./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/hostid.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/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_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/hostid.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/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 64bit --witnessprinter.graph.data.programhash de0fc62ae58e6d221c3194714bc6cea21909b72dd1b37b4566b87d84683f34c8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:20:58,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:20:58,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:20:58,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:20:58,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:20:58,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:20:58,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:20:58,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:20:58,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:20:58,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:20:58,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:20:58,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:20:58,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:20:58,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:20:58,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:20:58,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:20:58,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:20:58,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:20:58,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:20:58,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:20:58,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:20:58,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:20:58,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:20:58,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:20:58,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:20:58,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:20:58,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:20:58,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:20:58,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:20:58,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:20:58,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:20:58,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:20:58,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:20:58,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:20:58,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:20:58,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:20:58,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:20:58,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:20:58,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:20:58,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:20:58,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:20:58,413 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2021-11-12 22:20:58,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:20:58,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:20:58,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:20:58,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:20:58,462 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:20:58,462 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:20:58,463 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:20:58,463 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:20:58,463 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:20:58,463 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:20:58,464 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:20:58,465 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:20:58,465 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:20:58,465 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:20:58,465 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:20:58,465 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:20:58,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 22:20:58,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 22:20:58,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:20:58,467 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:20:58,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:20:58,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:20:58,468 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 22:20:58,468 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 22:20:58,468 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 22:20:58,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:20:58,474 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:20:58,475 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:20:58,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:20:58,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:20:58,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:20:58,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:20:58,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:20:58,476 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:20:58,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:20:58,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:20:58,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:20:58,477 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_72ed7ab2-594b-4652-97cc-91505bea4935/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de0fc62ae58e6d221c3194714bc6cea21909b72dd1b37b4566b87d84683f34c8 [2021-11-12 22:20:58,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:20:58,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:20:58,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:20:58,763 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:20:58,764 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:20:58,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/busybox-1.22.0/hostid.i [2021-11-12 22:20:58,858 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/data/942c3e188/4e868c1980064524948f0485f903c414/FLAGabb25a712 [2021-11-12 22:20:59,545 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:20:59,546 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/sv-benchmarks/c/busybox-1.22.0/hostid.i [2021-11-12 22:20:59,576 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/data/942c3e188/4e868c1980064524948f0485f903c414/FLAGabb25a712 [2021-11-12 22:20:59,690 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/data/942c3e188/4e868c1980064524948f0485f903c414 [2021-11-12 22:20:59,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:20:59,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:20:59,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:20:59,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:20:59,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:20:59,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:20:59" (1/1) ... [2021-11-12 22:20:59,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4378adab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:59, skipping insertion in model container [2021-11-12 22:20:59,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:20:59" (1/1) ... [2021-11-12 22:20:59,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:20:59,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:21:00,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:21:00,716 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:21:00,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@799331b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:00, skipping insertion in model container [2021-11-12 22:21:00,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:21:00,717 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:21:00,719 INFO L158 Benchmark]: Toolchain (without parser) took 1024.27ms. Allocated memory is still 109.1MB. Free memory was 71.4MB in the beginning and 74.2MB in the end (delta: -2.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:21:00,720 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 81.8MB. Free memory was 52.3MB in the beginning and 52.3MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:21:00,721 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1020.26ms. Allocated memory is still 109.1MB. Free memory was 71.4MB in the beginning and 74.8MB in the end (delta: -3.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:21:00,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 81.8MB. Free memory was 52.3MB in the beginning and 52.3MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1020.26ms. Allocated memory is still 109.1MB. Free memory was 71.4MB in the beginning and 74.8MB in the end (delta: -3.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1774]: 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_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/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_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/hostid.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/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 64bit --witnessprinter.graph.data.programhash de0fc62ae58e6d221c3194714bc6cea21909b72dd1b37b4566b87d84683f34c8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:21:02,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:21:02,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:21:02,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:21:02,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:21:02,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:21:02,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:21:02,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:21:02,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:21:02,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:21:02,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:21:02,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:21:02,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:21:02,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:21:02,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:21:02,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:21:02,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:21:02,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:21:02,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:21:02,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:21:02,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:21:02,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:21:02,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:21:02,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:21:02,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:21:02,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:21:02,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:21:02,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:21:02,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:21:02,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:21:02,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:21:02,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:21:02,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:21:02,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:21:02,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:21:02,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:21:02,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:21:02,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:21:02,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:21:02,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:21:02,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:21:02,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2021-11-12 22:21:02,908 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:21:02,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:21:02,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:21:02,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:21:02,909 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:21:02,910 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:21:02,910 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:21:02,910 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:21:02,910 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:21:02,910 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:21:02,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 22:21:02,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 22:21:02,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:21:02,912 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:21:02,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:21:02,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:21:02,912 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 22:21:02,913 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 22:21:02,913 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 22:21:02,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:21:02,913 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:21:02,913 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:21:02,914 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:21:02,914 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:21:02,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:21:02,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:21:02,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:21:02,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:21:02,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:21:02,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:21:02,915 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:21:02,915 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:21:02,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:21:02,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:21:02,916 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_72ed7ab2-594b-4652-97cc-91505bea4935/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de0fc62ae58e6d221c3194714bc6cea21909b72dd1b37b4566b87d84683f34c8 [2021-11-12 22:21:03,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:21:03,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:21:03,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:21:03,303 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:21:03,304 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:21:03,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/busybox-1.22.0/hostid.i [2021-11-12 22:21:03,380 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/data/fb20761c1/93d623ecdf2d4cd4a083e4001d2a2d29/FLAGc3d3b9175 [2021-11-12 22:21:04,047 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:21:04,048 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/sv-benchmarks/c/busybox-1.22.0/hostid.i [2021-11-12 22:21:04,079 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/data/fb20761c1/93d623ecdf2d4cd4a083e4001d2a2d29/FLAGc3d3b9175 [2021-11-12 22:21:04,239 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/data/fb20761c1/93d623ecdf2d4cd4a083e4001d2a2d29 [2021-11-12 22:21:04,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:21:04,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:21:04,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:21:04,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:21:04,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:21:04,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:21:04" (1/1) ... [2021-11-12 22:21:04,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d4e2da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:04, skipping insertion in model container [2021-11-12 22:21:04,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:21:04" (1/1) ... [2021-11-12 22:21:04,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:21:04,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:21:05,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:21:05,365 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:21:05,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:21:05,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:21:05,517 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:21:05,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:21:05,833 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:21:05,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:05 WrapperNode [2021-11-12 22:21:05,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:21:05,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:21:05,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:21:05,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:21:05,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:05" (1/1) ... [2021-11-12 22:21:05,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:05" (1/1) ... [2021-11-12 22:21:05,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:21:05,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:21:05,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:21:05,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:21:05,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:05" (1/1) ... [2021-11-12 22:21:05,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:05" (1/1) ... [2021-11-12 22:21:05,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:05" (1/1) ... [2021-11-12 22:21:05,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:05" (1/1) ... [2021-11-12 22:21:06,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:05" (1/1) ... [2021-11-12 22:21:06,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:05" (1/1) ... [2021-11-12 22:21:06,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:05" (1/1) ... [2021-11-12 22:21:06,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:21:06,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:21:06,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:21:06,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:21:06,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:05" (1/1) ... [2021-11-12 22:21:06,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:21:06,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:21:06,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:21:06,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:21:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:21:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:21:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:21:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2021-11-12 22:21:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:21:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:21:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:21:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:21:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:21:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:21:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:21:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:21:07,282 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:21:07,282 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-12 22:21:07,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:21:07 BoogieIcfgContainer [2021-11-12 22:21:07,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:21:07,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:21:07,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:21:07,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:21:07,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:21:04" (1/3) ... [2021-11-12 22:21:07,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ee3f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:21:07, skipping insertion in model container [2021-11-12 22:21:07,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:05" (2/3) ... [2021-11-12 22:21:07,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ee3f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:21:07, skipping insertion in model container [2021-11-12 22:21:07,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:21:07" (3/3) ... [2021-11-12 22:21:07,291 INFO L111 eAbstractionObserver]: Analyzing ICFG hostid.i [2021-11-12 22:21:07,296 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:21:07,297 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2021-11-12 22:21:07,339 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:21:07,346 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:21:07,346 INFO L340 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2021-11-12 22:21:07,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 55 states have (on average 1.8545454545454545) internal successors, (102), 92 states have internal predecessors, (102), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:07,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:21:07,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:07,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:21:07,392 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:21:07,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:07,397 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-12 22:21:07,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:07,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563250898] [2021-11-12 22:21:07,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:07,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:07,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:07,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:07,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:21:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:07,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:21:07,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:07,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:21:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:07,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:07,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:07,763 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:07,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563250898] [2021-11-12 22:21:07,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563250898] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:07,765 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:07,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:21:07,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467727304] [2021-11-12 22:21:07,769 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:07,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:21:07,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:07,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:21:07,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:21:07,823 INFO L87 Difference]: Start difference. First operand has 95 states, 55 states have (on average 1.8545454545454545) internal successors, (102), 92 states have internal predecessors, (102), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:08,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:08,161 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2021-11-12 22:21:08,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:21:08,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-12 22:21:08,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:08,173 INFO L225 Difference]: With dead ends: 109 [2021-11-12 22:21:08,173 INFO L226 Difference]: Without dead ends: 107 [2021-11-12 22:21:08,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:21:08,189 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 70 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 270.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.22ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 303.78ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:08,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 88 Invalid, 50 Unknown, 0 Unchecked, 4.22ms Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 303.78ms Time] [2021-11-12 22:21:08,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-12 22:21:08,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 91. [2021-11-12 22:21:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 88 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2021-11-12 22:21:08,232 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 3 [2021-11-12 22:21:08,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:08,233 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2021-11-12 22:21:08,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:08,233 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2021-11-12 22:21:08,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:21:08,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:08,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:21:08,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:08,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:21:08,447 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:21:08,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:08,449 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-12 22:21:08,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:08,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261291533] [2021-11-12 22:21:08,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:08,459 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:08,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:08,460 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:08,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:21:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:08,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:21:08,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:08,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:21:08,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:08,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:08,828 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:08,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261291533] [2021-11-12 22:21:08,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261291533] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:08,829 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:08,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 22:21:08,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375250763] [2021-11-12 22:21:08,830 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:08,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:21:08,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:08,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:21:08,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:21:08,833 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:09,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:09,414 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2021-11-12 22:21:09,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:21:09,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-12 22:21:09,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:09,419 INFO L225 Difference]: With dead ends: 90 [2021-11-12 22:21:09,419 INFO L226 Difference]: Without dead ends: 90 [2021-11-12 22:21:09,420 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 22:21:09,421 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 18 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 500.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 567.94ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:09,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 142 Invalid, 36 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 567.94ms Time] [2021-11-12 22:21:09,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-12 22:21:09,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-11-12 22:21:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 54 states have (on average 1.7037037037037037) internal successors, (92), 87 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:09,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2021-11-12 22:21:09,431 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 3 [2021-11-12 22:21:09,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:09,431 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2021-11-12 22:21:09,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:09,432 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2021-11-12 22:21:09,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 22:21:09,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:09,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 22:21:09,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:09,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:21:09,643 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:21:09,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:09,644 INFO L85 PathProgramCache]: Analyzing trace with hash 889446313, now seen corresponding path program 1 times [2021-11-12 22:21:09,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:09,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053932205] [2021-11-12 22:21:09,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:09,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:09,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:09,647 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:09,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:21:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:09,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:21:09,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:09,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:21:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:09,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:10,444 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:10,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053932205] [2021-11-12 22:21:10,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053932205] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:10,445 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:10,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 22:21:10,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414902971] [2021-11-12 22:21:10,446 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:10,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:21:10,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:10,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:21:10,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:21:10,447 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:11,863 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2021-11-12 22:21:11,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:21:11,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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 6 [2021-11-12 22:21:11,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:11,867 INFO L225 Difference]: With dead ends: 99 [2021-11-12 22:21:11,867 INFO L226 Difference]: Without dead ends: 99 [2021-11-12 22:21:11,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:21:11,869 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 32 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1228.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.31ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1324.77ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:11,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 194 Invalid, 97 Unknown, 0 Unchecked, 3.31ms Time], IncrementalHoareTripleChecker [11 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 1324.77ms Time] [2021-11-12 22:21:11,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-12 22:21:11,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2021-11-12 22:21:11,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 60 states have (on average 1.65) internal successors, (99), 93 states have internal predecessors, (99), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2021-11-12 22:21:11,901 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 6 [2021-11-12 22:21:11,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:11,903 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2021-11-12 22:21:11,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:11,903 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2021-11-12 22:21:11,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 22:21:11,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:11,906 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-12 22:21:11,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:12,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:21:12,113 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:21:12,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:12,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1609221679, now seen corresponding path program 1 times [2021-11-12 22:21:12,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:12,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863659216] [2021-11-12 22:21:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:12,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:12,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:12,117 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:12,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:21:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:12,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:21:12,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:12,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:21:12,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:12,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:15,134 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:15,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863659216] [2021-11-12 22:21:15,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863659216] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:21:15,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [434577980] [2021-11-12 22:21:15,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:15,135 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:21:15,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:21:15,142 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:21:15,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-12 22:21:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:15,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:21:15,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:15,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:21:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:15,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:16,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [434577980] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:21:16,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150485363] [2021-11-12 22:21:16,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:16,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:21:16,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:21:16,507 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:21:16,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-12 22:21:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:16,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:21:16,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:16,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:21:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:16,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:17,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:17,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150485363] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:21:17,549 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:21:17,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-11-12 22:21:17,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20364395] [2021-11-12 22:21:17,550 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:21:17,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:21:17,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:17,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:21:17,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:21:17,552 INFO L87 Difference]: Start difference. First operand 96 states and 101 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:20,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:20,140 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2021-11-12 22:21:20,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:21:20,141 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-12 22:21:20,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:20,142 INFO L225 Difference]: With dead ends: 106 [2021-11-12 22:21:20,142 INFO L226 Difference]: Without dead ends: 106 [2021-11-12 22:21:20,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:21:20,144 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 50 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1999.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.95ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2164.35ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:20,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 360 Invalid, 234 Unknown, 0 Unchecked, 3.95ms Time], IncrementalHoareTripleChecker [23 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 2164.35ms Time] [2021-11-12 22:21:20,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-12 22:21:20,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-11-12 22:21:20,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.5211267605633803) internal successors, (108), 103 states have internal predecessors, (108), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:20,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2021-11-12 22:21:20,157 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 14 [2021-11-12 22:21:20,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:20,158 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2021-11-12 22:21:20,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:20,158 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2021-11-12 22:21:20,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:21:20,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:20,160 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:20,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:20,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:20,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-12 22:21:20,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:21:20,767 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:21:20,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:20,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1549039584, now seen corresponding path program 1 times [2021-11-12 22:21:20,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:20,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675911438] [2021-11-12 22:21:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:20,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:20,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:20,771 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:20,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:21:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:20,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:21:20,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:21,097 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:21,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:21,319 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:21,319 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:21,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675911438] [2021-11-12 22:21:21,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675911438] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:21:21,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [699389871] [2021-11-12 22:21:21,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:21,319 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:21:21,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:21:21,323 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:21:21,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-12 22:21:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:21,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:21:21,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:21,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:21,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [699389871] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:21:21,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553943050] [2021-11-12 22:21:21,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:21,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:21:21,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:21:21,874 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:21:21,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-12 22:21:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:22,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:21:22,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:22,116 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-12 22:21:22,116 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-12 22:21:22,245 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 22:21:22,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 22:21:22,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553943050] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:22,301 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-12 22:21:22,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [8, 8, 8, 8] total 15 [2021-11-12 22:21:22,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446293126] [2021-11-12 22:21:22,302 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:22,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:21:22,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:22,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:21:22,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:21:22,303 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:22,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:22,627 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2021-11-12 22:21:22,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:21:22,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-11-12 22:21:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:22,629 INFO L225 Difference]: With dead ends: 117 [2021-11-12 22:21:22,629 INFO L226 Difference]: Without dead ends: 117 [2021-11-12 22:21:22,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:21:22,631 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 55 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 286.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.51ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 317.70ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:22,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 91 Invalid, 48 Unknown, 0 Unchecked, 1.51ms Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 317.70ms Time] [2021-11-12 22:21:22,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-12 22:21:22,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 101. [2021-11-12 22:21:22,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 98 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:22,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2021-11-12 22:21:22,640 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 33 [2021-11-12 22:21:22,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:22,640 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2021-11-12 22:21:22,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:22,641 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2021-11-12 22:21:22,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:21:22,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:22,642 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:22,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-11-12 22:21:22,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:23,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-12 22:21:23,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:21:23,246 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:21:23,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:23,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1549039583, now seen corresponding path program 1 times [2021-11-12 22:21:23,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:23,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504597549] [2021-11-12 22:21:23,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:23,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:23,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:23,248 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:23,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:21:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:23,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:21:23,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:23,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:23,781 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:23,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504597549] [2021-11-12 22:21:23,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504597549] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:21:23,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [761222146] [2021-11-12 22:21:23,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:23,782 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:21:23,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:21:23,787 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:21:23,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-12 22:21:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:24,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:21:24,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:24,250 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:24,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:24,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [761222146] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:21:24,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332720809] [2021-11-12 22:21:24,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:24,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:21:24,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:21:24,369 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:21:24,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-12 22:21:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:24,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:21:24,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:24,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:25,101 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:25,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332720809] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:21:25,102 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:21:25,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 9] total 19 [2021-11-12 22:21:25,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029025426] [2021-11-12 22:21:25,102 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:21:25,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-12 22:21:25,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:25,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-12 22:21:25,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:21:25,104 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 19 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 19 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:21:25,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:25,933 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2021-11-12 22:21:25,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:21:25,933 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 19 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2021-11-12 22:21:25,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:25,935 INFO L225 Difference]: With dead ends: 129 [2021-11-12 22:21:25,935 INFO L226 Difference]: Without dead ends: 129 [2021-11-12 22:21:25,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:21:25,936 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 433 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 386.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.13ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 439.34ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:25,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 625 Invalid, 182 Unknown, 0 Unchecked, 4.13ms Time], IncrementalHoareTripleChecker [26 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 439.34ms Time] [2021-11-12 22:21:25,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-12 22:21:25,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-12 22:21:25,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 99 states have (on average 1.3333333333333333) internal successors, (132), 126 states have internal predecessors, (132), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:25,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 134 transitions. [2021-11-12 22:21:25,946 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 134 transitions. Word has length 33 [2021-11-12 22:21:25,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:25,946 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 134 transitions. [2021-11-12 22:21:25,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 19 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:21:25,947 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 134 transitions. [2021-11-12 22:21:25,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-12 22:21:25,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:25,948 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:25,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:26,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-12 22:21:26,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:26,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:21:26,553 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:21:26,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:26,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2087093682, now seen corresponding path program 2 times [2021-11-12 22:21:26,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:26,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814281322] [2021-11-12 22:21:26,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:21:26,554 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:26,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:26,555 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:26,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 22:21:26,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 22:21:26,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:21:26,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:21:26,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:26,907 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-12 22:21:26,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-11-12 22:21:26,915 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 30 treesize of output 28 [2021-11-12 22:21:27,071 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:21:27,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:21:27,680 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:27,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814281322] [2021-11-12 22:21:27,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814281322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:27,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:27,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 22:21:27,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117660226] [2021-11-12 22:21:27,680 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:27,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 22:21:27,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:27,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 22:21:27,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:21:27,681 INFO L87 Difference]: Start difference. First operand 129 states and 134 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:21:28,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:28,648 INFO L93 Difference]: Finished difference Result 128 states and 133 transitions. [2021-11-12 22:21:28,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:21:28,649 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2021-11-12 22:21:28,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:28,651 INFO L225 Difference]: With dead ends: 128 [2021-11-12 22:21:28,651 INFO L226 Difference]: Without dead ends: 128 [2021-11-12 22:21:28,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:21:28,652 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 5 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 887.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.56ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 939.05ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:28,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 413 Invalid, 96 Unknown, 0 Unchecked, 1.56ms Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 37 Unchecked, 939.05ms Time] [2021-11-12 22:21:28,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-12 22:21:28,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-12 22:21:28,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 99 states have (on average 1.3232323232323233) internal successors, (131), 125 states have internal predecessors, (131), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:28,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2021-11-12 22:21:28,672 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 53 [2021-11-12 22:21:28,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:28,673 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2021-11-12 22:21:28,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:21:28,673 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2021-11-12 22:21:28,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-12 22:21:28,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:28,675 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:28,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:28,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:21:28,877 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:21:28,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:28,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1633693263, now seen corresponding path program 1 times [2021-11-12 22:21:28,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:28,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584852567] [2021-11-12 22:21:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:28,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:28,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:28,879 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:28,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 22:21:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:29,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:21:29,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:29,379 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-12 22:21:29,380 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 1 case distinctions, treesize of input 26 treesize of output 27 [2021-11-12 22:21:29,851 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-12 22:21:29,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 59 [2021-11-12 22:21:29,862 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:21:29,862 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 53 treesize of output 49 [2021-11-12 22:21:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:21:30,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:31,772 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-12 22:21:31,773 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 49 treesize of output 48 [2021-11-12 22:21:35,154 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:21:35,154 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:35,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584852567] [2021-11-12 22:21:35,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584852567] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:35,154 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:35,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-12 22:21:35,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608318358] [2021-11-12 22:21:35,154 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:35,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-12 22:21:35,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:35,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-12 22:21:35,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=163, Unknown=1, NotChecked=0, Total=210 [2021-11-12 22:21:35,156 INFO L87 Difference]: Start difference. First operand 128 states and 133 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:21:35,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:35,452 INFO L93 Difference]: Finished difference Result 130 states and 136 transitions. [2021-11-12 22:21:35,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:21:35,454 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2021-11-12 22:21:35,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:35,455 INFO L225 Difference]: With dead ends: 130 [2021-11-12 22:21:35,455 INFO L226 Difference]: Without dead ends: 130 [2021-11-12 22:21:35,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=58, Invalid=213, Unknown=1, NotChecked=0, Total=272 [2021-11-12 22:21:35,456 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 7 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 89.67ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:35,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 537 Invalid, 172 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 155 Unchecked, 89.67ms Time] [2021-11-12 22:21:35,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-12 22:21:35,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-12 22:21:35,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 101 states have (on average 1.3267326732673268) internal successors, (134), 127 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 136 transitions. [2021-11-12 22:21:35,464 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 136 transitions. Word has length 56 [2021-11-12 22:21:35,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:35,464 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 136 transitions. [2021-11-12 22:21:35,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:21:35,465 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 136 transitions. [2021-11-12 22:21:35,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-12 22:21:35,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:35,466 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:35,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-12 22:21:35,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:21:35,683 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:21:35,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:35,684 INFO L85 PathProgramCache]: Analyzing trace with hash 895115800, now seen corresponding path program 1 times [2021-11-12 22:21:35,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:35,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33704815] [2021-11-12 22:21:35,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:35,684 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:35,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:35,685 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:35,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 22:21:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:35,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:21:35,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:36,064 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:21:36,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:21:36,169 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:36,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33704815] [2021-11-12 22:21:36,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33704815] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:36,169 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:36,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:21:36,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900618547] [2021-11-12 22:21:36,169 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:36,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:21:36,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:36,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:21:36,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:21:36,171 INFO L87 Difference]: Start difference. First operand 130 states and 136 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:36,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:36,693 INFO L93 Difference]: Finished difference Result 145 states and 152 transitions. [2021-11-12 22:21:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:21:36,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-11-12 22:21:36,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:36,696 INFO L225 Difference]: With dead ends: 145 [2021-11-12 22:21:36,696 INFO L226 Difference]: Without dead ends: 145 [2021-11-12 22:21:36,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:21:36,697 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 74 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 450.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.68ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 499.98ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:36,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 134 Invalid, 76 Unknown, 0 Unchecked, 1.68ms Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 499.98ms Time] [2021-11-12 22:21:36,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-12 22:21:36,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 129. [2021-11-12 22:21:36,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 101 states have (on average 1.316831683168317) internal successors, (133), 126 states have internal predecessors, (133), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:36,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2021-11-12 22:21:36,704 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 57 [2021-11-12 22:21:36,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:36,704 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2021-11-12 22:21:36,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:36,705 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2021-11-12 22:21:36,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-12 22:21:36,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:36,706 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:36,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:36,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:21:36,927 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:21:36,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:36,927 INFO L85 PathProgramCache]: Analyzing trace with hash 895115801, now seen corresponding path program 1 times [2021-11-12 22:21:36,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:36,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396890959] [2021-11-12 22:21:36,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:36,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:36,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:36,930 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:36,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 22:21:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:37,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:21:37,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:21:37,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:21:37,628 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:37,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396890959] [2021-11-12 22:21:37,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396890959] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:37,628 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:37,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-12 22:21:37,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067531301] [2021-11-12 22:21:37,629 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:37,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 22:21:37,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:37,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 22:21:37,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:21:37,630 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:21:38,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:38,196 INFO L93 Difference]: Finished difference Result 151 states and 157 transitions. [2021-11-12 22:21:38,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:21:38,198 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-11-12 22:21:38,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:38,199 INFO L225 Difference]: With dead ends: 151 [2021-11-12 22:21:38,200 INFO L226 Difference]: Without dead ends: 151 [2021-11-12 22:21:38,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:21:38,201 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 142 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 448.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.67ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 507.41ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:38,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 315 Invalid, 100 Unknown, 0 Unchecked, 2.67ms Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 507.41ms Time] [2021-11-12 22:21:38,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-12 22:21:38,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 129. [2021-11-12 22:21:38,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 101 states have (on average 1.306930693069307) internal successors, (132), 126 states have internal predecessors, (132), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:38,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 134 transitions. [2021-11-12 22:21:38,214 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 134 transitions. Word has length 57 [2021-11-12 22:21:38,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:38,214 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 134 transitions. [2021-11-12 22:21:38,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:21:38,215 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 134 transitions. [2021-11-12 22:21:38,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-12 22:21:38,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:38,216 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:38,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:38,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:21:38,422 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:21:38,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:38,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1978804018, now seen corresponding path program 1 times [2021-11-12 22:21:38,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:38,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286788150] [2021-11-12 22:21:38,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:38,423 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:38,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:38,424 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:38,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 22:21:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:38,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:21:38,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:21:38,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:39,159 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 12 treesize of output 10 [2021-11-12 22:21:39,565 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:21:39,565 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:39,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286788150] [2021-11-12 22:21:39,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286788150] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:39,565 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:39,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 22:21:39,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910130766] [2021-11-12 22:21:39,566 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:39,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:21:39,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:39,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:21:39,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:21:39,567 INFO L87 Difference]: Start difference. First operand 129 states and 134 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:40,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:40,808 INFO L93 Difference]: Finished difference Result 186 states and 194 transitions. [2021-11-12 22:21:40,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:21:40,809 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-11-12 22:21:40,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:40,811 INFO L225 Difference]: With dead ends: 186 [2021-11-12 22:21:40,811 INFO L226 Difference]: Without dead ends: 186 [2021-11-12 22:21:40,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:21:40,812 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 306 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 988.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.00ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1076.09ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:40,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 271 Invalid, 107 Unknown, 0 Unchecked, 5.00ms Time], IncrementalHoareTripleChecker [12 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 1076.09ms Time] [2021-11-12 22:21:40,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-12 22:21:40,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 125. [2021-11-12 22:21:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 101 states have (on average 1.2673267326732673) internal successors, (128), 122 states have internal predecessors, (128), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:40,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2021-11-12 22:21:40,817 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 58 [2021-11-12 22:21:40,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:40,817 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2021-11-12 22:21:40,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:40,818 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2021-11-12 22:21:40,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-12 22:21:40,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:40,820 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:40,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:41,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:21:41,020 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:21:41,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:41,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1213382400, now seen corresponding path program 1 times [2021-11-12 22:21:41,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:41,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400420701] [2021-11-12 22:21:41,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:41,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:41,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:41,023 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:41,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 22:21:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:41,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:21:41,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:41,597 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-12 22:21:41,597 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 1 case distinctions, treesize of input 35 treesize of output 36 [2021-11-12 22:21:41,618 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-12 22:21:41,618 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 1 case distinctions, treesize of input 36 treesize of output 40 [2021-11-12 22:21:42,115 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-12 22:21:42,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 65 [2021-11-12 22:21:42,125 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-12 22:21:42,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 53 [2021-11-12 22:21:42,512 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:21:42,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:46,995 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 58 treesize of output 56 [2021-11-12 22:21:47,381 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:21:47,382 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:47,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400420701] [2021-11-12 22:21:47,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400420701] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:47,382 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:47,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-12 22:21:47,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588499138] [2021-11-12 22:21:47,382 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:47,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:21:47,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:47,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:21:47,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=121, Unknown=1, NotChecked=0, Total=156 [2021-11-12 22:21:47,384 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:21:47,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:47,649 INFO L93 Difference]: Finished difference Result 128 states and 134 transitions. [2021-11-12 22:21:47,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:21:47,650 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 59 [2021-11-12 22:21:47,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:47,652 INFO L225 Difference]: With dead ends: 128 [2021-11-12 22:21:47,652 INFO L226 Difference]: Without dead ends: 128 [2021-11-12 22:21:47,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=45, Invalid=164, Unknown=1, NotChecked=0, Total=210 [2021-11-12 22:21:47,653 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 7 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.16ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 92.17ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:47,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 464 Invalid, 104 Unknown, 0 Unchecked, 1.16ms Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 78 Unchecked, 92.17ms Time] [2021-11-12 22:21:47,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-12 22:21:47,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-11-12 22:21:47,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 104 states have (on average 1.2692307692307692) internal successors, (132), 125 states have internal predecessors, (132), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:47,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 134 transitions. [2021-11-12 22:21:47,659 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 134 transitions. Word has length 59 [2021-11-12 22:21:47,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:47,660 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 134 transitions. [2021-11-12 22:21:47,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 22:21:47,660 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 134 transitions. [2021-11-12 22:21:47,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-12 22:21:47,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:47,661 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:47,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:47,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:21:47,868 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:21:47,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:47,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1213382399, now seen corresponding path program 1 times [2021-11-12 22:21:47,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:47,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383126043] [2021-11-12 22:21:47,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:47,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:47,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:47,869 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:47,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 22:21:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:48,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:21:48,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:48,320 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-12 22:21:48,320 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-12 22:21:48,382 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-12 22:21:48,383 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 14 treesize of output 19 [2021-11-12 22:21:48,413 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:21:48,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:48,521 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:21:48,521 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:48,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383126043] [2021-11-12 22:21:48,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383126043] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:48,522 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:48,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:21:48,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134564717] [2021-11-12 22:21:48,522 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:48,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:21:48,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:48,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:21:48,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:21:48,524 INFO L87 Difference]: Start difference. First operand 128 states and 134 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:48,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:48,784 INFO L93 Difference]: Finished difference Result 135 states and 141 transitions. [2021-11-12 22:21:48,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:21:48,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-11-12 22:21:48,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:48,786 INFO L225 Difference]: With dead ends: 135 [2021-11-12 22:21:48,786 INFO L226 Difference]: Without dead ends: 135 [2021-11-12 22:21:48,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:21:48,787 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 42 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 228.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.67ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 256.53ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:48,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 84 Invalid, 39 Unknown, 0 Unchecked, 0.67ms Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 256.53ms Time] [2021-11-12 22:21:48,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-12 22:21:48,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 132. [2021-11-12 22:21:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 109 states have (on average 1.275229357798165) internal successors, (139), 129 states have internal predecessors, (139), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:48,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 141 transitions. [2021-11-12 22:21:48,792 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 141 transitions. Word has length 59 [2021-11-12 22:21:48,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:48,792 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 141 transitions. [2021-11-12 22:21:48,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:48,793 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 141 transitions. [2021-11-12 22:21:48,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-12 22:21:48,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:48,794 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:48,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:48,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:21:48,999 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:21:48,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:48,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1430304375, now seen corresponding path program 1 times [2021-11-12 22:21:49,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:49,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586771727] [2021-11-12 22:21:49,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:49,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:49,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:49,001 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:49,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-12 22:21:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:49,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:21:49,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:49,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:21:49,565 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 25 treesize of output 21 [2021-11-12 22:21:49,744 INFO L354 Elim1Store]: treesize reduction 46, result has 20.7 percent of original size [2021-11-12 22:21:49,744 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 1 case distinctions, treesize of input 46 treesize of output 36 [2021-11-12 22:21:49,879 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:21:49,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 20 [2021-11-12 22:21:49,917 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:21:49,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:52,043 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.base| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse0 |c_ULTIMATE.start_main_~mem_track~0#1.offset|) |c_ULTIMATE.start_main_#t~mem127#1.base|)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd .cse0 |c_ULTIMATE.start_main_~argv~0#1.offset|))))))))))))) (_ bv1 1)))) is different from false [2021-11-12 22:21:54,065 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.base| (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse1 (bvadd .cse0 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse0 |c_ULTIMATE.start_main_~mem_track~0#1.offset|) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))))))))))) (_ bv1 1)))) is different from false [2021-11-12 22:21:54,219 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:21:54,219 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:54,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586771727] [2021-11-12 22:21:54,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586771727] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:54,220 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:54,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-11-12 22:21:54,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293906660] [2021-11-12 22:21:54,220 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:54,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:21:54,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:54,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:21:54,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=65, Unknown=2, NotChecked=34, Total=132 [2021-11-12 22:21:54,221 INFO L87 Difference]: Start difference. First operand 132 states and 141 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:22:10,686 WARN L227 SmtUtils]: Spent 14.21s on a formula simplification. DAG size of input: 51 DAG size of output: 43 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 22:22:19,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:22:19,088 INFO L93 Difference]: Finished difference Result 130 states and 138 transitions. [2021-11-12 22:22:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:22:19,088 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-12 22:22:19,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:22:19,089 INFO L225 Difference]: With dead ends: 130 [2021-11-12 22:22:19,089 INFO L226 Difference]: Without dead ends: 130 [2021-11-12 22:22:19,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 110 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=51, Invalid=108, Unknown=5, NotChecked=46, Total=210 [2021-11-12 22:22:19,090 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 72 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 396.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.17ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 449.49ms IncrementalHoareTripleChecker+Time [2021-11-12 22:22:19,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 297 Invalid, 287 Unknown, 0 Unchecked, 2.17ms Time], IncrementalHoareTripleChecker [5 Valid, 113 Invalid, 0 Unknown, 169 Unchecked, 449.49ms Time] [2021-11-12 22:22:19,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-12 22:22:19,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-12 22:22:19,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 127 states have internal predecessors, (136), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:22:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2021-11-12 22:22:19,095 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 62 [2021-11-12 22:22:19,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:22:19,095 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2021-11-12 22:22:19,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:22:19,096 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2021-11-12 22:22:19,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-12 22:22:19,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:22:19,096 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:22:19,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-12 22:22:19,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:22:19,307 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:22:19,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:22:19,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1430304376, now seen corresponding path program 1 times [2021-11-12 22:22:19,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:22:19,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906762065] [2021-11-12 22:22:19,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:22:19,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:22:19,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:22:19,310 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:22:19,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 22:22:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:22:19,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-12 22:22:19,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:22:19,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-11-12 22:22:19,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:22:19,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-12 22:22:19,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:22:20,028 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:22:20,028 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 1 case distinctions, treesize of input 63 treesize of output 62 [2021-11-12 22:22:20,064 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:22:20,064 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 1 case distinctions, treesize of input 47 treesize of output 46 [2021-11-12 22:22:20,131 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 51 treesize of output 33 [2021-11-12 22:22:20,136 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 30 treesize of output 12 [2021-11-12 22:22:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:22:20,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:22:30,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:22:30,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:22:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:22:31,048 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:22:31,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906762065] [2021-11-12 22:22:31,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906762065] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:22:31,048 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:22:31,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-12 22:22:31,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200218547] [2021-11-12 22:22:31,049 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:22:31,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 22:22:31,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:22:31,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 22:22:31,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=79, Unknown=2, NotChecked=0, Total=110 [2021-11-12 22:22:31,051 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:22:32,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:22:32,702 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2021-11-12 22:22:32,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:22:32,703 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-12 22:22:32,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:22:32,707 INFO L225 Difference]: With dead ends: 129 [2021-11-12 22:22:32,708 INFO L226 Difference]: Without dead ends: 129 [2021-11-12 22:22:32,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=53, Invalid=127, Unknown=2, NotChecked=0, Total=182 [2021-11-12 22:22:32,711 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 69 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1317.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.24ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1468.83ms IncrementalHoareTripleChecker+Time [2021-11-12 22:22:32,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 274 Invalid, 168 Unknown, 0 Unchecked, 2.24ms Time], IncrementalHoareTripleChecker [6 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1468.83ms Time] [2021-11-12 22:22:32,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-12 22:22:32,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-12 22:22:32,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 109 states have (on average 1.238532110091743) internal successors, (135), 126 states have internal predecessors, (135), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:22:32,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 137 transitions. [2021-11-12 22:22:32,718 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 137 transitions. Word has length 62 [2021-11-12 22:22:32,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:22:32,719 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 137 transitions. [2021-11-12 22:22:32,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:22:32,719 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 137 transitions. [2021-11-12 22:22:32,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-12 22:22:32,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:22:32,720 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:22:32,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-12 22:22:32,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:22:32,938 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:22:32,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:22:32,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1064372062, now seen corresponding path program 1 times [2021-11-12 22:22:32,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:22:32,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042478248] [2021-11-12 22:22:32,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:22:32,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:22:32,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:22:32,940 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:22:32,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-12 22:22:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:22:33,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:22:33,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:22:33,439 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 10 treesize of output 8 [2021-11-12 22:22:33,525 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-12 22:22:33,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-12 22:22:33,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-12 22:22:33,815 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:22:33,815 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 1 case distinctions, treesize of input 54 treesize of output 44 [2021-11-12 22:22:34,062 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:22:34,062 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 1 case distinctions, treesize of input 81 treesize of output 47 [2021-11-12 22:22:34,128 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 61 treesize of output 34 [2021-11-12 22:22:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:22:34,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:22:34,357 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:22:34,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:22:36,376 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128#1.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|) v_DerPreprocessor_1)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))))))))) (_ bv1 1)))) is different from false [2021-11-12 22:22:38,406 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|) v_DerPreprocessor_1))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))))))))) (_ bv1 1)))) is different from false [2021-11-12 22:22:40,463 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem127#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse3 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse3 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse3 |ULTIMATE.start_main_~mem_track~0#1.offset|) |ULTIMATE.start_main_#t~mem127#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|) v_DerPreprocessor_1)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))))))) (_ bv1 1)))) is different from false [2021-11-12 22:22:45,731 INFO L354 Elim1Store]: treesize reduction 9, result has 81.6 percent of original size [2021-11-12 22:22:45,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 85 treesize of output 116 [2021-11-12 22:22:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:22:46,253 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:22:46,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042478248] [2021-11-12 22:22:46,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042478248] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:22:46,253 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:22:46,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [] total 15 [2021-11-12 22:22:46,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827442558] [2021-11-12 22:22:46,253 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:22:46,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:22:46,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:22:46,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:22:46,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=121, Unknown=3, NotChecked=72, Total=240 [2021-11-12 22:22:46,255 INFO L87 Difference]: Start difference. First operand 129 states and 137 transitions. Second operand has 16 states, 15 states have (on average 2.8) internal successors, (42), 16 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:22:48,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:22:48,129 INFO L93 Difference]: Finished difference Result 146 states and 153 transitions. [2021-11-12 22:22:48,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:22:48,130 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 16 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-11-12 22:22:48,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:22:48,131 INFO L225 Difference]: With dead ends: 146 [2021-11-12 22:22:48,131 INFO L226 Difference]: Without dead ends: 146 [2021-11-12 22:22:48,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 115 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=80, Invalid=201, Unknown=3, NotChecked=96, Total=380 [2021-11-12 22:22:48,132 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 192 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 899.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.69ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 270 IncrementalHoareTripleChecker+Unchecked, 998.02ms IncrementalHoareTripleChecker+Time [2021-11-12 22:22:48,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 277 Invalid, 469 Unknown, 0 Unchecked, 2.69ms Time], IncrementalHoareTripleChecker [21 Valid, 178 Invalid, 0 Unknown, 270 Unchecked, 998.02ms Time] [2021-11-12 22:22:48,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-12 22:22:48,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 135. [2021-11-12 22:22:48,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 115 states have (on average 1.2521739130434784) internal successors, (144), 132 states have internal predecessors, (144), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:22:48,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2021-11-12 22:22:48,137 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 66 [2021-11-12 22:22:48,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:22:48,137 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2021-11-12 22:22:48,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 16 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:22:48,138 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2021-11-12 22:22:48,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-12 22:22:48,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:22:48,139 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:22:48,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-12 22:22:48,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:22:48,351 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:22:48,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:22:48,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1064372061, now seen corresponding path program 1 times [2021-11-12 22:22:48,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:22:48,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019144845] [2021-11-12 22:22:48,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:22:48,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:22:48,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:22:48,353 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:22:48,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-12 22:22:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:22:48,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-12 22:22:48,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:22:48,994 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 12 treesize of output 10 [2021-11-12 22:22:49,086 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-12 22:22:49,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-11-12 22:22:49,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:22:49,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-12 22:22:49,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-12 22:22:49,462 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:22:49,463 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 1 case distinctions, treesize of input 76 treesize of output 66 [2021-11-12 22:22:49,521 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:22:49,521 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 1 case distinctions, treesize of input 60 treesize of output 59 [2021-11-12 22:22:49,835 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:22:49,836 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 1 case distinctions, treesize of input 132 treesize of output 71 [2021-11-12 22:22:49,887 INFO L354 Elim1Store]: treesize reduction 77, result has 13.5 percent of original size [2021-11-12 22:22:49,887 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 1 case distinctions, treesize of input 86 treesize of output 43 [2021-11-12 22:22:50,077 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 64 treesize of output 37 [2021-11-12 22:22:50,084 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 34 treesize of output 16 [2021-11-12 22:22:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:22:50,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:22:51,109 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:22:51,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-12 22:22:51,112 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:22:51,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-11-12 22:22:53,179 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64))) (let ((.cse0 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|)) (.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv0 32)) (_ bv1 64) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128#1.base|) .cse0 v_DerPreprocessor_3)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128#1.base|) .cse0 v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))) (forall ((|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64))) (let ((.cse2 ((_ sign_extend 32) (_ bv0 32))) (.cse3 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128#1.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|) v_DerPreprocessor_3)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|)))) (bvule (bvadd .cse2 .cse3) (bvadd .cse2 (_ bv1 64) .cse3))))) is different from false [2021-11-12 22:22:55,266 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64))) (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)) (.cse1 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv0 32)) (_ bv1 64) (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) .cse1 v_DerPreprocessor_3)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) .cse1 v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))) (forall ((|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64))) (let ((.cse3 ((_ sign_extend 32) (_ bv0 32))) (.cse4 (let ((.cse6 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6))) (store |c_#memory_$Pointer$.offset| .cse5 (store (select |c_#memory_$Pointer$.offset| .cse5) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|) v_DerPreprocessor_3))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6)))) (bvule (bvadd .cse3 .cse4) (bvadd .cse3 (_ bv1 64) .cse4))))) is different from false [2021-11-12 22:22:57,461 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem127#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem127#1.offset| (_ BitVec 64))) (let ((.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (let ((.cse6 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse5 (bvadd .cse6 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse4 (bvadd .cse6 |ULTIMATE.start_main_~mem_track~0#1.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse4 |ULTIMATE.start_main_#t~mem127#1.offset|))) (.cse3 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse4 |ULTIMATE.start_main_#t~mem127#1.base|)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse5))) (store .cse2 .cse3 (store (select .cse2 .cse3) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|) v_DerPreprocessor_3)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse5))))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 (_ bv1 64) .cse1)))) (forall ((|ULTIMATE.start_main_#t~mem127#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_3 (_ BitVec 64)) (v_DerPreprocessor_2 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem127#1.offset| (_ BitVec 64))) (let ((.cse13 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse10 (bvadd .cse13 |ULTIMATE.start_main_~mem_track~0#1.offset|))) (let ((.cse12 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse10 |ULTIMATE.start_main_#t~mem127#1.base|))) (.cse11 (bvadd .cse13 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse8 (select (select .cse12 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse11)) (.cse9 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (_ bv0 32)) (_ bv1 64) (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse10 |ULTIMATE.start_main_#t~mem127#1.offset|)))) (store .cse7 .cse8 (store (select .cse7 .cse8) .cse9 v_DerPreprocessor_3))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse11)) (select |c_#length| (select (select (store .cse12 .cse8 (store (select .cse12 .cse8) .cse9 v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse11))))))))) is different from false [2021-11-12 22:22:58,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:22:58,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:22:58,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 22:22:58,794 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-12 22:22:58,795 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 33 treesize of output 32 [2021-11-12 22:22:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:22:58,865 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:22:58,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019144845] [2021-11-12 22:22:58,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019144845] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:22:58,865 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:22:58,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 10] imperfect sequences [] total 17 [2021-11-12 22:22:58,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067486902] [2021-11-12 22:22:58,866 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:22:58,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-12 22:22:58,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:22:58,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-12 22:22:58,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=171, Unknown=3, NotChecked=84, Total=306 [2021-11-12 22:22:58,867 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:23:11,430 WARN L227 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 71 DAG size of output: 34 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 22:23:14,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:23:14,963 INFO L93 Difference]: Finished difference Result 145 states and 151 transitions. [2021-11-12 22:23:14,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:23:14,965 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-11-12 22:23:14,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:23:14,966 INFO L225 Difference]: With dead ends: 145 [2021-11-12 22:23:14,966 INFO L226 Difference]: Without dead ends: 145 [2021-11-12 22:23:14,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=126, Invalid=389, Unknown=3, NotChecked=132, Total=650 [2021-11-12 22:23:14,967 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 174 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2615.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.52ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 283 IncrementalHoareTripleChecker+Unchecked, 2853.14ms IncrementalHoareTripleChecker+Time [2021-11-12 22:23:14,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 420 Invalid, 628 Unknown, 0 Unchecked, 3.52ms Time], IncrementalHoareTripleChecker [18 Valid, 327 Invalid, 0 Unknown, 283 Unchecked, 2853.14ms Time] [2021-11-12 22:23:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-12 22:23:14,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 135. [2021-11-12 22:23:14,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 132 states have internal predecessors, (142), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:23:14,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 144 transitions. [2021-11-12 22:23:14,972 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 144 transitions. Word has length 66 [2021-11-12 22:23:14,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:23:14,973 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 144 transitions. [2021-11-12 22:23:14,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:23:14,973 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 144 transitions. [2021-11-12 22:23:14,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-12 22:23:14,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:23:14,974 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:23:14,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-12 22:23:15,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:23:15,187 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:23:15,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:23:15,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1328353215, now seen corresponding path program 1 times [2021-11-12 22:23:15,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:23:15,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840953566] [2021-11-12 22:23:15,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:23:15,188 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:23:15,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:23:15,189 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:23:15,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-12 22:23:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:23:15,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 22:23:15,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:23:15,825 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 10 treesize of output 8 [2021-11-12 22:23:15,936 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-12 22:23:15,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-12 22:23:15,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-12 22:23:16,228 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:23:16,229 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 1 case distinctions, treesize of input 54 treesize of output 44 [2021-11-12 22:23:16,436 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:23:16,436 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 1 case distinctions, treesize of input 82 treesize of output 48 [2021-11-12 22:23:16,660 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-12 22:23:16,660 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 1 case distinctions, treesize of input 83 treesize of output 49 [2021-11-12 22:23:16,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 34 [2021-11-12 22:23:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-12 22:23:16,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:23:16,971 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:23:16,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:23:18,989 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130#1.base|) (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|)))))))) (_ bv1 1)))) is different from false [2021-11-12 22:23:21,011 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))))) (_ bv1 1)))) is different from false [2021-11-12 22:23:21,055 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:23:21,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:23:23,098 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128#1.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|) v_DerPreprocessor_5)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))) (_ bv1 1)))) is different from false [2021-11-12 22:23:25,148 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|) v_DerPreprocessor_5))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))) (_ bv1 1)))) is different from false [2021-11-12 22:23:27,257 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem127#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 64)) (v_DerPreprocessor_4 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse5 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse5 |ULTIMATE.start_main_~mem_track~0#1.offset|) |ULTIMATE.start_main_#t~mem127#1.base|)))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|) v_DerPreprocessor_5)))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_4)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))))))))) (_ bv1 1)))) is different from false [2021-11-12 22:25:00,534 INFO L354 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-11-12 22:25:00,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 51 [2021-11-12 22:25:00,603 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 3 not checked. [2021-11-12 22:25:00,603 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:00,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840953566] [2021-11-12 22:25:00,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840953566] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:25:00,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [210793878] [2021-11-12 22:25:00,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:00,603 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:25:00,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:25:00,605 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:25:00,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-12 22:25:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:01,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-12 22:25:01,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:01,727 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-12 22:25:01,727 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 18 treesize of output 18 [2021-11-12 22:25:01,796 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-12 22:25:01,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-12 22:25:01,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-12 22:25:02,119 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:25:02,120 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 1 case distinctions, treesize of input 66 treesize of output 47 [2021-11-12 22:25:02,941 INFO L354 Elim1Store]: treesize reduction 105, result has 27.6 percent of original size [2021-11-12 22:25:02,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 84 [2021-11-12 22:25:03,168 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-12 22:25:03,168 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 1 case distinctions, treesize of input 84 treesize of output 50 [2021-11-12 22:25:03,293 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 61 treesize of output 34 [2021-11-12 22:25:03,308 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-11-12 22:25:03,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:03,354 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:25:03,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:25:05,373 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 64))) (= (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130#1.base|) (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_6)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|)))))))))) (_ bv1 1)) (_ bv0 1))) is different from false [2021-11-12 22:25:07,398 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_6))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))))))))) (_ bv1 1)))) is different from false [2021-11-12 22:25:07,440 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:25:07,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-12 22:25:09,478 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 64))) (= (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128#1.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|) v_DerPreprocessor_7)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_6)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))))))))))))) (_ bv1 1)) (_ bv0 1))) is different from false [2021-11-12 22:25:11,523 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 64))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|) v_DerPreprocessor_7))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_6)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))))))))))))))))) is different from false [2021-11-12 22:25:13,617 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse5 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse5 |ULTIMATE.start_main_~mem_track~0#1.offset|) |c_ULTIMATE.start_main_#t~mem127#1.base|)))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|) v_DerPreprocessor_7)))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_6)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))))))))))) (_ bv1 1)))) is different from false [2021-11-12 22:25:15,698 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_7 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 64))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse5 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse5 |ULTIMATE.start_main_~mem_track~0#1.offset|) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|) v_DerPreprocessor_7)))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_6)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))))))))))))))))))) is different from false [2021-11-12 22:25:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 3 not checked. [2021-11-12 22:25:19,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [210793878] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:25:19,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321233537] [2021-11-12 22:25:19,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:19,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:25:19,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:25:19,310 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:25:19,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-12 22:25:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:19,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 22:25:19,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:19,579 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 10 treesize of output 8 [2021-11-12 22:25:19,657 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-12 22:25:19,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-12 22:25:19,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-12 22:25:19,870 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:25:19,871 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 1 case distinctions, treesize of input 55 treesize of output 45 [2021-11-12 22:25:19,995 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:25:19,995 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 1 case distinctions, treesize of input 82 treesize of output 48 [2021-11-12 22:25:20,174 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-12 22:25:20,174 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 1 case distinctions, treesize of input 83 treesize of output 49 [2021-11-12 22:25:20,260 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 61 treesize of output 34 [2021-11-12 22:25:20,274 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-12 22:25:20,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:20,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:25:20,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:25:22,337 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (v_DerPreprocessor_8 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130#1.base|) (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_8)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|)))))))) (_ bv1 1)))) is different from false [2021-11-12 22:25:35,070 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:25:35,071 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-12 22:25:37,113 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_9 (_ BitVec 64)) (v_DerPreprocessor_8 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128#1.base|) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|) v_DerPreprocessor_9)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_8)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))))))))))) is different from false [2021-11-12 22:25:39,148 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_9 (_ BitVec 64)) (v_DerPreprocessor_8 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|) v_DerPreprocessor_9))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_8)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))))))))) (_ bv1 1)))) is different from false [2021-11-12 22:25:41,243 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem127#1.base| (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_9 (_ BitVec 64)) (v_DerPreprocessor_8 (_ BitVec 64)) (|ULTIMATE.start_main_~j~0#1| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse2 (bvadd .cse5 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) (bvadd .cse5 |ULTIMATE.start_main_~mem_track~0#1.offset|) |ULTIMATE.start_main_#t~mem127#1.base|)))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|) v_DerPreprocessor_9)))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_8)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))))))))))))))) (_ bv1 1)))) is different from false [2021-11-12 22:26:58,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-12 22:26:58,622 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-12 22:26:58,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 12, 11] total 30 [2021-11-12 22:26:58,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796745628] [2021-11-12 22:26:58,623 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-12 22:26:58,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-12 22:26:58,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:26:58,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-12 22:26:58,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=325, Unknown=18, NotChecked=780, Total=1260 [2021-11-12 22:26:58,624 INFO L87 Difference]: Start difference. First operand 135 states and 144 transitions. Second operand has 31 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 31 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 22:27:09,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:27:09,961 INFO L93 Difference]: Finished difference Result 149 states and 159 transitions. [2021-11-12 22:27:09,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:27:09,962 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 31 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 71 [2021-11-12 22:27:09,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:27:09,963 INFO L225 Difference]: With dead ends: 149 [2021-11-12 22:27:09,963 INFO L226 Difference]: Without dead ends: 149 [2021-11-12 22:27:09,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 322 SyntacticMatches, 14 SemanticMatches, 38 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 57.6s TimeCoverageRelationStatistics Valid=186, Invalid=453, Unknown=21, NotChecked=900, Total=1560 [2021-11-12 22:27:09,965 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 32 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 735.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.86ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 797 IncrementalHoareTripleChecker+Unchecked, 819.11ms IncrementalHoareTripleChecker+Time [2021-11-12 22:27:09,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 753 Invalid, 909 Unknown, 0 Unchecked, 2.86ms Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 797 Unchecked, 819.11ms Time] [2021-11-12 22:27:09,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-12 22:27:09,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2021-11-12 22:27:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 127 states have (on average 1.2283464566929134) internal successors, (156), 144 states have internal predecessors, (156), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:27:09,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 158 transitions. [2021-11-12 22:27:09,970 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 158 transitions. Word has length 71 [2021-11-12 22:27:09,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:27:09,970 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 158 transitions. [2021-11-12 22:27:09,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 31 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 22:27:09,970 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 158 transitions. [2021-11-12 22:27:09,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-12 22:27:09,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:27:09,972 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:27:09,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-12 22:27:10,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2021-11-12 22:27:10,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-12 22:27:10,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:27:10,583 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-11-12 22:27:10,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:27:10,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1328353214, now seen corresponding path program 1 times [2021-11-12 22:27:10,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:27:10,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697297515] [2021-11-12 22:27:10,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:27:10,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:27:10,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:27:10,585 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:27:10,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ed7ab2-594b-4652-97cc-91505bea4935/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-12 22:27:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:27:11,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 22:27:11,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:27:11,240 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 10 treesize of output 8 [2021-11-12 22:27:11,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:27:11,322 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-12 22:27:11,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-11-12 22:27:11,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-12 22:27:11,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-12 22:27:11,575 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:27:11,575 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 1 case distinctions, treesize of input 76 treesize of output 75 [2021-11-12 22:27:11,614 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:27:11,614 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 1 case distinctions, treesize of input 60 treesize of output 50 [2021-11-12 22:27:11,846 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-12 22:27:11,846 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 1 case distinctions, treesize of input 132 treesize of output 71 [2021-11-12 22:27:11,882 INFO L354 Elim1Store]: treesize reduction 77, result has 13.5 percent of original size [2021-11-12 22:27:11,883 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 1 case distinctions, treesize of input 86 treesize of output 43 [2021-11-12 22:27:12,189 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-12 22:27:12,189 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 1 case distinctions, treesize of input 136 treesize of output 75 [2021-11-12 22:27:12,235 INFO L354 Elim1Store]: treesize reduction 80, result has 13.0 percent of original size [2021-11-12 22:27:12,235 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 1 case distinctions, treesize of input 88 treesize of output 43 [2021-11-12 22:27:12,525 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 64 treesize of output 37 [2021-11-12 22:27:12,530 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 34 treesize of output 16 [2021-11-12 22:27:12,616 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-12 22:27:12,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:27:14,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:27:14,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-12 22:27:14,473 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:27:14,473 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 22:27:16,604 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_11 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse0 (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |c_ULTIMATE.start_main_~j~0#1|))) (.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (bvule (bvadd ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130#1.base|) .cse0 v_DerPreprocessor_10)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) (_ bv1 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130#1.base|) .cse0 v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))) (forall ((|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse2 ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32)))) (.cse3 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130#1.base|) (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |c_ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_10)) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|)))) (bvule (bvadd .cse2 .cse3) (bvadd .cse2 .cse3 (_ bv1 64)))))) is different from false [2021-11-12 22:27:18,837 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_11 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse2 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)) (.cse1 (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |c_ULTIMATE.start_main_~j~0#1|)))) (bvule (bvadd ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32))) (_ bv1 64) (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) .cse1 v_DerPreprocessor_10)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) .cse1 v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))) (forall ((|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse3 ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32)))) (.cse4 (let ((.cse6 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6))) (store |c_#memory_$Pointer$.offset| .cse5 (store (select |c_#memory_$Pointer$.offset| .cse5) (bvadd |ULTIMATE.start_main_#t~mem130#1.offset| ((_ sign_extend 32) |c_ULTIMATE.start_main_~j~0#1|)) v_DerPreprocessor_10))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6)))) (bvule (bvadd .cse3 .cse4) (bvadd .cse3 (_ bv1 64) .cse4))))) is different from false [2021-11-12 22:27:29,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:27:29,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 293 [2021-11-12 22:27:29,941 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:27:29,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 332 [2021-11-12 22:27:32,034 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_prenex_2 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_prenex_1 (_ BitVec 64))) (let ((.cse3 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|))) (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128#1.base|) .cse3 v_DerPreprocessor_12))) (.cse4 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4)) (.cse2 (bvadd ((_ sign_extend 32) (_ bv0 32)) v_prenex_1))) (bvule (bvadd ((_ sign_extend 32) (_ bv1 32)) (_ bv1 64) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128#1.base|) .cse3 v_DerPreprocessor_13)))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_prenex_2))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse5 .cse1 (store (select .cse5 .cse1) .cse2 v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4))))))) (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse6 ((_ sign_extend 32) (_ bv1 32))) (.cse7 (let ((.cse11 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse10 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128#1.base|) .cse10 v_DerPreprocessor_13))) (.cse9 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128#1.base|) .cse10 v_DerPreprocessor_12)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse11))) (store .cse8 .cse9 (store (select .cse8 .cse9) (bvadd ((_ sign_extend 32) (_ bv0 32)) |ULTIMATE.start_main_#t~mem130#1.offset|) v_DerPreprocessor_10)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse11)))) (bvule (bvadd .cse6 .cse7) (bvadd .cse6 (_ bv1 64) .cse7))))) is different from false [2021-11-12 22:27:34,166 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64))) (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 (let ((.cse6 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6)) (.cse5 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| .cse4 (store (select |c_#memory_$Pointer$.offset| .cse4) .cse5 v_DerPreprocessor_13))) (.cse3 (select (select (store |c_#memory_$Pointer$.base| .cse4 (store (select |c_#memory_$Pointer$.base| .cse4) .cse5 v_DerPreprocessor_12)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6))) (store .cse2 .cse3 (store (select .cse2 .cse3) (bvadd ((_ sign_extend 32) (_ bv0 32)) |ULTIMATE.start_main_#t~mem130#1.offset|) v_DerPreprocessor_10)))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6)))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 (_ bv1 64) .cse1)))) (forall ((v_DerPreprocessor_13 (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_prenex_2 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_prenex_1 (_ BitVec 64))) (let ((.cse12 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse10 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse12)) (.cse11 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|))) (let ((.cse13 (store |c_#memory_$Pointer$.base| .cse10 (store (select |c_#memory_$Pointer$.base| .cse10) .cse11 v_DerPreprocessor_12)))) (let ((.cse8 (select (select .cse13 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse12)) (.cse9 (bvadd ((_ sign_extend 32) (_ bv0 32)) v_prenex_1))) (bvule (bvadd (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| .cse10 (store (select |c_#memory_$Pointer$.offset| .cse10) .cse11 v_DerPreprocessor_13)))) (store .cse7 .cse8 (store (select .cse7 .cse8) .cse9 v_prenex_2))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse12) ((_ sign_extend 32) (_ bv1 32)) (_ bv1 64)) (select |c_#length| (select (select (store .cse13 .cse8 (store (select .cse13 .cse8) .cse9 v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse12))))))))) is different from false [2021-11-12 22:27:36,456 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem127#1.base| (_ BitVec 64)) (v_DerPreprocessor_13 (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (v_DerPreprocessor_11 (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (v_prenex_2 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_prenex_1 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem127#1.offset| (_ BitVec 64))) (let ((.cse10 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse6 (bvadd .cse10 |ULTIMATE.start_main_~mem_track~0#1.offset|))) (let ((.cse9 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse6 |ULTIMATE.start_main_#t~mem127#1.base|))) (.cse7 (bvadd .cse10 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse4 (select (select .cse9 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7)) (.cse5 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|))) (let ((.cse8 (store .cse9 .cse4 (store (select .cse9 .cse4) .cse5 v_DerPreprocessor_12)))) (let ((.cse1 (select (select .cse8 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7)) (.cse2 (bvadd ((_ sign_extend 32) (_ bv0 32)) v_prenex_1))) (bvule (bvadd ((_ sign_extend 32) (_ bv1 32)) (_ bv1 64) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse6 |ULTIMATE.start_main_#t~mem127#1.offset|)))) (store .cse3 .cse4 (store (select .cse3 .cse4) .cse5 v_DerPreprocessor_13))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_prenex_2))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7)) (select |c_#length| (select (select (store .cse8 .cse1 (store (select .cse8 .cse1) .cse2 v_DerPreprocessor_11)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7)))))))))) (forall ((|ULTIMATE.start_main_#t~mem127#1.base| (_ BitVec 64)) (v_DerPreprocessor_13 (_ BitVec 64)) (|ULTIMATE.start_main_~mem_track~0#1.offset| (_ BitVec 64)) (v_DerPreprocessor_12 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem130#1.offset| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem128#1.offset| (_ BitVec 64)) (v_DerPreprocessor_10 (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem127#1.offset| (_ BitVec 64))) (let ((.cse11 ((_ sign_extend 32) (_ bv1 32))) (.cse12 (let ((.cse21 (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)))) (let ((.cse18 (bvadd .cse21 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse20 (bvadd .cse21 |ULTIMATE.start_main_~mem_track~0#1.offset|))) (let ((.cse15 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse20 |ULTIMATE.start_main_#t~mem127#1.base|)))) (let ((.cse16 (select (select .cse15 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse18)) (.cse17 (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem128#1.offset|))) (let ((.cse13 (let ((.cse19 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base|) .cse20 |ULTIMATE.start_main_#t~mem127#1.offset|)))) (store .cse19 .cse16 (store (select .cse19 .cse16) .cse17 v_DerPreprocessor_13)))) (.cse14 (select (select (store .cse15 .cse16 (store (select .cse15 .cse16) .cse17 v_DerPreprocessor_12)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse18))) (store .cse13 .cse14 (store (select .cse13 .cse14) (bvadd ((_ sign_extend 32) (_ bv0 32)) |ULTIMATE.start_main_#t~mem130#1.offset|) v_DerPreprocessor_10)))))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse18))))) (bvule (bvadd .cse11 .cse12) (bvadd .cse11 (_ bv1 64) .cse12))))) is different from false [2021-11-12 22:27:51,648 WARN L227 SmtUtils]: Spent 14.57s on a formula simplification. DAG size of input: 239 DAG size of output: 242 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)