2021-11-12 23:25:12,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:25:12,015 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-12 23:25:12,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:12,021 INFO L225 Difference]: With dead ends: 1050 [2021-11-12 23:25:12,022 INFO L226 Difference]: Without dead ends: 1044 [2021-11-12 23:25:12,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:25:12,023 INFO L933 BasicCegarLoop]: 890 mSDtfsCounter, 51 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 219.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3556 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.16ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 261.87ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:12,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 3556 Invalid, 141 Unknown, 0 Unchecked, 3.16ms Time], IncrementalHoareTripleChecker [33 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 261.87ms Time] [2021-11-12 23:25:12,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2021-11-12 23:25:12,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1042. [2021-11-12 23:25:12,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 678 states have (on average 1.7227138643067847) internal successors, (1168), 1035 states have internal predecessors, (1168), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-12 23:25:12,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1195 transitions. [2021-11-12 23:25:12,044 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1195 transitions. Word has length 75 [2021-11-12 23:25:12,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:12,044 INFO L470 AbstractCegarLoop]: Abstraction has 1042 states and 1195 transitions. [2021-11-12 23:25:12,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 23:25:12,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1195 transitions. [2021-11-12 23:25:12,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-12 23:25:12,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:12,046 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:12,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:12,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:12,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:12,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:25:12,659 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:25:12,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:12,659 INFO L85 PathProgramCache]: Analyzing trace with hash -132870065, now seen corresponding path program 2 times [2021-11-12 23:25:12,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:12,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099826795] [2021-11-12 23:25:12,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:25:12,660 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:12,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:12,661 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:12,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 23:25:13,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:25:13,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:25:13,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:25:13,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:13,311 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:13,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:13,742 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:13,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099826795] [2021-11-12 23:25:13,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099826795] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:25:13,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [396627241] [2021-11-12 23:25:13,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:25:13,742 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:25:13,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:25:13,751 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:25:13,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-12 23:25:14,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:25:14,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:25:14,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:25:14,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:14,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:25:14,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [396627241] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:25:14,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706132236] [2021-11-12 23:25:14,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:25:14,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:25:14,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:25:14,997 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:25:15,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-12 23:25:43,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:25:43,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:25:43,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-12 23:25:43,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:43,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:25:43,671 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-12 23:25:43,671 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 16 treesize of output 16 [2021-11-12 23:25:43,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:25:43,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-12 23:25:44,016 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 31 treesize of output 19 [2021-11-12 23:25:44,020 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 19 treesize of output 13 [2021-11-12 23:28:00,973 WARN L227 SmtUtils]: Spent 30.18s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:28:00,973 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-12 23:28:00,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 143 treesize of output 135 [2021-11-12 23:28:29,825 WARN L227 SmtUtils]: Spent 28.84s on a formula simplification. DAG size of input: 118 DAG size of output: 38 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:28:29,826 INFO L354 Elim1Store]: treesize reduction 1178, result has 7.5 percent of original size [2021-11-12 23:28:29,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 183 treesize of output 226 [2021-11-12 23:28:39,220 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-12 23:28:39,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 241 treesize of output 118 [2021-11-12 23:28:39,241 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-12 23:28:39,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 46 [2021-11-12 23:28:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 15 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:28:51,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:29:02,119 WARN L227 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-12 23:29:22,103 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_103| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_104|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_103|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_105|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#t~loopctr239_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr239_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr239_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (let ((.cse9 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (let ((.cse10 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9))) (let ((.cse8 (bvadd .cse10 (_ bv20 32)))) (and (bvule .cse8 (select |c_#length| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9))) (bvule (bvadd (_ bv16 32) .cse10) .cse8))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_103| (_ BitVec 32))) (not (let ((.cse11 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse12 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_104|) .cse12) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_103|) .cse12) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_105|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr239_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr239_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr239_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse11) (bvadd .cse11 (_ bv20 32)))))))) is different from false [2021-11-12 23:32:51,544 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_103| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_104|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_103|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_105|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#t~loopctr239_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr239_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr239_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (and (forall ((v_subst_6 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr239| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32))) (let ((.cse8 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr239|)) (.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse11 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse13 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse8 .cse9) .cse10 .cse9) .cse11 .cse9) .cse12 .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse13) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse8 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse13))))) (forall ((|#Ultimate.C_memset_#t~loopctr239| (_ BitVec 32)) (v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32))) (let ((.cse14 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse15 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr239|) .cse15) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse15) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse15) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse15))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse14) (bvadd .cse14 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_103| (_ BitVec 32))) (not (let ((.cse16 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_104|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_103|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_105|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr239_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr239_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr239_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse16) (bvadd .cse16 (_ bv20 32)))))))) is different from false [2021-11-12 23:32:53,552 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_103| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_104|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_103|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_105|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#t~loopctr239_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr239_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr239_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (and (forall ((v_subst_6 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr239| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32))) (let ((.cse8 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr239|)) (.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse11 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse13 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse8 .cse9) .cse10 .cse9) .cse11 .cse9) .cse12 .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse13) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse8 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse13))))) (forall ((|#Ultimate.C_memset_#t~loopctr239| (_ BitVec 32)) (v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32))) (let ((.cse14 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse15 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr239|) .cse15) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse15) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse15) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse15))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse14) (bvadd .cse14 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_103| (_ BitVec 32))) (not (let ((.cse16 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_104|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_103|) .cse17) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_105|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr239_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr239_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr239_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse16) (bvadd .cse16 (_ bv20 32)))))))) is different from true [2021-11-12 23:32:59,713 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_103| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_104|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_103|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_105|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#t~loopctr239_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr239_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr239_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_103| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_104|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_103|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_105|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr239_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr239_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr239_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32)))))) (and (forall ((v_subst_6 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr239| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr239|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse16 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11) .cse15 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16))))) (forall ((|#Ultimate.C_memset_#t~loopctr239| (_ BitVec 32)) (v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse17 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse18 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr239|) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse18) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse18))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd .cse17 (_ bv16 32)) (bvadd .cse17 (_ bv20 32)))))))) is different from false [2021-11-12 23:33:07,616 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_103| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_104|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_103|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_105|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#t~loopctr239_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr239_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr239_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_103| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_104|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_103|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_105|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr239_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr239_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr239_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32)))))) (and (forall ((|#Ultimate.C_memset_#t~loopctr239| (_ BitVec 32)) (v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr239|) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse10) (bvadd .cse10 (_ bv20 32))))) (forall ((v_subst_6 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr239| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse12 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr239|)) (.cse14 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10)) (.cse15 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse16 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse17 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse18 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse19 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13) .cse16 .cse13) .cse17 .cse13) .cse18 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32)) .cse18 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19)))))))) is different from false [2021-11-12 23:33:09,625 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_103| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_104|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_103|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_105|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#t~loopctr239_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr239_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr239_107| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_108| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr239_103| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_104|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_103|) .cse9) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr239_105|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr239_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr239_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr239_107| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32)))))) (and (forall ((|#Ultimate.C_memset_#t~loopctr239| (_ BitVec 32)) (v_subst_5 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr239|) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4) .cse11) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse10) (bvadd .cse10 (_ bv20 32))))) (forall ((v_subst_6 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr239| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse12 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr239|)) (.cse14 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10)) (.cse15 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse16 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse17 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3)) (.cse18 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse19 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13) .cse16 .cse13) .cse17 .cse13) .cse18 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32)) .cse18 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19)))))))) is different from true [2021-11-12 23:33:48,365 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-12 23:33:48,366 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-12 23:33:48,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-12 23:33:48,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841844949] [2021-11-12 23:33:48,366 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-12 23:33:48,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-12 23:33:48,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:33:48,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-12 23:33:48,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1118, Unknown=137, NotChecked=300, Total=1722 [2021-11-12 23:33:48,369 INFO L87 Difference]: Start difference. First operand 1042 states and 1195 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:34:43,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:34:43,889 INFO L93 Difference]: Finished difference Result 1068 states and 1231 transitions. [2021-11-12 23:34:43,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-12 23:34:43,890 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2021-11-12 23:34:43,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:34:43,895 INFO L225 Difference]: With dead ends: 1068 [2021-11-12 23:34:43,896 INFO L226 Difference]: Without dead ends: 1064 [2021-11-12 23:34:43,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 426.1s TimeCoverageRelationStatistics Valid=508, Invalid=2546, Unknown=154, NotChecked=452, Total=3660 [2021-11-12 23:34:43,898 INFO L933 BasicCegarLoop]: 894 mSDtfsCounter, 62 mSDsluCounter, 9769 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 648.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 10663 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.57ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 726.63ms IncrementalHoareTripleChecker+Time [2021-11-12 23:34:43,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 10663 Invalid, 381 Unknown, 0 Unchecked, 10.57ms Time], IncrementalHoareTripleChecker [58 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 726.63ms Time] [2021-11-12 23:34:43,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2021-11-12 23:34:43,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1054. [2021-11-12 23:34:43,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 690 states have (on average 1.7159420289855072) internal successors, (1184), 1047 states have internal predecessors, (1184), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-12 23:34:43,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1211 transitions. [2021-11-12 23:34:43,919 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1211 transitions. Word has length 79 [2021-11-12 23:34:43,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:34:43,920 INFO L470 AbstractCegarLoop]: Abstraction has 1054 states and 1211 transitions. [2021-11-12 23:34:43,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:34:43,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1211 transitions. [2021-11-12 23:34:43,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-12 23:34:43,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:34:43,921 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:34:43,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-12 23:34:44,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-12 23:34:44,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-12 23:34:44,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:34:44,526 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:34:44,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:34:44,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1141860047, now seen corresponding path program 3 times [2021-11-12 23:34:44,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:34:44,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226973746] [2021-11-12 23:34:44,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:34:44,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:34:44,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:34:44,528 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:34:44,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-12 23:34:45,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 23:34:45,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:34:45,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 23:34:45,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:34:45,823 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:45,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:34:47,642 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:47,642 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:34:47,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226973746] [2021-11-12 23:34:47,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226973746] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:34:47,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1999731169] [2021-11-12 23:34:47,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:34:47,643 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:34:47,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:34:47,644 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:34:47,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-12 23:34:49,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 23:34:49,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:34:49,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 23:34:49,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:34:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:50,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:34:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:50,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1999731169] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:34:50,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053392895] [2021-11-12 23:34:50,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:34:50,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:34:50,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:34:50,620 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:34:50,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4779a9d2-7c23-4ae6-8dd8-58b8c551f667/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process