./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32a779d95d64b7b3ae1a801430dde2c7d15b3372c5d0cdd47679441a42687631 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:05:47,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:05:47,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:05:47,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:05:47,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:05:47,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:05:47,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:05:47,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:05:47,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:05:47,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:05:47,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:05:47,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:05:47,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:05:47,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:05:47,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:05:47,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:05:47,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:05:47,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:05:47,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:05:47,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:05:47,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:05:47,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:05:47,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:05:47,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:05:47,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:05:47,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:05:47,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:05:47,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:05:47,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:05:47,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:05:47,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:05:47,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:05:47,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:05:47,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:05:47,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:05:47,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:05:47,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:05:47,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:05:47,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:05:47,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:05:47,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:05:47,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-23 13:05:47,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:05:47,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:05:47,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:05:47,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:05:47,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:05:47,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:05:47,369 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:05:47,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:05:47,370 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:05:47,370 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:05:47,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:05:47,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:05:47,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:05:47,372 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 13:05:47,372 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 13:05:47,372 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 13:05:47,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:05:47,373 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 13:05:47,373 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:05:47,373 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:05:47,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:05:47,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:05:47,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:05:47,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:05:47,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:05:47,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:05:47,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:05:47,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:05:47,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:05:47,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a779d95d64b7b3ae1a801430dde2c7d15b3372c5d0cdd47679441a42687631 [2021-11-23 13:05:47,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:05:47,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:05:47,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:05:47,700 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:05:47,703 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:05:47,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i [2021-11-23 13:05:47,791 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/data/55ea10611/4c202c623bca4f1eb4e9b82c9240b002/FLAGa7bb15cc2 [2021-11-23 13:05:48,410 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:05:48,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i [2021-11-23 13:05:48,428 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/data/55ea10611/4c202c623bca4f1eb4e9b82c9240b002/FLAGa7bb15cc2 [2021-11-23 13:05:48,626 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/data/55ea10611/4c202c623bca4f1eb4e9b82c9240b002 [2021-11-23 13:05:48,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:05:48,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:05:48,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:05:48,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:05:48,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:05:48,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:05:48" (1/1) ... [2021-11-23 13:05:48,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1454e85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:05:48, skipping insertion in model container [2021-11-23 13:05:48,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:05:48" (1/1) ... [2021-11-23 13:05:48,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:05:48,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:05:49,218 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[33021,33034] [2021-11-23 13:05:49,408 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[44590,44603] [2021-11-23 13:05:49,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:05:49,431 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) [2021-11-23 13:05:49,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6de2dc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:05:49, skipping insertion in model container [2021-11-23 13:05:49,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:05:49,432 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 13:05:49,434 INFO L158 Benchmark]: Toolchain (without parser) took 803.02ms. Allocated memory was 88.1MB in the beginning and 117.4MB in the end (delta: 29.4MB). Free memory was 50.4MB in the beginning and 81.3MB in the end (delta: -31.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:05:49,435 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory was 58.9MB in the beginning and 58.9MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:05:49,436 INFO L158 Benchmark]: CACSL2BoogieTranslator took 795.58ms. Allocated memory was 88.1MB in the beginning and 117.4MB in the end (delta: 29.4MB). Free memory was 50.1MB in the beginning and 81.4MB in the end (delta: -31.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:05:49,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory was 58.9MB in the beginning and 58.9MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 795.58ms. Allocated memory was 88.1MB in the beginning and 117.4MB in the end (delta: 29.4MB). Free memory was 50.1MB in the beginning and 81.4MB in the end (delta: -31.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32a779d95d64b7b3ae1a801430dde2c7d15b3372c5d0cdd47679441a42687631 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:05:51,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:05:51,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:05:51,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:05:51,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:05:51,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:05:51,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:05:51,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:05:51,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:05:51,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:05:51,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:05:51,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:05:51,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:05:51,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:05:51,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:05:51,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:05:51,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:05:51,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:05:51,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:05:51,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:05:51,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:05:51,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:05:51,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:05:51,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:05:51,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:05:51,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:05:51,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:05:51,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:05:51,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:05:51,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:05:51,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:05:51,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:05:51,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:05:51,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:05:51,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:05:51,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:05:51,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:05:51,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:05:51,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:05:51,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:05:51,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:05:51,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-23 13:05:51,856 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:05:51,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:05:51,857 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:05:51,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:05:51,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:05:51,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:05:51,860 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:05:51,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:05:51,861 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:05:51,861 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:05:51,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:05:51,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:05:51,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:05:51,863 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 13:05:51,863 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 13:05:51,863 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 13:05:51,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:05:51,864 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 13:05:51,864 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 13:05:51,864 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 13:05:51,864 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:05:51,864 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:05:51,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:05:51,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:05:51,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:05:51,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:05:51,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:05:51,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:05:51,866 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 13:05:51,866 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 13:05:51,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:05:51,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 13:05:51,867 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_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a779d95d64b7b3ae1a801430dde2c7d15b3372c5d0cdd47679441a42687631 [2021-11-23 13:05:52,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:05:52,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:05:52,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:05:52,240 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:05:52,240 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:05:52,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i [2021-11-23 13:05:52,306 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/data/2a7a396ff/a2bf9dc8001748179280cfac56e30046/FLAG6251a388a [2021-11-23 13:05:52,955 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:05:52,956 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i [2021-11-23 13:05:52,982 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/data/2a7a396ff/a2bf9dc8001748179280cfac56e30046/FLAG6251a388a [2021-11-23 13:05:53,175 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/data/2a7a396ff/a2bf9dc8001748179280cfac56e30046 [2021-11-23 13:05:53,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:05:53,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:05:53,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:05:53,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:05:53,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:05:53,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:05:53" (1/1) ... [2021-11-23 13:05:53,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f3e837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:05:53, skipping insertion in model container [2021-11-23 13:05:53,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:05:53" (1/1) ... [2021-11-23 13:05:53,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:05:53,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:05:53,762 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[33021,33034] [2021-11-23 13:05:53,920 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[44590,44603] [2021-11-23 13:05:53,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:05:53,947 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 13:05:53,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:05:53,990 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[33021,33034] [2021-11-23 13:05:54,081 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[44590,44603] [2021-11-23 13:05:54,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:05:54,095 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:05:54,121 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[33021,33034] [2021-11-23 13:05:54,162 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[44590,44603] [2021-11-23 13:05:54,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:05:54,235 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:05:54,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:05:54 WrapperNode [2021-11-23 13:05:54,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:05:54,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:05:54,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:05:54,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:05:54,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:05:54" (1/1) ... [2021-11-23 13:05:54,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:05:54" (1/1) ... [2021-11-23 13:05:54,365 INFO L137 Inliner]: procedures = 180, calls = 336, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1235 [2021-11-23 13:05:54,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:05:54,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:05:54,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:05:54,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:05:54,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:05:54" (1/1) ... [2021-11-23 13:05:54,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:05:54" (1/1) ... [2021-11-23 13:05:54,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:05:54" (1/1) ... [2021-11-23 13:05:54,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:05:54" (1/1) ... [2021-11-23 13:05:54,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:05:54" (1/1) ... [2021-11-23 13:05:54,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:05:54" (1/1) ... [2021-11-23 13:05:54,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:05:54" (1/1) ... [2021-11-23 13:05:54,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:05:54,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:05:54,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:05:54,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:05:54,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:05:54" (1/1) ... [2021-11-23 13:05:54,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:05:54,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:05:54,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:05:54,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:05:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 13:05:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 13:05:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:05:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:05:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:05:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:05:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 13:05:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:05:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:05:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 13:05:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 13:05:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:05:54,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:05:54,963 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:05:54,973 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:06:00,485 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:06:00,500 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:06:00,500 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-23 13:06:00,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:06:00 BoogieIcfgContainer [2021-11-23 13:06:00,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:06:00,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:06:00,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:06:00,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:06:00,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:05:53" (1/3) ... [2021-11-23 13:06:00,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfa62ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:06:00, skipping insertion in model container [2021-11-23 13:06:00,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:05:54" (2/3) ... [2021-11-23 13:06:00,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfa62ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:06:00, skipping insertion in model container [2021-11-23 13:06:00,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:06:00" (3/3) ... [2021-11-23 13:06:00,511 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test3-2.i [2021-11-23 13:06:00,516 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:06:00,516 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 643 error locations. [2021-11-23 13:06:00,589 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:06:00,596 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 [2021-11-23 13:06:00,596 INFO L340 AbstractCegarLoop]: Starting to check reachability of 643 error locations. [2021-11-23 13:06:00,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 1284 states, 640 states have (on average 2.246875) internal successors, (1438), 1283 states have internal predecessors, (1438), 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) [2021-11-23 13:06:00,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 13:06:00,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:00,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 13:06:00,642 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:06:00,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:00,648 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-23 13:06:00,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:00,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229411103] [2021-11-23 13:06:00,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:00,660 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:00,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:00,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:00,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 13:06:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:00,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:06:00,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:00,901 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 [2021-11-23 13:06:00,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:00,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:00,936 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:00,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229411103] [2021-11-23 13:06:00,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229411103] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:00,937 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:00,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 13:06:00,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82303607] [2021-11-23 13:06:00,940 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:00,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:06:00,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:00,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:06:00,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:06:00,974 INFO L87 Difference]: Start difference. First operand has 1284 states, 640 states have (on average 2.246875) internal successors, (1438), 1283 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:03,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:03,345 INFO L93 Difference]: Finished difference Result 1456 states and 1537 transitions. [2021-11-23 13:06:03,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:06:03,349 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 [2021-11-23 13:06:03,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:03,371 INFO L225 Difference]: With dead ends: 1456 [2021-11-23 13:06:03,371 INFO L226 Difference]: Without dead ends: 1454 [2021-11-23 13:06:03,373 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 [2021-11-23 13:06:03,377 INFO L933 BasicCegarLoop]: 772 mSDtfsCounter, 1216 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:03,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1216 Valid, 922 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 13:06:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2021-11-23 13:06:03,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1269. [2021-11-23 13:06:03,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 640 states have (on average 2.096875) internal successors, (1342), 1268 states have internal predecessors, (1342), 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) [2021-11-23 13:06:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1342 transitions. [2021-11-23 13:06:03,515 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1342 transitions. Word has length 3 [2021-11-23 13:06:03,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:03,516 INFO L470 AbstractCegarLoop]: Abstraction has 1269 states and 1342 transitions. [2021-11-23 13:06:03,516 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) [2021-11-23 13:06:03,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1342 transitions. [2021-11-23 13:06:03,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 13:06:03,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:03,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 13:06:03,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:03,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:03,733 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:06:03,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:03,734 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-23 13:06:03,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:03,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243550928] [2021-11-23 13:06:03,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:03,735 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:03,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:03,737 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:03,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 13:06:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:03,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:06:03,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:03,891 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 [2021-11-23 13:06:03,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:03,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:03,955 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:03,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243550928] [2021-11-23 13:06:03,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243550928] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:03,955 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:03,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 13:06:03,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742465185] [2021-11-23 13:06:03,956 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:03,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:06:03,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:03,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:06:03,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:06:03,959 INFO L87 Difference]: Start difference. First operand 1269 states and 1342 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) [2021-11-23 13:06:10,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:10,187 INFO L93 Difference]: Finished difference Result 1968 states and 2090 transitions. [2021-11-23 13:06:10,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:06:10,188 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 [2021-11-23 13:06:10,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:10,202 INFO L225 Difference]: With dead ends: 1968 [2021-11-23 13:06:10,203 INFO L226 Difference]: Without dead ends: 1968 [2021-11-23 13:06:10,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:06:10,207 INFO L933 BasicCegarLoop]: 910 mSDtfsCounter, 1627 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:10,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1627 Valid, 1838 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-23 13:06:10,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2021-11-23 13:06:10,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1304. [2021-11-23 13:06:10,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 684 states have (on average 2.077485380116959) internal successors, (1421), 1303 states have internal predecessors, (1421), 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) [2021-11-23 13:06:10,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1421 transitions. [2021-11-23 13:06:10,260 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1421 transitions. Word has length 3 [2021-11-23 13:06:10,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:10,261 INFO L470 AbstractCegarLoop]: Abstraction has 1304 states and 1421 transitions. [2021-11-23 13:06:10,261 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) [2021-11-23 13:06:10,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1421 transitions. [2021-11-23 13:06:10,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 13:06:10,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:10,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:10,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:10,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:10,483 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:06:10,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:10,484 INFO L85 PathProgramCache]: Analyzing trace with hash 62249618, now seen corresponding path program 1 times [2021-11-23 13:06:10,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:10,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174118432] [2021-11-23 13:06:10,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:10,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:10,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:10,494 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:10,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 13:06:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:10,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:06:10,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:10,681 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 [2021-11-23 13:06:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:10,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:10,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:10,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:10,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174118432] [2021-11-23 13:06:10,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174118432] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:10,745 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:10,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 13:06:10,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814453394] [2021-11-23 13:06:10,746 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:10,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:06:10,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:10,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:06:10,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:06:10,748 INFO L87 Difference]: Start difference. First operand 1304 states and 1421 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:13,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:13,599 INFO L93 Difference]: Finished difference Result 1632 states and 1774 transitions. [2021-11-23 13:06:13,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:06:13,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 13:06:13,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:13,611 INFO L225 Difference]: With dead ends: 1632 [2021-11-23 13:06:13,611 INFO L226 Difference]: Without dead ends: 1632 [2021-11-23 13:06:13,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:06:13,613 INFO L933 BasicCegarLoop]: 1168 mSDtfsCounter, 1027 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:13,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 1506 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 13:06:13,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2021-11-23 13:06:13,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1255. [2021-11-23 13:06:13,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 684 states have (on average 2.0014619883040936) internal successors, (1369), 1254 states have internal predecessors, (1369), 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) [2021-11-23 13:06:13,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1369 transitions. [2021-11-23 13:06:13,653 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1369 transitions. Word has length 8 [2021-11-23 13:06:13,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:13,653 INFO L470 AbstractCegarLoop]: Abstraction has 1255 states and 1369 transitions. [2021-11-23 13:06:13,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:13,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1369 transitions. [2021-11-23 13:06:13,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 13:06:13,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:13,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:13,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:13,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:13,873 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:06:13,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:13,875 INFO L85 PathProgramCache]: Analyzing trace with hash 62249619, now seen corresponding path program 1 times [2021-11-23 13:06:13,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:13,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132567667] [2021-11-23 13:06:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:13,877 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:13,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:13,878 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:13,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 13:06:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:14,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:06:14,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:14,062 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 [2021-11-23 13:06:14,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:14,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:14,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:14,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132567667] [2021-11-23 13:06:14,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132567667] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:14,174 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:14,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 13:06:14,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298680268] [2021-11-23 13:06:14,174 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:14,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:06:14,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:14,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:06:14,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:06:14,176 INFO L87 Difference]: Start difference. First operand 1255 states and 1369 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:19,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:19,331 INFO L93 Difference]: Finished difference Result 1675 states and 1781 transitions. [2021-11-23 13:06:19,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:06:19,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 13:06:19,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:19,345 INFO L225 Difference]: With dead ends: 1675 [2021-11-23 13:06:19,346 INFO L226 Difference]: Without dead ends: 1675 [2021-11-23 13:06:19,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:06:19,348 INFO L933 BasicCegarLoop]: 1346 mSDtfsCounter, 758 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:19,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 2395 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-23 13:06:19,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2021-11-23 13:06:19,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1245. [2021-11-23 13:06:19,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 684 states have (on average 1.9824561403508771) internal successors, (1356), 1244 states have internal predecessors, (1356), 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) [2021-11-23 13:06:19,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1356 transitions. [2021-11-23 13:06:19,395 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1356 transitions. Word has length 8 [2021-11-23 13:06:19,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:19,396 INFO L470 AbstractCegarLoop]: Abstraction has 1245 states and 1356 transitions. [2021-11-23 13:06:19,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:19,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1356 transitions. [2021-11-23 13:06:19,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 13:06:19,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:19,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:19,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:19,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:19,617 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:06:19,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:19,618 INFO L85 PathProgramCache]: Analyzing trace with hash -945574260, now seen corresponding path program 1 times [2021-11-23 13:06:19,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:19,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150728802] [2021-11-23 13:06:19,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:19,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:19,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:19,619 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:19,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 13:06:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:19,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:06:19,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:19,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:19,940 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:19,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150728802] [2021-11-23 13:06:19,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150728802] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:19,940 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:19,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:06:19,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388013747] [2021-11-23 13:06:19,941 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:19,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:06:19,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:19,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:06:19,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:06:19,943 INFO L87 Difference]: Start difference. First operand 1245 states and 1356 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-11-23 13:06:20,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:20,882 INFO L93 Difference]: Finished difference Result 1887 states and 2040 transitions. [2021-11-23 13:06:20,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:06:20,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 13:06:20,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:20,892 INFO L225 Difference]: With dead ends: 1887 [2021-11-23 13:06:20,892 INFO L226 Difference]: Without dead ends: 1887 [2021-11-23 13:06:20,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:06:20,893 INFO L933 BasicCegarLoop]: 1403 mSDtfsCounter, 763 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 3764 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:20,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 3764 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 13:06:20,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2021-11-23 13:06:20,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1485. [2021-11-23 13:06:20,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 924 states have (on average 1.9588744588744589) internal successors, (1810), 1484 states have internal predecessors, (1810), 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) [2021-11-23 13:06:20,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 1810 transitions. [2021-11-23 13:06:20,929 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 1810 transitions. Word has length 11 [2021-11-23 13:06:20,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:20,930 INFO L470 AbstractCegarLoop]: Abstraction has 1485 states and 1810 transitions. [2021-11-23 13:06:20,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-11-23 13:06:20,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 1810 transitions. [2021-11-23 13:06:20,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 13:06:20,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:20,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:20,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-23 13:06:21,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:21,150 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:06:21,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:21,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1258779124, now seen corresponding path program 1 times [2021-11-23 13:06:21,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:21,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946448012] [2021-11-23 13:06:21,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:21,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:21,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:21,151 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:21,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 13:06:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:21,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:06:21,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:21,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:21,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:21,320 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:21,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946448012] [2021-11-23 13:06:21,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946448012] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:21,320 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:21,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 13:06:21,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715799120] [2021-11-23 13:06:21,321 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:21,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:06:21,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:21,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:06:21,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:06:21,322 INFO L87 Difference]: Start difference. First operand 1485 states and 1810 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:21,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:21,361 INFO L93 Difference]: Finished difference Result 1681 states and 1998 transitions. [2021-11-23 13:06:21,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:06:21,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 13:06:21,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:21,370 INFO L225 Difference]: With dead ends: 1681 [2021-11-23 13:06:21,370 INFO L226 Difference]: Without dead ends: 1681 [2021-11-23 13:06:21,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:06:21,372 INFO L933 BasicCegarLoop]: 1227 mSDtfsCounter, 1244 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:21,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1244 Valid, 2089 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:06:21,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2021-11-23 13:06:21,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1425. [2021-11-23 13:06:21,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 888 states have (on average 1.9414414414414414) internal successors, (1724), 1424 states have internal predecessors, (1724), 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) [2021-11-23 13:06:21,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1724 transitions. [2021-11-23 13:06:21,404 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1724 transitions. Word has length 13 [2021-11-23 13:06:21,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:21,405 INFO L470 AbstractCegarLoop]: Abstraction has 1425 states and 1724 transitions. [2021-11-23 13:06:21,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:21,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1724 transitions. [2021-11-23 13:06:21,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 13:06:21,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:21,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:21,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-23 13:06:21,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:21,622 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:06:21,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:21,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1494013586, now seen corresponding path program 1 times [2021-11-23 13:06:21,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:21,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602444840] [2021-11-23 13:06:21,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:21,623 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:21,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:21,625 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:21,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 13:06:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:21,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:06:21,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:21,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:21,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:21,835 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:21,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602444840] [2021-11-23 13:06:21,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602444840] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:21,835 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:21,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 13:06:21,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866248263] [2021-11-23 13:06:21,837 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:21,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:06:21,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:21,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:06:21,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:06:21,839 INFO L87 Difference]: Start difference. First operand 1425 states and 1724 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-23 13:06:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:21,932 INFO L93 Difference]: Finished difference Result 1653 states and 1942 transitions. [2021-11-23 13:06:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:06:21,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 15 [2021-11-23 13:06:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:21,941 INFO L225 Difference]: With dead ends: 1653 [2021-11-23 13:06:21,941 INFO L226 Difference]: Without dead ends: 1653 [2021-11-23 13:06:21,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:06:21,942 INFO L933 BasicCegarLoop]: 1182 mSDtfsCounter, 1176 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:21,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1176 Valid, 3219 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:06:21,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-11-23 13:06:21,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1395. [2021-11-23 13:06:21,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 872 states have (on average 1.9105504587155964) internal successors, (1666), 1394 states have internal predecessors, (1666), 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) [2021-11-23 13:06:21,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 1666 transitions. [2021-11-23 13:06:21,975 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 1666 transitions. Word has length 15 [2021-11-23 13:06:21,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:21,975 INFO L470 AbstractCegarLoop]: Abstraction has 1395 states and 1666 transitions. [2021-11-23 13:06:21,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-23 13:06:21,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 1666 transitions. [2021-11-23 13:06:21,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 13:06:21,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:21,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:21,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:22,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:22,189 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr642ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:06:22,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:22,190 INFO L85 PathProgramCache]: Analyzing trace with hash -272214225, now seen corresponding path program 1 times [2021-11-23 13:06:22,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:22,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229563111] [2021-11-23 13:06:22,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:22,191 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:22,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:22,192 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:22,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 13:06:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:22,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:06:22,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:22,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:06:22,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:06:22,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:06:22,436 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-23 13:06:22,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-23 13:06:22,514 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-23 13:06:22,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-23 13:06:22,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:22,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:22,622 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:22,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229563111] [2021-11-23 13:06:22,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229563111] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:22,623 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:22,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 13:06:22,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574760370] [2021-11-23 13:06:22,623 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:22,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:06:22,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:22,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:06:22,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:06:22,625 INFO L87 Difference]: Start difference. First operand 1395 states and 1666 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-23 13:06:24,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:24,680 INFO L93 Difference]: Finished difference Result 1864 states and 2200 transitions. [2021-11-23 13:06:24,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:06:24,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 16 [2021-11-23 13:06:24,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:24,689 INFO L225 Difference]: With dead ends: 1864 [2021-11-23 13:06:24,689 INFO L226 Difference]: Without dead ends: 1864 [2021-11-23 13:06:24,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:06:24,691 INFO L933 BasicCegarLoop]: 1149 mSDtfsCounter, 463 mSDsluCounter, 4364 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 5513 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:24,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 5513 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 13:06:24,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2021-11-23 13:06:24,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1394. [2021-11-23 13:06:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 871 states have (on average 1.9104477611940298) internal successors, (1664), 1393 states have internal predecessors, (1664), 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) [2021-11-23 13:06:24,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1664 transitions. [2021-11-23 13:06:24,722 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1664 transitions. Word has length 16 [2021-11-23 13:06:24,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:24,722 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 1664 transitions. [2021-11-23 13:06:24,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-23 13:06:24,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1664 transitions. [2021-11-23 13:06:24,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 13:06:24,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:24,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:24,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:24,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:24,938 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:06:24,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:24,939 INFO L85 PathProgramCache]: Analyzing trace with hash -520774338, now seen corresponding path program 1 times [2021-11-23 13:06:24,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:24,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118489956] [2021-11-23 13:06:24,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:24,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:24,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:24,940 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:24,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 13:06:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:25,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:06:25,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:25,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:25,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:25,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:25,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118489956] [2021-11-23 13:06:25,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118489956] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:25,180 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:25,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 13:06:25,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30516417] [2021-11-23 13:06:25,180 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:25,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:06:25,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:25,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:06:25,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:06:25,183 INFO L87 Difference]: Start difference. First operand 1394 states and 1664 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:25,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:25,217 INFO L93 Difference]: Finished difference Result 1334 states and 1578 transitions. [2021-11-23 13:06:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:06:25,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 13:06:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:25,224 INFO L225 Difference]: With dead ends: 1334 [2021-11-23 13:06:25,224 INFO L226 Difference]: Without dead ends: 1334 [2021-11-23 13:06:25,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:06:25,227 INFO L933 BasicCegarLoop]: 1148 mSDtfsCounter, 1143 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:25,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1143 Valid, 1176 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:06:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-11-23 13:06:25,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1334. [2021-11-23 13:06:25,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 835 states have (on average 1.889820359281437) internal successors, (1578), 1333 states have internal predecessors, (1578), 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) [2021-11-23 13:06:25,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1578 transitions. [2021-11-23 13:06:25,254 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1578 transitions. Word has length 18 [2021-11-23 13:06:25,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:25,254 INFO L470 AbstractCegarLoop]: Abstraction has 1334 states and 1578 transitions. [2021-11-23 13:06:25,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:25,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1578 transitions. [2021-11-23 13:06:25,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 13:06:25,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:25,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:25,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:25,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:25,468 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:06:25,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:25,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2047030904, now seen corresponding path program 1 times [2021-11-23 13:06:25,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:25,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271841047] [2021-11-23 13:06:25,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:25,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:25,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:25,470 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:25,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 13:06:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:25,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:06:25,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:25,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:25,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:25,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:25,713 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:25,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271841047] [2021-11-23 13:06:25,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271841047] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:25,713 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:25,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 13:06:25,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940812798] [2021-11-23 13:06:25,714 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:25,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:06:25,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:25,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:06:25,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:06:25,715 INFO L87 Difference]: Start difference. First operand 1334 states and 1578 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:25,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:25,795 INFO L93 Difference]: Finished difference Result 1306 states and 1522 transitions. [2021-11-23 13:06:25,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:06:25,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-23 13:06:25,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:25,802 INFO L225 Difference]: With dead ends: 1306 [2021-11-23 13:06:25,803 INFO L226 Difference]: Without dead ends: 1306 [2021-11-23 13:06:25,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:06:25,804 INFO L933 BasicCegarLoop]: 1103 mSDtfsCounter, 1114 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:25,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1114 Valid, 2227 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:06:25,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2021-11-23 13:06:25,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1304. [2021-11-23 13:06:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 819 states have (on average 1.855921855921856) internal successors, (1520), 1303 states have internal predecessors, (1520), 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) [2021-11-23 13:06:25,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1520 transitions. [2021-11-23 13:06:25,832 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1520 transitions. Word has length 20 [2021-11-23 13:06:25,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:25,833 INFO L470 AbstractCegarLoop]: Abstraction has 1304 states and 1520 transitions. [2021-11-23 13:06:25,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:25,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1520 transitions. [2021-11-23 13:06:25,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 13:06:25,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:25,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:25,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:26,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:26,047 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:06:26,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:26,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589690, now seen corresponding path program 1 times [2021-11-23 13:06:26,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:26,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712033433] [2021-11-23 13:06:26,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:26,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:26,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:26,048 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:26,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 13:06:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:26,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:06:26,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:26,219 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 [2021-11-23 13:06:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:26,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:26,430 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:26,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712033433] [2021-11-23 13:06:26,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712033433] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:26,431 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:26,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:06:26,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783706642] [2021-11-23 13:06:26,431 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:26,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:06:26,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:26,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:06:26,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:06:26,433 INFO L87 Difference]: Start difference. First operand 1304 states and 1520 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:28,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:28,997 INFO L93 Difference]: Finished difference Result 1920 states and 2264 transitions. [2021-11-23 13:06:28,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:06:28,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-23 13:06:28,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:29,006 INFO L225 Difference]: With dead ends: 1920 [2021-11-23 13:06:29,006 INFO L226 Difference]: Without dead ends: 1920 [2021-11-23 13:06:29,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:06:29,008 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 1863 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:29,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1863 Valid, 1276 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-23 13:06:29,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2021-11-23 13:06:29,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1300. [2021-11-23 13:06:29,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 819 states have (on average 1.8461538461538463) internal successors, (1512), 1299 states have internal predecessors, (1512), 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) [2021-11-23 13:06:29,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1512 transitions. [2021-11-23 13:06:29,044 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1512 transitions. Word has length 34 [2021-11-23 13:06:29,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:29,044 INFO L470 AbstractCegarLoop]: Abstraction has 1300 states and 1512 transitions. [2021-11-23 13:06:29,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:29,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1512 transitions. [2021-11-23 13:06:29,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 13:06:29,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:29,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:29,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:29,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:29,257 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:06:29,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:29,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589689, now seen corresponding path program 1 times [2021-11-23 13:06:29,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:29,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364141552] [2021-11-23 13:06:29,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:29,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:29,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:29,260 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:29,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 13:06:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:29,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:06:29,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:29,444 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 [2021-11-23 13:06:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:29,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:30,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:30,083 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:30,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364141552] [2021-11-23 13:06:30,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364141552] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:30,083 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:30,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 13:06:30,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328249080] [2021-11-23 13:06:30,084 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:30,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:06:30,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:30,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:06:30,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:06:30,085 INFO L87 Difference]: Start difference. First operand 1300 states and 1512 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:38,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:38,082 INFO L93 Difference]: Finished difference Result 2045 states and 2366 transitions. [2021-11-23 13:06:38,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:06:38,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-23 13:06:38,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:38,090 INFO L225 Difference]: With dead ends: 2045 [2021-11-23 13:06:38,090 INFO L226 Difference]: Without dead ends: 2045 [2021-11-23 13:06:38,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:06:38,091 INFO L933 BasicCegarLoop]: 1428 mSDtfsCounter, 2133 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2133 SdHoareTripleChecker+Valid, 3173 SdHoareTripleChecker+Invalid, 2070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:38,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2133 Valid, 3173 Invalid, 2070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2060 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2021-11-23 13:06:38,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2021-11-23 13:06:38,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1296. [2021-11-23 13:06:38,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 819 states have (on average 1.8363858363858363) internal successors, (1504), 1295 states have internal predecessors, (1504), 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) [2021-11-23 13:06:38,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1504 transitions. [2021-11-23 13:06:38,114 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1504 transitions. Word has length 34 [2021-11-23 13:06:38,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:38,115 INFO L470 AbstractCegarLoop]: Abstraction has 1296 states and 1504 transitions. [2021-11-23 13:06:38,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:38,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1504 transitions. [2021-11-23 13:06:38,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 13:06:38,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:38,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:38,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:38,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:38,328 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:06:38,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:38,329 INFO L85 PathProgramCache]: Analyzing trace with hash -489765179, now seen corresponding path program 1 times [2021-11-23 13:06:38,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:38,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499910708] [2021-11-23 13:06:38,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:38,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:38,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:38,332 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:38,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 13:06:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:38,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:06:38,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:38,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:38,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:38,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:38,755 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:38,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499910708] [2021-11-23 13:06:38,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499910708] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:38,755 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:38,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:06:38,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974080635] [2021-11-23 13:06:38,756 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:38,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:06:38,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:38,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:06:38,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:06:38,757 INFO L87 Difference]: Start difference. First operand 1296 states and 1504 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:38,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:38,813 INFO L93 Difference]: Finished difference Result 1284 states and 1484 transitions. [2021-11-23 13:06:38,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:06:38,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-23 13:06:38,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:38,820 INFO L225 Difference]: With dead ends: 1284 [2021-11-23 13:06:38,820 INFO L226 Difference]: Without dead ends: 1284 [2021-11-23 13:06:38,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:06:38,822 INFO L933 BasicCegarLoop]: 1097 mSDtfsCounter, 1090 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:38,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1090 Valid, 2191 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:06:38,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2021-11-23 13:06:38,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1284. [2021-11-23 13:06:38,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 807 states have (on average 1.838909541511772) internal successors, (1484), 1283 states have internal predecessors, (1484), 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) [2021-11-23 13:06:38,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1484 transitions. [2021-11-23 13:06:38,847 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1484 transitions. Word has length 52 [2021-11-23 13:06:38,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:38,847 INFO L470 AbstractCegarLoop]: Abstraction has 1284 states and 1484 transitions. [2021-11-23 13:06:38,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:38,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1484 transitions. [2021-11-23 13:06:38,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 13:06:38,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:38,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:38,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:39,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:39,066 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:06:39,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:39,066 INFO L85 PathProgramCache]: Analyzing trace with hash -531678063, now seen corresponding path program 1 times [2021-11-23 13:06:39,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:39,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983530580] [2021-11-23 13:06:39,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:39,068 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:39,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:39,069 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:39,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 13:06:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:39,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:06:39,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:39,391 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 [2021-11-23 13:06:39,398 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 [2021-11-23 13:06:40,058 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 13:06:40,058 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 26 treesize of output 28 [2021-11-23 13:06:40,080 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 13:06:40,080 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 25 treesize of output 21 [2021-11-23 13:06:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:40,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:44,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:44,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:44,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983530580] [2021-11-23 13:06:44,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983530580] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:44,896 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:44,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 13:06:44,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6992962] [2021-11-23 13:06:44,896 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:44,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:06:44,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:44,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:06:44,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 13:06:44,898 INFO L87 Difference]: Start difference. First operand 1284 states and 1484 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:48,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:48,770 INFO L93 Difference]: Finished difference Result 1674 states and 1957 transitions. [2021-11-23 13:06:48,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:06:48,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-23 13:06:48,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:48,776 INFO L225 Difference]: With dead ends: 1674 [2021-11-23 13:06:48,777 INFO L226 Difference]: Without dead ends: 1674 [2021-11-23 13:06:48,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-23 13:06:48,777 INFO L933 BasicCegarLoop]: 833 mSDtfsCounter, 1619 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 2281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1463 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:48,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1619 Valid, 1970 Invalid, 2281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 780 Invalid, 0 Unknown, 1463 Unchecked, 3.8s Time] [2021-11-23 13:06:48,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2021-11-23 13:06:48,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1254. [2021-11-23 13:06:48,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 809 states have (on average 1.7972805933250926) internal successors, (1454), 1253 states have internal predecessors, (1454), 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) [2021-11-23 13:06:48,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1454 transitions. [2021-11-23 13:06:48,797 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1454 transitions. Word has length 60 [2021-11-23 13:06:48,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:48,798 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 1454 transitions. [2021-11-23 13:06:48,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:48,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1454 transitions. [2021-11-23 13:06:48,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 13:06:48,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:48,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:48,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-23 13:06:49,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:49,013 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:06:49,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:49,014 INFO L85 PathProgramCache]: Analyzing trace with hash 158497042, now seen corresponding path program 1 times [2021-11-23 13:06:49,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:49,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637180770] [2021-11-23 13:06:49,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:49,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:49,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:49,016 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:49,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 13:06:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:49,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:06:49,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:49,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:49,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-23 13:06:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:49,768 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:49,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637180770] [2021-11-23 13:06:49,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637180770] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:49,769 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:49,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 13:06:49,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813923103] [2021-11-23 13:06:49,769 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:49,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:06:49,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:49,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:06:49,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:06:49,770 INFO L87 Difference]: Start difference. First operand 1254 states and 1454 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:51,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:51,412 INFO L93 Difference]: Finished difference Result 1252 states and 1452 transitions. [2021-11-23 13:06:51,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:06:51,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-23 13:06:51,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:51,419 INFO L225 Difference]: With dead ends: 1252 [2021-11-23 13:06:51,419 INFO L226 Difference]: Without dead ends: 1252 [2021-11-23 13:06:51,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:06:51,420 INFO L933 BasicCegarLoop]: 691 mSDtfsCounter, 3080 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3080 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:51,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3080 Valid, 934 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-23 13:06:51,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-11-23 13:06:51,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1252. [2021-11-23 13:06:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 809 states have (on average 1.7948084054388134) internal successors, (1452), 1251 states have internal predecessors, (1452), 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) [2021-11-23 13:06:51,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1452 transitions. [2021-11-23 13:06:51,440 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1452 transitions. Word has length 62 [2021-11-23 13:06:51,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:51,440 INFO L470 AbstractCegarLoop]: Abstraction has 1252 states and 1452 transitions. [2021-11-23 13:06:51,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:51,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1452 transitions. [2021-11-23 13:06:51,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 13:06:51,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:51,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:51,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:51,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:51,656 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:06:51,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:51,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1426362414, now seen corresponding path program 1 times [2021-11-23 13:06:51,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:51,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729737670] [2021-11-23 13:06:51,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:51,657 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:51,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:51,659 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:51,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 13:06:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:51,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:06:51,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:51,950 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 [2021-11-23 13:06:51,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-23 13:06:52,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 13:06:52,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:52,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:52,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:52,194 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:52,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729737670] [2021-11-23 13:06:52,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729737670] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:52,194 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:52,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-23 13:06:52,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321883932] [2021-11-23 13:06:52,195 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:52,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:06:52,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:52,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:06:52,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:06:52,196 INFO L87 Difference]: Start difference. First operand 1252 states and 1452 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:58,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:58,326 INFO L93 Difference]: Finished difference Result 2066 states and 2403 transitions. [2021-11-23 13:06:58,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:06:58,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-23 13:06:58,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:58,335 INFO L225 Difference]: With dead ends: 2066 [2021-11-23 13:06:58,336 INFO L226 Difference]: Without dead ends: 2066 [2021-11-23 13:06:58,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-23 13:06:58,337 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 981 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 2472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:58,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [981 Valid, 2943 Invalid, 2472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-11-23 13:06:58,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2021-11-23 13:06:58,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1251. [2021-11-23 13:06:58,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 809 states have (on average 1.7935723114956736) internal successors, (1451), 1250 states have internal predecessors, (1451), 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) [2021-11-23 13:06:58,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1451 transitions. [2021-11-23 13:06:58,372 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1451 transitions. Word has length 66 [2021-11-23 13:06:58,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:58,373 INFO L470 AbstractCegarLoop]: Abstraction has 1251 states and 1451 transitions. [2021-11-23 13:06:58,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:58,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1451 transitions. [2021-11-23 13:06:58,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 13:06:58,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:58,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:58,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:58,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:06:58,588 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:06:58,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:58,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1267561538, now seen corresponding path program 1 times [2021-11-23 13:06:58,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:06:58,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149388713] [2021-11-23 13:06:58,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:58,589 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:06:58,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:06:58,590 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:06:58,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 13:06:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:58,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 13:06:58,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:58,900 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 [2021-11-23 13:06:58,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-23 13:06:58,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 13:06:58,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-23 13:06:59,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-23 13:06:59,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:59,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:59,536 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:06:59,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149388713] [2021-11-23 13:06:59,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149388713] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:59,536 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:59,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-23 13:06:59,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426102816] [2021-11-23 13:06:59,536 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:59,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:06:59,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:06:59,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:06:59,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:06:59,538 INFO L87 Difference]: Start difference. First operand 1251 states and 1451 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:17,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:17,304 INFO L93 Difference]: Finished difference Result 1986 states and 2300 transitions. [2021-11-23 13:07:17,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:07:17,305 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-23 13:07:17,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:17,312 INFO L225 Difference]: With dead ends: 1986 [2021-11-23 13:07:17,312 INFO L226 Difference]: Without dead ends: 1986 [2021-11-23 13:07:17,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:07:17,313 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 980 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 3180 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 3837 SdHoareTripleChecker+Invalid, 3194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:17,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 3837 Invalid, 3194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3180 Invalid, 0 Unknown, 0 Unchecked, 17.5s Time] [2021-11-23 13:07:17,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2021-11-23 13:07:17,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1250. [2021-11-23 13:07:17,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 809 states have (on average 1.792336217552534) internal successors, (1450), 1249 states have internal predecessors, (1450), 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) [2021-11-23 13:07:17,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1450 transitions. [2021-11-23 13:07:17,337 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1450 transitions. Word has length 67 [2021-11-23 13:07:17,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:17,337 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1450 transitions. [2021-11-23 13:07:17,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:17,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1450 transitions. [2021-11-23 13:07:17,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 13:07:17,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:17,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:17,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-23 13:07:17,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:07:17,558 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:07:17,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:17,559 INFO L85 PathProgramCache]: Analyzing trace with hash -582276570, now seen corresponding path program 1 times [2021-11-23 13:07:17,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:07:17,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288040058] [2021-11-23 13:07:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:17,560 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:07:17,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:07:17,560 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:07:17,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 13:07:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:17,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:07:17,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:17,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:18,067 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:07:18,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288040058] [2021-11-23 13:07:18,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288040058] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:18,067 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:18,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 13:07:18,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834662185] [2021-11-23 13:07:18,067 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:18,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:07:18,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:07:18,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:07:18,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:07:18,069 INFO L87 Difference]: Start difference. First operand 1250 states and 1450 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:18,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:18,231 INFO L93 Difference]: Finished difference Result 2345 states and 2705 transitions. [2021-11-23 13:07:18,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:07:18,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-23 13:07:18,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:18,240 INFO L225 Difference]: With dead ends: 2345 [2021-11-23 13:07:18,240 INFO L226 Difference]: Without dead ends: 2345 [2021-11-23 13:07:18,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:07:18,241 INFO L933 BasicCegarLoop]: 1320 mSDtfsCounter, 1096 mSDsluCounter, 4360 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 5680 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:18,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1096 Valid, 5680 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:07:18,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2021-11-23 13:07:18,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 1253. [2021-11-23 13:07:18,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 812 states have (on average 1.7894088669950738) internal successors, (1453), 1252 states have internal predecessors, (1453), 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) [2021-11-23 13:07:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1453 transitions. [2021-11-23 13:07:18,272 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1453 transitions. Word has length 71 [2021-11-23 13:07:18,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:18,272 INFO L470 AbstractCegarLoop]: Abstraction has 1253 states and 1453 transitions. [2021-11-23 13:07:18,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:18,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1453 transitions. [2021-11-23 13:07:18,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 13:07:18,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:18,274 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:18,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-23 13:07:18,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:07:18,505 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:07:18,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:18,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1283072730, now seen corresponding path program 1 times [2021-11-23 13:07:18,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:07:18,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265706139] [2021-11-23 13:07:18,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:18,506 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:07:18,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:07:18,507 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:07:18,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 13:07:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:18,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:07:18,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:18,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:18,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:19,057 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:07:19,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265706139] [2021-11-23 13:07:19,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265706139] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:07:19,058 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:07:19,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-23 13:07:19,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827030485] [2021-11-23 13:07:19,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:07:19,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:07:19,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:07:19,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:07:19,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:07:19,059 INFO L87 Difference]: Start difference. First operand 1253 states and 1453 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2021-11-23 13:07:19,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:19,608 INFO L93 Difference]: Finished difference Result 2152 states and 2502 transitions. [2021-11-23 13:07:19,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 13:07:19,609 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-23 13:07:19,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:19,615 INFO L225 Difference]: With dead ends: 2152 [2021-11-23 13:07:19,615 INFO L226 Difference]: Without dead ends: 2152 [2021-11-23 13:07:19,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:07:19,617 INFO L933 BasicCegarLoop]: 1119 mSDtfsCounter, 850 mSDsluCounter, 5402 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 6521 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:19,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 6521 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:07:19,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2021-11-23 13:07:19,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1259. [2021-11-23 13:07:19,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 818 states have (on average 1.7836185819070904) internal successors, (1459), 1258 states have internal predecessors, (1459), 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) [2021-11-23 13:07:19,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1459 transitions. [2021-11-23 13:07:19,643 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1459 transitions. Word has length 73 [2021-11-23 13:07:19,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:19,643 INFO L470 AbstractCegarLoop]: Abstraction has 1259 states and 1459 transitions. [2021-11-23 13:07:19,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2021-11-23 13:07:19,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1459 transitions. [2021-11-23 13:07:19,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 13:07:19,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:19,645 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:19,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 13:07:19,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:07:19,851 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:07:19,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:19,852 INFO L85 PathProgramCache]: Analyzing trace with hash -376896730, now seen corresponding path program 2 times [2021-11-23 13:07:19,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:07:19,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145250514] [2021-11-23 13:07:19,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 13:07:19,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:07:19,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:07:19,853 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:07:19,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 13:07:20,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 13:07:20,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:07:20,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:07:20,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:20,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:21,120 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:21,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:07:21,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145250514] [2021-11-23 13:07:21,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145250514] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:07:21,121 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:07:21,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-23 13:07:21,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458904966] [2021-11-23 13:07:21,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:07:21,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 13:07:21,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:07:21,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 13:07:21,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-23 13:07:21,123 INFO L87 Difference]: Start difference. First operand 1259 states and 1459 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2021-11-23 13:07:23,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:23,773 INFO L93 Difference]: Finished difference Result 2164 states and 2514 transitions. [2021-11-23 13:07:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 13:07:23,774 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-23 13:07:23,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:23,778 INFO L225 Difference]: With dead ends: 2164 [2021-11-23 13:07:23,778 INFO L226 Difference]: Without dead ends: 2164 [2021-11-23 13:07:23,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=370, Invalid=622, Unknown=0, NotChecked=0, Total=992 [2021-11-23 13:07:23,779 INFO L933 BasicCegarLoop]: 1119 mSDtfsCounter, 850 mSDsluCounter, 13179 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 14298 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:23,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 14298 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 13:07:23,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2021-11-23 13:07:23,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 1271. [2021-11-23 13:07:23,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 830 states have (on average 1.772289156626506) internal successors, (1471), 1270 states have internal predecessors, (1471), 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) [2021-11-23 13:07:23,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1471 transitions. [2021-11-23 13:07:23,809 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1471 transitions. Word has length 77 [2021-11-23 13:07:23,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:23,810 INFO L470 AbstractCegarLoop]: Abstraction has 1271 states and 1471 transitions. [2021-11-23 13:07:23,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2021-11-23 13:07:23,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1471 transitions. [2021-11-23 13:07:23,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 13:07:23,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:23,811 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:23,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-23 13:07:24,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:07:24,032 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:07:24,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:24,032 INFO L85 PathProgramCache]: Analyzing trace with hash 688279334, now seen corresponding path program 3 times [2021-11-23 13:07:24,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:07:24,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378253765] [2021-11-23 13:07:24,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 13:07:24,033 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:07:24,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:07:24,034 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:07:24,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 13:07:24,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-23 13:07:24,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:07:24,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 13:07:24,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:25,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:27,011 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:07:27,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378253765] [2021-11-23 13:07:27,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378253765] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:07:27,011 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:07:27,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-23 13:07:27,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655868268] [2021-11-23 13:07:27,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:07:27,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-23 13:07:27,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:07:27,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-23 13:07:27,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 13:07:27,013 INFO L87 Difference]: Start difference. First operand 1271 states and 1471 transitions. Second operand has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 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) [2021-11-23 13:07:41,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:41,220 INFO L93 Difference]: Finished difference Result 15790 states and 18306 transitions. [2021-11-23 13:07:41,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-23 13:07:41,224 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 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 85 [2021-11-23 13:07:41,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:41,261 INFO L225 Difference]: With dead ends: 15790 [2021-11-23 13:07:41,261 INFO L226 Difference]: Without dead ends: 15790 [2021-11-23 13:07:41,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1674, Invalid=4332, Unknown=0, NotChecked=0, Total=6006 [2021-11-23 13:07:41,265 INFO L933 BasicCegarLoop]: 13109 mSDtfsCounter, 30471 mSDsluCounter, 185992 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30471 SdHoareTripleChecker+Valid, 199101 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:41,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30471 Valid, 199101 Invalid, 1735 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [164 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2021-11-23 13:07:41,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15790 states. [2021-11-23 13:07:41,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15790 to 1310. [2021-11-23 13:07:41,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 869 states have (on average 1.761795166858458) internal successors, (1531), 1309 states have internal predecessors, (1531), 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) [2021-11-23 13:07:41,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1531 transitions. [2021-11-23 13:07:41,380 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1531 transitions. Word has length 85 [2021-11-23 13:07:41,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:41,380 INFO L470 AbstractCegarLoop]: Abstraction has 1310 states and 1531 transitions. [2021-11-23 13:07:41,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 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) [2021-11-23 13:07:41,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1531 transitions. [2021-11-23 13:07:41,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-23 13:07:41,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:41,382 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:41,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-23 13:07:41,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:07:41,599 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:07:41,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:41,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2300122, now seen corresponding path program 4 times [2021-11-23 13:07:41,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:07:41,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628852433] [2021-11-23 13:07:41,600 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 13:07:41,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:07:41,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:07:41,601 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:07:41,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-23 13:07:41,882 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 13:07:41,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:07:41,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-23 13:07:41,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:43,473 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:43,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:46,364 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:07:46,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628852433] [2021-11-23 13:07:46,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628852433] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:07:46,365 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:07:46,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-23 13:07:46,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763206757] [2021-11-23 13:07:46,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:07:46,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-23 13:07:46,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:07:46,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-23 13:07:46,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-23 13:07:46,369 INFO L87 Difference]: Start difference. First operand 1310 states and 1531 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 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) [2021-11-23 13:09:10,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:10,853 INFO L93 Difference]: Finished difference Result 2233 states and 2597 transitions. [2021-11-23 13:09:10,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-23 13:09:10,856 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 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 101 [2021-11-23 13:09:10,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:10,860 INFO L225 Difference]: With dead ends: 2233 [2021-11-23 13:09:10,860 INFO L226 Difference]: Without dead ends: 2233 [2021-11-23 13:09:10,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3304 ImplicationChecksByTransitivity, 29.2s TimeCoverageRelationStatistics Valid=3577, Invalid=8413, Unknown=0, NotChecked=0, Total=11990 [2021-11-23 13:09:10,865 INFO L933 BasicCegarLoop]: 1119 mSDtfsCounter, 894 mSDsluCounter, 36243 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 682 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 37362 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 682 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:10,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 37362 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [682 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 59.0s Time] [2021-11-23 13:09:10,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2021-11-23 13:09:10,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 1340. [2021-11-23 13:09:10,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 899 states have (on average 1.728587319243604) internal successors, (1554), 1339 states have internal predecessors, (1554), 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) [2021-11-23 13:09:10,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1554 transitions. [2021-11-23 13:09:10,887 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1554 transitions. Word has length 101 [2021-11-23 13:09:10,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:10,888 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 1554 transitions. [2021-11-23 13:09:10,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 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) [2021-11-23 13:09:10,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1554 transitions. [2021-11-23 13:09:10,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 13:09:10,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:10,890 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:09:10,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-23 13:09:11,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:09:11,105 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:09:11,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:11,105 INFO L85 PathProgramCache]: Analyzing trace with hash -146191322, now seen corresponding path program 5 times [2021-11-23 13:09:11,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:09:11,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736593244] [2021-11-23 13:09:11,106 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 13:09:11,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:09:11,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:09:11,108 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:09:11,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-23 13:09:12,122 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-23 13:09:12,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:09:12,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 99 conjunts are in the unsatisfiable core [2021-11-23 13:09:12,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:12,165 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 [2021-11-23 13:09:12,359 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 [2021-11-23 13:09:12,387 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:09:12,388 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 13 treesize of output 13 [2021-11-23 13:09:12,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-23 13:09:12,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 13:09:12,693 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-23 13:09:12,694 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 68 treesize of output 67 [2021-11-23 13:09:12,716 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-23 13:09:12,716 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 64 treesize of output 51 [2021-11-23 13:09:12,873 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:12,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:14,416 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:14,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:14,535 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:14,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:14,579 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:14,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:17,524 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:17,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:18,601 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:18,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:18,741 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:18,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:20,543 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:20,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:20,693 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:20,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:20,738 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:20,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:20,908 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:20,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:21,814 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:21,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:23,576 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:23,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:27,634 INFO L354 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-11-23 13:09:27,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 69 [2021-11-23 13:09:29,334 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:29,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:29,366 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:29,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:30,853 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:30,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:31,498 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:31,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:34,332 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:34,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:34,362 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:34,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:35,149 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:35,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:35,701 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:35,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:36,413 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:36,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:36,454 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:36,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:37,028 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:37,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:37,059 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:37,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:38,149 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:38,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:38,181 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:38,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:38,308 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:38,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:39,888 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:39,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:41,916 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:41,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:45,106 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:45,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:46,324 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:46,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:46,355 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:46,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:50,015 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:50,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:53,598 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:53,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:53,716 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:53,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:55,571 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:55,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:55,686 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:55,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:56,571 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:56,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:56,706 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:56,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:56,739 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:56,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:56,867 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:56,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:57,978 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:57,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:58,113 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:58,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:58,154 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:58,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:09:59,866 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:09:59,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:09:59,898 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:09:59,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:00,026 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:10:00,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:10:01,624 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:10:01,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:01,740 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:10:01,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:10:01,770 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:10:01,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:01,917 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:10:01,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:10:01,959 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:10:01,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:03,856 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:10:03,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:10:05,594 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:10:05,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:05,705 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:10:05,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:10:10,213 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:10:10,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:10,345 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:10:10,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:10:10,378 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:10:10,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:13,874 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:10:13,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:10:16,039 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:10:16,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:17,467 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:10:17,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:10:17,516 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:10:17,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:19,427 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:10:19,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:10:19,460 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:10:19,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:21,908 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:10:21,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:10:23,695 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:10:23,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:23,807 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:10:23,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:10:26,375 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:10:26,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:27,648 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:10:27,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:10:27,694 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:10:27,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:29,817 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:10:29,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:10:30,816 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:10:30,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:30,952 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:10:30,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:10:33,921 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:10:33,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:34,053 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:10:34,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:10:35,528 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:10:35,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:39,028 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:10:39,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:10:39,059 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:10:39,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:39,193 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:10:39,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:10:39,225 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:10:39,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:39,369 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-23 13:10:39,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-23 13:10:39,401 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:10:39,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-23 13:10:40,918 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 13:10:40,919 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 115 treesize of output 78 [2021-11-23 13:10:40,976 INFO L354 Elim1Store]: treesize reduction 104, result has 19.4 percent of original size [2021-11-23 13:10:40,977 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 101 [2021-11-23 13:10:41,352 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-23 13:10:41,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 62 [2021-11-23 13:10:41,362 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-23 13:10:41,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 50 treesize of output 26 [2021-11-23 13:10:41,399 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 43 proven. 44 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2021-11-23 13:10:41,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:11:12,503 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_13 (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse2 (bvadd v_subst_13 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse0 .cse1) .cse2 .cse1))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))) (forall ((v_subst_14 (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse5) (bvadd v_subst_14 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse5))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse4) (bvadd .cse4 (_ bv20 32)))))) is different from false [2021-11-23 13:11:14,645 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_subst_14 (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_16 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse1) (bvadd v_subst_16 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse1) (bvadd v_subst_14 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse1))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_subst_15 (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_13 (_ BitVec 32))) (let ((.cse2 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse4 (bvadd v_subst_15 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse5 (bvadd v_subst_13 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse6 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse6) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse6)))))) is different from false [2021-11-23 13:12:37,101 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_45 (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse2 (bvadd v_subst_45 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse0 .cse1) .cse2 .cse1))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_46 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse5) (bvadd v_subst_46 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse5))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse4) (bvadd .cse4 (_ bv20 32)))))) is different from false [2021-11-23 13:13:31,752 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_68 (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse2 (bvadd v_subst_68 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse0 .cse1) .cse2 .cse1))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_67 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse5) (bvadd v_subst_67 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse5))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse4) (bvadd .cse4 (_ bv20 32)))))) is different from false [2021-11-23 13:13:53,875 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_subst_75 (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse2 (bvadd v_subst_75 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse0 .cse1) .cse2 .cse1))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))) (forall ((v_subst_76 (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse5) (bvadd v_subst_76 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse5))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse4) (bvadd .cse4 (_ bv20 32)))))) is different from false [2021-11-23 13:18:58,410 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 26 treesize of output 24 [2021-11-23 13:18:58,671 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 159 proven. 39 refuted. 119 times theorem prover too weak. 463 trivial. 210 not checked. [2021-11-23 13:18:58,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:18:58,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736593244] [2021-11-23 13:18:58,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736593244] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:18:58,672 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:18:58,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15] total 22 [2021-11-23 13:18:58,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904684831] [2021-11-23 13:18:58,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:18:58,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-23 13:18:58,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:18:58,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-23 13:18:58,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=237, Unknown=13, NotChecked=180, Total=506 [2021-11-23 13:18:58,675 INFO L87 Difference]: Start difference. First operand 1340 states and 1554 transitions. Second operand has 23 states, 22 states have (on average 4.636363636363637) internal successors, (102), 23 states have internal predecessors, (102), 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) [2021-11-23 13:19:03,667 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse12 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_68 (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse2 (bvadd v_subst_68 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse0 .cse1) .cse2 .cse1))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_45 (_ BitVec 32))) (let ((.cse4 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse6 (bvadd v_subst_45 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse7 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse4 .cse5) .cse6 .cse5))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse7)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse4 (_ bv0 32)) .cse6 (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse7))))) (forall ((v_subst_75 (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32))) (let ((.cse8 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse10 (bvadd v_subst_75 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse11 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse8 .cse9) .cse10 .cse9))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse11) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse8 (_ bv0 32)) .cse10 (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse11))))) (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse12)) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ULTIMATE.start_main_~user~0#1.base|))) (forall ((v_subst_76 (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32))) (let ((.cse13 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse14 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse14) (bvadd v_subst_76 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse14))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse13) (bvadd .cse13 (_ bv20 32))))) (= (select |c_#length| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (_ bv44 32)) (not (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| |c_ULTIMATE.start_main_~user~0#1.base|)) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_46 (_ BitVec 32))) (let ((.cse15 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse16 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse16) (bvadd v_subst_46 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse16))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse15) (bvadd .cse15 (_ bv20 32))))) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~user~0#1.base|) .cse12) (_ bv0 32)) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_67 (_ BitVec 32))) (let ((.cse17 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse18 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse18) (bvadd v_subst_67 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse18))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse17) (bvadd .cse17 (_ bv20 32))))) (forall ((v_subst_14 (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_16 (_ BitVec 32))) (let ((.cse19 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse20 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse20) (bvadd v_subst_16 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse20) (bvadd v_subst_14 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse20))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse19) (bvadd (_ bv20 32) .cse19)))) (exists ((|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1_125| (_ BitVec 32))) (let ((.cse21 (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1_125| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|))) (and (= (_ bv0 32) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse21)) (= ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse21))))) (forall ((v_subst_15 (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_13 (_ BitVec 32))) (let ((.cse22 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse24 (bvadd v_subst_15 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse25 (bvadd v_subst_13 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse26 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse23 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse22 .cse23) .cse24 .cse23) .cse25 .cse23))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse26) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse22 (_ bv0 32)) .cse24 (_ bv0 32)) .cse25 (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse26))))))) is different from true [2021-11-23 13:19:05,692 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse16 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_68 (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse2 (bvadd v_subst_68 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse0 .cse1) .cse2 .cse1))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_13 (_ BitVec 32))) (let ((.cse4 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse6 (bvadd v_subst_13 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse7 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse4 .cse5) .cse6 .cse5))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse7)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse4 (_ bv0 32)) .cse6 (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse7))))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_45 (_ BitVec 32))) (let ((.cse8 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse10 (bvadd v_subst_45 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse11 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse8 .cse9) .cse10 .cse9))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse11)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse8 (_ bv0 32)) .cse10 (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse11))))) (forall ((v_subst_75 (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32))) (let ((.cse12 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse14 (bvadd v_subst_75 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse15 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse12 .cse13) .cse14 .cse13))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse15) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse15))))) (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse16)) (forall ((v_subst_76 (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32))) (let ((.cse17 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse18 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse18) (bvadd v_subst_76 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse18))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse17) (bvadd .cse17 (_ bv20 32))))) (= (select |c_#length| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (_ bv44 32)) (not (= |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| |c_ULTIMATE.start_main_~user~0#1.base|)) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_46 (_ BitVec 32))) (let ((.cse19 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse20 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse20) (bvadd v_subst_46 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse20))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse19) (bvadd .cse19 (_ bv20 32))))) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~user~0#1.base|) .cse16) (_ bv0 32)) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_67 (_ BitVec 32))) (let ((.cse21 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse22 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse22) (bvadd v_subst_67 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse22))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse21) (bvadd .cse21 (_ bv20 32))))) (forall ((v_subst_14 (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_16 (_ BitVec 32))) (let ((.cse23 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse24 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse24) (bvadd v_subst_16 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse24) (bvadd v_subst_14 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse24))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse23) (bvadd (_ bv20 32) .cse23)))) (exists ((|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1_125| (_ BitVec 32))) (let ((.cse25 (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1_125| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|))) (and (= (_ bv0 32) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse25)) (= ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse25))))) (forall ((v_subst_14 (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32))) (let ((.cse26 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse27 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse27) (bvadd v_subst_14 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) .cse27))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (bvule (bvadd (_ bv16 32) .cse26) (bvadd .cse26 (_ bv20 32))))) (forall ((v_subst_15 (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| (_ BitVec 32)) (v_subst_13 (_ BitVec 32))) (let ((.cse28 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr279#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse30 (bvadd v_subst_15 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse31 (bvadd v_subst_13 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|)) (.cse32 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (let ((.cse29 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value#1|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse28 .cse29) .cse30 .cse29) .cse31 .cse29))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse32) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) .cse28 (_ bv0 32)) .cse30 (_ bv0 32)) .cse31 (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse32))))))) is different from true [2021-11-23 13:19:17,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:19:17,897 INFO L93 Difference]: Finished difference Result 1726 states and 2056 transitions. [2021-11-23 13:19:17,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:19:17,898 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.636363636363637) internal successors, (102), 23 states have internal predecessors, (102), 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 115 [2021-11-23 13:19:17,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:19:17,903 INFO L225 Difference]: With dead ends: 1726 [2021-11-23 13:19:17,904 INFO L226 Difference]: Without dead ends: 1726 [2021-11-23 13:19:17,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 130 SyntacticMatches, 78 SemanticMatches, 28 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 234.9s TimeCoverageRelationStatistics Valid=124, Invalid=395, Unknown=15, NotChecked=336, Total=870 [2021-11-23 13:19:17,905 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 778 mSDsluCounter, 3565 mSDsCounter, 0 mSdLazyCounter, 2621 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 4248 SdHoareTripleChecker+Invalid, 8878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6246 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:19:17,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [778 Valid, 4248 Invalid, 8878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2621 Invalid, 0 Unknown, 6246 Unchecked, 12.7s Time] [2021-11-23 13:19:17,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2021-11-23 13:19:17,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1339. [2021-11-23 13:19:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 899 states have (on average 1.7274749721913236) internal successors, (1553), 1338 states have internal predecessors, (1553), 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) [2021-11-23 13:19:17,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1553 transitions. [2021-11-23 13:19:17,953 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1553 transitions. Word has length 115 [2021-11-23 13:19:17,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:19:17,953 INFO L470 AbstractCegarLoop]: Abstraction has 1339 states and 1553 transitions. [2021-11-23 13:19:17,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.636363636363637) internal successors, (102), 23 states have internal predecessors, (102), 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) [2021-11-23 13:19:17,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1553 transitions. [2021-11-23 13:19:17,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 13:19:17,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:19:17,956 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:19:17,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-23 13:19:18,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:19:18,176 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 639 more)] === [2021-11-23 13:19:18,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:19:18,177 INFO L85 PathProgramCache]: Analyzing trace with hash -146191323, now seen corresponding path program 1 times [2021-11-23 13:19:18,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:19:18,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657442806] [2021-11-23 13:19:18,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:19:18,178 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:19:18,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:19:18,179 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:19:18,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d035b3d-eb20-4954-b288-80cc268b2b2a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-23 13:19:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:19:18,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-23 13:19:18,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:19:18,841 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 [2021-11-23 13:19:19,110 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 13:19:19,111 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 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-23 13:19:19,166 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 26 treesize of output 22 [2021-11-23 13:19:19,521 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-23 13:19:19,522 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 48 treesize of output 35 [2021-11-23 13:19:19,685 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 13:19:19,686 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 50