./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa --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 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:01:39,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:01:39,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:01:39,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:01:39,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:01:39,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:01:39,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:01:39,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:01:39,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:01:39,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:01:39,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:01:39,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:01:39,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:01:39,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:01:39,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:01:39,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:01:39,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:01:39,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:01:39,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:01:39,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:01:39,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:01:39,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:01:39,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:01:39,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:01:39,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:01:39,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:01:39,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:01:39,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:01:39,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:01:39,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:01:39,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:01:39,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:01:39,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:01:39,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:01:39,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:01:39,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:01:39,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:01:39,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:01:39,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:01:39,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:01:39,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:01:39,584 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-12-06 21:01:39,606 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:01:39,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:01:39,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:01:39,607 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:01:39,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:01:39,607 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:01:39,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:01:39,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:01:39,608 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:01:39,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:01:39,609 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 21:01:39,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:01:39,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:01:39,609 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 21:01:39,610 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 21:01:39,610 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 21:01:39,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:01:39,610 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 21:01:39,610 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:01:39,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:01:39,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:01:39,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:01:39,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:01:39,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:01:39,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:01:39,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 21:01:39,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 21:01:39,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:01:39,612 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_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2021-12-06 21:01:39,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:01:39,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:01:39,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:01:39,813 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:01:39,814 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:01:39,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-12-06 21:01:39,857 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/data/cfaca10ed/abdea597d42f4648b0011171b3e552c8/FLAG00aa421ae [2021-12-06 21:01:40,341 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:01:40,342 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-12-06 21:01:40,359 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/data/cfaca10ed/abdea597d42f4648b0011171b3e552c8/FLAG00aa421ae [2021-12-06 21:01:40,370 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/data/cfaca10ed/abdea597d42f4648b0011171b3e552c8 [2021-12-06 21:01:40,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:01:40,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:01:40,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:01:40,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:01:40,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:01:40,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:01:40" (1/1) ... [2021-12-06 21:01:40,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e8ecfdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:40, skipping insertion in model container [2021-12-06 21:01:40,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:01:40" (1/1) ... [2021-12-06 21:01:40,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:01:40,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:01:40,796 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_04386b7a-dc44-464d-9023-94bc60b5acd3/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-12-06 21:01:40,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:01:40,839 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) [2021-12-06 21:01:40,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@32e49a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:40, skipping insertion in model container [2021-12-06 21:01:40,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:01:40,840 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-06 21:01:40,841 INFO L158 Benchmark]: Toolchain (without parser) took 468.31ms. Allocated memory is still 113.2MB. Free memory was 71.8MB in the beginning and 78.4MB in the end (delta: -6.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 21:01:40,842 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 91.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 21:01:40,842 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.35ms. Allocated memory is still 113.2MB. Free memory was 71.7MB in the beginning and 78.4MB in the end (delta: -6.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 21:01:40,843 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 91.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 466.35ms. Allocated memory is still 113.2MB. Free memory was 71.7MB in the beginning and 78.4MB in the end (delta: -6.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1515]: 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_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa --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 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 21:01:42,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 21:01:42,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 21:01:42,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 21:01:42,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 21:01:42,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 21:01:42,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 21:01:42,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 21:01:42,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 21:01:42,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 21:01:42,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 21:01:42,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 21:01:42,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 21:01:42,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 21:01:42,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 21:01:42,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 21:01:42,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 21:01:42,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 21:01:42,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 21:01:42,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 21:01:42,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 21:01:42,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 21:01:42,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 21:01:42,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 21:01:42,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 21:01:42,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 21:01:42,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 21:01:42,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 21:01:42,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 21:01:42,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 21:01:42,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 21:01:42,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 21:01:42,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 21:01:42,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 21:01:42,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 21:01:42,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 21:01:42,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 21:01:42,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 21:01:42,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 21:01:42,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 21:01:42,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 21:01:42,301 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2021-12-06 21:01:42,327 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 21:01:42,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 21:01:42,327 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 21:01:42,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 21:01:42,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 21:01:42,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 21:01:42,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 21:01:42,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 21:01:42,330 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 21:01:42,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 21:01:42,330 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 21:01:42,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 21:01:42,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 21:01:42,331 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 21:01:42,331 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 21:01:42,331 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 21:01:42,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 21:01:42,332 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 21:01:42,332 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 21:01:42,332 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 21:01:42,332 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 21:01:42,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 21:01:42,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 21:01:42,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 21:01:42,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:01:42,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 21:01:42,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 21:01:42,334 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 21:01:42,334 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 21:01:42,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 21:01:42,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 21:01:42,334 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_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2021-12-06 21:01:42,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 21:01:42,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 21:01:42,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 21:01:42,587 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 21:01:42,588 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 21:01:42,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-12-06 21:01:42,631 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/data/7e341d2e6/3b763739e11644e9a0218c43d8a07900/FLAG38c4b2b46 [2021-12-06 21:01:43,105 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 21:01:43,106 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-12-06 21:01:43,120 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/data/7e341d2e6/3b763739e11644e9a0218c43d8a07900/FLAG38c4b2b46 [2021-12-06 21:01:43,131 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/data/7e341d2e6/3b763739e11644e9a0218c43d8a07900 [2021-12-06 21:01:43,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 21:01:43,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 21:01:43,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 21:01:43,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 21:01:43,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 21:01:43,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:01:43" (1/1) ... [2021-12-06 21:01:43,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3237b0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:43, skipping insertion in model container [2021-12-06 21:01:43,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 09:01:43" (1/1) ... [2021-12-06 21:01:43,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 21:01:43,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:01:43,558 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_04386b7a-dc44-464d-9023-94bc60b5acd3/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-12-06 21:01:43,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:01:43,603 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 21:01:43,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 21:01:43,641 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_04386b7a-dc44-464d-9023-94bc60b5acd3/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-12-06 21:01:43,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:01:43,689 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 21:01:43,739 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_04386b7a-dc44-464d-9023-94bc60b5acd3/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-12-06 21:01:43,770 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 21:01:43,842 INFO L208 MainTranslator]: Completed translation [2021-12-06 21:01:43,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:43 WrapperNode [2021-12-06 21:01:43,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 21:01:43,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 21:01:43,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 21:01:43,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 21:01:43,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:43" (1/1) ... [2021-12-06 21:01:43,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:43" (1/1) ... [2021-12-06 21:01:43,926 INFO L137 Inliner]: procedures = 353, calls = 114, calls flagged for inlining = 10, calls inlined = 9, statements flattened = 386 [2021-12-06 21:01:43,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 21:01:43,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 21:01:43,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 21:01:43,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 21:01:43,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:43" (1/1) ... [2021-12-06 21:01:43,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:43" (1/1) ... [2021-12-06 21:01:43,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:43" (1/1) ... [2021-12-06 21:01:43,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:43" (1/1) ... [2021-12-06 21:01:43,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:43" (1/1) ... [2021-12-06 21:01:43,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:43" (1/1) ... [2021-12-06 21:01:43,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:43" (1/1) ... [2021-12-06 21:01:43,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 21:01:43,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 21:01:43,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 21:01:43,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 21:01:43,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:43" (1/1) ... [2021-12-06 21:01:43,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 21:01:43,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:01:44,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 21:01:44,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 21:01:44,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-06 21:01:44,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 21:01:44,042 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 21:01:44,042 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 21:01:44,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 21:01:44,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-06 21:01:44,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 21:01:44,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 21:01:44,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 21:01:44,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-06 21:01:44,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 21:01:44,044 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-12-06 21:01:44,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 21:01:44,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 21:01:44,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 21:01:44,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 21:01:44,285 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 21:01:44,287 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 21:01:45,266 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 21:01:45,274 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 21:01:45,274 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-12-06 21:01:45,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:01:45 BoogieIcfgContainer [2021-12-06 21:01:45,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 21:01:45,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 21:01:45,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 21:01:45,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 21:01:45,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 09:01:43" (1/3) ... [2021-12-06 21:01:45,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3a3c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:01:45, skipping insertion in model container [2021-12-06 21:01:45,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 09:01:43" (2/3) ... [2021-12-06 21:01:45,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3a3c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 09:01:45, skipping insertion in model container [2021-12-06 21:01:45,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 09:01:45" (3/3) ... [2021-12-06 21:01:45,285 INFO L111 eAbstractionObserver]: Analyzing ICFG basename-2.i [2021-12-06 21:01:45,290 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 21:01:45,290 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 94 error locations. [2021-12-06 21:01:45,327 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 21:01:45,340 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 [2021-12-06 21:01:45,341 INFO L340 AbstractCegarLoop]: Starting to check reachability of 94 error locations. [2021-12-06 21:01:45,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 147 states have (on average 1.945578231292517) internal successors, (286), 241 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:01:45,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-06 21:01:45,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:45,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-06 21:01:45,365 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:01:45,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:45,370 INFO L85 PathProgramCache]: Analyzing trace with hash 37801, now seen corresponding path program 1 times [2021-12-06 21:01:45,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:01:45,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727409850] [2021-12-06 21:01:45,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:45,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:01:45,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:01:45,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:01:45,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 21:01:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:45,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 21:01:45,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:01:45,542 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 [2021-12-06 21:01:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:45,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:01:45,551 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:01:45,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727409850] [2021-12-06 21:01:45,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727409850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:45,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:45,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 21:01:45,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055114975] [2021-12-06 21:01:45,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:45,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:01:45,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:01:45,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:01:45,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:01:45,579 INFO L87 Difference]: Start difference. First operand has 245 states, 147 states have (on average 1.945578231292517) internal successors, (286), 241 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2021-12-06 21:01:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:46,026 INFO L93 Difference]: Finished difference Result 253 states and 287 transitions. [2021-12-06 21:01:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:01:46,028 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 [2021-12-06 21:01:46,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:46,035 INFO L225 Difference]: With dead ends: 253 [2021-12-06 21:01:46,035 INFO L226 Difference]: Without dead ends: 251 [2021-12-06 21:01:46,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:01:46,039 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 241 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:46,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 207 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:01:46,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-12-06 21:01:46,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 235. [2021-12-06 21:01:46,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 142 states have (on average 1.8591549295774648) internal successors, (264), 231 states have internal predecessors, (264), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:01:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 268 transitions. [2021-12-06 21:01:46,077 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 268 transitions. Word has length 3 [2021-12-06 21:01:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:46,078 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 268 transitions. [2021-12-06 21:01:46,078 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) [2021-12-06 21:01:46,078 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 268 transitions. [2021-12-06 21:01:46,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-06 21:01:46,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:46,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-06 21:01:46,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 21:01:46,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:01:46,280 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:01:46,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:46,283 INFO L85 PathProgramCache]: Analyzing trace with hash 37802, now seen corresponding path program 1 times [2021-12-06 21:01:46,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:01:46,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499213236] [2021-12-06 21:01:46,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:46,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:01:46,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:01:46,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:01:46,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 21:01:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:46,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 21:01:46,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:01:46,424 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 [2021-12-06 21:01:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:46,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:01:46,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:01:46,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499213236] [2021-12-06 21:01:46,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499213236] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:46,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:46,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 21:01:46,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530891996] [2021-12-06 21:01:46,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:46,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:01:46,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:01:46,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:01:46,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:01:46,436 INFO L87 Difference]: Start difference. First operand 235 states and 268 transitions. 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) [2021-12-06 21:01:47,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:47,002 INFO L93 Difference]: Finished difference Result 234 states and 267 transitions. [2021-12-06 21:01:47,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:01:47,003 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 [2021-12-06 21:01:47,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:47,005 INFO L225 Difference]: With dead ends: 234 [2021-12-06 21:01:47,005 INFO L226 Difference]: Without dead ends: 234 [2021-12-06 21:01:47,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:01:47,007 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 13 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:47,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 430 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 21:01:47,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-12-06 21:01:47,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-12-06 21:01:47,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 142 states have (on average 1.852112676056338) internal successors, (263), 230 states have internal predecessors, (263), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:01:47,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 267 transitions. [2021-12-06 21:01:47,023 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 267 transitions. Word has length 3 [2021-12-06 21:01:47,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:47,024 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 267 transitions. [2021-12-06 21:01:47,024 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) [2021-12-06 21:01:47,024 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 267 transitions. [2021-12-06 21:01:47,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 21:01:47,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:47,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 21:01:47,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 21:01:47,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:01:47,226 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:01:47,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:47,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1126113961, now seen corresponding path program 1 times [2021-12-06 21:01:47,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:01:47,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541826476] [2021-12-06 21:01:47,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:47,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:01:47,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:01:47,234 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:01:47,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 21:01:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:47,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 21:01:47,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:01:47,369 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 [2021-12-06 21:01:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:47,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:01:47,411 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:01:47,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541826476] [2021-12-06 21:01:47,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541826476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:47,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:47,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:01:47,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764589392] [2021-12-06 21:01:47,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:47,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:01:47,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:01:47,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:01:47,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:01:47,413 INFO L87 Difference]: Start difference. First operand 234 states and 267 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-06 21:01:48,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:48,075 INFO L93 Difference]: Finished difference Result 238 states and 271 transitions. [2021-12-06 21:01:48,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 21:01:48,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 21:01:48,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:48,077 INFO L225 Difference]: With dead ends: 238 [2021-12-06 21:01:48,077 INFO L226 Difference]: Without dead ends: 238 [2021-12-06 21:01:48,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:01:48,079 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 17 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:48,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 431 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 21:01:48,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-12-06 21:01:48,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2021-12-06 21:01:48,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 144 states have (on average 1.8402777777777777) internal successors, (265), 232 states have internal predecessors, (265), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:01:48,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 269 transitions. [2021-12-06 21:01:48,088 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 269 transitions. Word has length 6 [2021-12-06 21:01:48,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:48,089 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 269 transitions. [2021-12-06 21:01:48,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-06 21:01:48,089 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 269 transitions. [2021-12-06 21:01:48,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 21:01:48,089 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:48,089 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:48,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 21:01:48,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:01:48,291 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:01:48,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:48,293 INFO L85 PathProgramCache]: Analyzing trace with hash -2080656212, now seen corresponding path program 1 times [2021-12-06 21:01:48,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:01:48,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550585290] [2021-12-06 21:01:48,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:48,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:01:48,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:01:48,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:01:48,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 21:01:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:48,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 21:01:48,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:01:48,417 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 [2021-12-06 21:01:48,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:48,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:01:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:49,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:01:49,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550585290] [2021-12-06 21:01:49,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550585290] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:01:49,398 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 21:01:49,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-12-06 21:01:49,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365299605] [2021-12-06 21:01:49,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 21:01:49,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:01:49,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:01:49,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:01:49,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:01:49,399 INFO L87 Difference]: Start difference. First operand 236 states and 269 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 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) [2021-12-06 21:01:53,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:53,479 INFO L93 Difference]: Finished difference Result 242 states and 275 transitions. [2021-12-06 21:01:53,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 21:01:53,481 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 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 10 [2021-12-06 21:01:53,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:53,483 INFO L225 Difference]: With dead ends: 242 [2021-12-06 21:01:53,483 INFO L226 Difference]: Without dead ends: 242 [2021-12-06 21:01:53,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:53,484 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 31 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:53,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 1116 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-06 21:01:53,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-12-06 21:01:53,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-12-06 21:01:53,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 151 states have (on average 1.794701986754967) internal successors, (271), 238 states have internal predecessors, (271), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:01:53,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 275 transitions. [2021-12-06 21:01:53,495 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 275 transitions. Word has length 10 [2021-12-06 21:01:53,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:53,496 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 275 transitions. [2021-12-06 21:01:53,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 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) [2021-12-06 21:01:53,496 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 275 transitions. [2021-12-06 21:01:53,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 21:01:53,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:53,497 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:53,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 21:01:53,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:01:53,698 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:01:53,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:53,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1026813049, now seen corresponding path program 1 times [2021-12-06 21:01:53,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:01:53,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140549466] [2021-12-06 21:01:53,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:53,705 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:01:53,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:01:53,708 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:01:53,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 21:01:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:53,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 21:01:53,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:01:53,873 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:53,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:01:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:53,938 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:01:53,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140549466] [2021-12-06 21:01:53,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140549466] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:01:53,938 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 21:01:53,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-12-06 21:01:53,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830953485] [2021-12-06 21:01:53,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 21:01:53,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:01:53,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:01:53,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:01:53,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:01:53,939 INFO L87 Difference]: Start difference. First operand 242 states and 275 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-12-06 21:01:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:54,117 INFO L93 Difference]: Finished difference Result 262 states and 295 transitions. [2021-12-06 21:01:54,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 21:01:54,117 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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 19 [2021-12-06 21:01:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:54,118 INFO L225 Difference]: With dead ends: 262 [2021-12-06 21:01:54,119 INFO L226 Difference]: Without dead ends: 262 [2021-12-06 21:01:54,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-12-06 21:01:54,119 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 24 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:54,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 1835 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 21:01:54,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-12-06 21:01:54,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-12-06 21:01:54,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 171 states have (on average 1.7017543859649122) internal successors, (291), 258 states have internal predecessors, (291), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:01:54,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 295 transitions. [2021-12-06 21:01:54,126 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 295 transitions. Word has length 19 [2021-12-06 21:01:54,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:54,127 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 295 transitions. [2021-12-06 21:01:54,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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) [2021-12-06 21:01:54,127 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 295 transitions. [2021-12-06 21:01:54,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 21:01:54,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:54,128 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:54,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 21:01:54,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:01:54,328 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:01:54,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:54,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1411098840, now seen corresponding path program 2 times [2021-12-06 21:01:54,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:01:54,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367206137] [2021-12-06 21:01:54,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:01:54,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:01:54,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:01:54,330 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:01:54,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 21:01:54,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 21:01:54,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:01:54,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 21:01:54,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:01:54,467 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 21:01:54,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 19 [2021-12-06 21:01:54,645 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-06 21:01:54,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:01:54,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:01:54,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367206137] [2021-12-06 21:01:54,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367206137] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:54,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:54,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-06 21:01:54,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666298938] [2021-12-06 21:01:54,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:54,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:01:54,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:01:54,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:01:54,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:01:54,647 INFO L87 Difference]: Start difference. First operand 262 states and 295 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-12-06 21:01:54,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:54,991 INFO L93 Difference]: Finished difference Result 277 states and 311 transitions. [2021-12-06 21:01:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:01:54,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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 39 [2021-12-06 21:01:54,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:54,992 INFO L225 Difference]: With dead ends: 277 [2021-12-06 21:01:54,993 INFO L226 Difference]: Without dead ends: 277 [2021-12-06 21:01:54,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:01:54,993 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 237 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:54,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 202 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 21:01:54,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-12-06 21:01:54,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 261. [2021-12-06 21:01:54,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 171 states have (on average 1.695906432748538) internal successors, (290), 257 states have internal predecessors, (290), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:01:54,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 294 transitions. [2021-12-06 21:01:54,999 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 294 transitions. Word has length 39 [2021-12-06 21:01:54,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:54,999 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 294 transitions. [2021-12-06 21:01:54,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2021-12-06 21:01:55,000 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 294 transitions. [2021-12-06 21:01:55,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 21:01:55,000 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:55,000 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:55,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 21:01:55,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:01:55,202 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:01:55,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:55,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1411098841, now seen corresponding path program 1 times [2021-12-06 21:01:55,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:01:55,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569335349] [2021-12-06 21:01:55,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:55,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:01:55,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:01:55,209 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:01:55,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 21:01:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:55,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 21:01:55,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:01:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:55,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:01:55,715 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 21:01:55,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:01:55,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569335349] [2021-12-06 21:01:55,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569335349] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:01:55,716 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 21:01:55,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-12-06 21:01:55,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225905748] [2021-12-06 21:01:55,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 21:01:55,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 21:01:55,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:01:55,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 21:01:55,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-12-06 21:01:55,717 INFO L87 Difference]: Start difference. First operand 261 states and 294 transitions. Second operand has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 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) [2021-12-06 21:01:56,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:56,144 INFO L93 Difference]: Finished difference Result 269 states and 302 transitions. [2021-12-06 21:01:56,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 21:01:56,145 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 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 39 [2021-12-06 21:01:56,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:56,147 INFO L225 Difference]: With dead ends: 269 [2021-12-06 21:01:56,147 INFO L226 Difference]: Without dead ends: 269 [2021-12-06 21:01:56,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-12-06 21:01:56,148 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 30 mSDsluCounter, 3171 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3441 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:56,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 3441 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:01:56,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-12-06 21:01:56,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2021-12-06 21:01:56,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 179 states have (on average 1.664804469273743) internal successors, (298), 265 states have internal predecessors, (298), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:01:56,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 302 transitions. [2021-12-06 21:01:56,156 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 302 transitions. Word has length 39 [2021-12-06 21:01:56,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:56,156 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 302 transitions. [2021-12-06 21:01:56,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.65) internal successors, (73), 20 states have internal predecessors, (73), 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) [2021-12-06 21:01:56,157 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 302 transitions. [2021-12-06 21:01:56,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 21:01:56,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:56,158 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:56,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 21:01:56,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:01:56,360 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:01:56,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:56,361 INFO L85 PathProgramCache]: Analyzing trace with hash 233252627, now seen corresponding path program 2 times [2021-12-06 21:01:56,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:01:56,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199578934] [2021-12-06 21:01:56,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:01:56,364 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:01:56,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:01:56,367 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:01:56,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 21:01:56,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 21:01:56,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:01:56,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 21:01:56,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:01:56,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:56,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 21:01:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-06 21:01:56,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:01:56,829 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:01:56,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199578934] [2021-12-06 21:01:56,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199578934] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:56,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:56,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 21:01:56,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409508969] [2021-12-06 21:01:56,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:56,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:01:56,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:01:56,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:01:56,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:01:56,830 INFO L87 Difference]: Start difference. First operand 269 states and 302 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:57,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:57,386 INFO L93 Difference]: Finished difference Result 284 states and 318 transitions. [2021-12-06 21:01:57,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 21:01:57,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-12-06 21:01:57,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:57,389 INFO L225 Difference]: With dead ends: 284 [2021-12-06 21:01:57,389 INFO L226 Difference]: Without dead ends: 284 [2021-12-06 21:01:57,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:01:57,389 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 275 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:57,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 158 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 21:01:57,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-12-06 21:01:57,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 268. [2021-12-06 21:01:57,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 179 states have (on average 1.6592178770949721) internal successors, (297), 264 states have internal predecessors, (297), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:01:57,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 301 transitions. [2021-12-06 21:01:57,395 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 301 transitions. Word has length 47 [2021-12-06 21:01:57,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:57,395 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 301 transitions. [2021-12-06 21:01:57,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 21:01:57,396 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 301 transitions. [2021-12-06 21:01:57,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 21:01:57,396 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:57,396 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:57,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 21:01:57,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:01:57,598 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:01:57,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:57,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1065773764, now seen corresponding path program 1 times [2021-12-06 21:01:57,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:01:57,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409139102] [2021-12-06 21:01:57,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:57,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:01:57,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:01:57,605 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:01:57,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 21:01:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:58,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 21:01:58,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:01:58,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:01:58,094 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 21:01:58,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-12-06 21:01:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-06 21:01:58,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:01:58,120 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:01:58,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409139102] [2021-12-06 21:01:58,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409139102] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:58,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:58,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 21:01:58,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701322064] [2021-12-06 21:01:58,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:58,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 21:01:58,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:01:58,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 21:01:58,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:01:58,121 INFO L87 Difference]: Start difference. First operand 268 states and 301 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:01:58,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:58,490 INFO L93 Difference]: Finished difference Result 279 states and 313 transitions. [2021-12-06 21:01:58,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 21:01:58,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-12-06 21:01:58,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:58,492 INFO L225 Difference]: With dead ends: 279 [2021-12-06 21:01:58,492 INFO L226 Difference]: Without dead ends: 279 [2021-12-06 21:01:58,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 21:01:58,493 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 222 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:58,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 211 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 21:01:58,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-12-06 21:01:58,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 263. [2021-12-06 21:01:58,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 179 states have (on average 1.6312849162011174) internal successors, (292), 259 states have internal predecessors, (292), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:01:58,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 296 transitions. [2021-12-06 21:01:58,498 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 296 transitions. Word has length 55 [2021-12-06 21:01:58,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:58,499 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 296 transitions. [2021-12-06 21:01:58,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:01:58,499 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 296 transitions. [2021-12-06 21:01:58,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 21:01:58,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:58,500 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:58,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 21:01:58,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:01:58,702 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:01:58,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:58,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1065773765, now seen corresponding path program 1 times [2021-12-06 21:01:58,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:01:58,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443318193] [2021-12-06 21:01:58,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:58,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:01:58,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:01:58,708 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:01:58,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 21:01:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:59,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 21:01:59,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:01:59,175 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-12-06 21:01:59,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2021-12-06 21:01:59,260 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-06 21:01:59,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:01:59,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:01:59,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443318193] [2021-12-06 21:01:59,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443318193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:01:59,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:01:59,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 21:01:59,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426001641] [2021-12-06 21:01:59,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:01:59,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:01:59,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:01:59,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:01:59,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:01:59,262 INFO L87 Difference]: Start difference. First operand 263 states and 296 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:00,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:02:00,848 INFO L93 Difference]: Finished difference Result 443 states and 507 transitions. [2021-12-06 21:02:00,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:02:00,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-12-06 21:02:00,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:02:00,851 INFO L225 Difference]: With dead ends: 443 [2021-12-06 21:02:00,851 INFO L226 Difference]: Without dead ends: 443 [2021-12-06 21:02:00,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:02:00,852 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 642 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:02:00,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 779 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 21:02:00,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-12-06 21:02:00,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 367. [2021-12-06 21:02:00,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 283 states have (on average 1.7279151943462898) internal successors, (489), 362 states have internal predecessors, (489), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:02:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 495 transitions. [2021-12-06 21:02:00,859 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 495 transitions. Word has length 55 [2021-12-06 21:02:00,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:00,859 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 495 transitions. [2021-12-06 21:02:00,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:00,860 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 495 transitions. [2021-12-06 21:02:00,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 21:02:00,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:00,860 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:00,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-06 21:02:01,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:02:01,062 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:02:01,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:01,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2067963466, now seen corresponding path program 1 times [2021-12-06 21:02:01,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:02:01,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338357021] [2021-12-06 21:02:01,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:01,066 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:02:01,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:02:01,068 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:02:01,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 21:02:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:01,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 21:02:01,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:01,644 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-12-06 21:02:01,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2021-12-06 21:02:01,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:02:01,995 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-12-06 21:02:01,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 36 [2021-12-06 21:02:02,014 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 21:02:02,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-12-06 21:02:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-06 21:02:02,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:02,159 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:02:02,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338357021] [2021-12-06 21:02:02,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338357021] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:02,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:02,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 21:02:02,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242822547] [2021-12-06 21:02:02,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:02,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:02:02,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:02:02,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:02:02,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:02:02,160 INFO L87 Difference]: Start difference. First operand 367 states and 495 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:02,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:02:02,274 INFO L93 Difference]: Finished difference Result 368 states and 496 transitions. [2021-12-06 21:02:02,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:02:02,275 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-12-06 21:02:02,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:02:02,276 INFO L225 Difference]: With dead ends: 368 [2021-12-06 21:02:02,276 INFO L226 Difference]: Without dead ends: 368 [2021-12-06 21:02:02,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:02:02,277 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 4 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 305 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:02:02,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1445 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 305 Unchecked, 0.0s Time] [2021-12-06 21:02:02,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-12-06 21:02:02,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2021-12-06 21:02:02,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 284 states have (on average 1.7253521126760563) internal successors, (490), 363 states have internal predecessors, (490), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 21:02:02,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 496 transitions. [2021-12-06 21:02:02,284 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 496 transitions. Word has length 58 [2021-12-06 21:02:02,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:02,285 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 496 transitions. [2021-12-06 21:02:02,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:02,285 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 496 transitions. [2021-12-06 21:02:02,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 21:02:02,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:02,285 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:02,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 21:02:02,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:02:02,486 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:02:02,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:02,487 INFO L85 PathProgramCache]: Analyzing trace with hash -317642580, now seen corresponding path program 1 times [2021-12-06 21:02:02,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:02:02,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088555143] [2021-12-06 21:02:02,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:02,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:02:02,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:02:02,490 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:02:02,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 21:02:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:02,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 21:02:02,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-06 21:02:02,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:02,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:02:02,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088555143] [2021-12-06 21:02:02,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088555143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:02,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:02,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:02:02,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181519315] [2021-12-06 21:02:02,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:02,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 21:02:02,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:02:02,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 21:02:02,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 21:02:02,840 INFO L87 Difference]: Start difference. First operand 368 states and 496 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:03,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:02:03,151 INFO L93 Difference]: Finished difference Result 286 states and 320 transitions. [2021-12-06 21:02:03,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 21:02:03,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-12-06 21:02:03,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:02:03,153 INFO L225 Difference]: With dead ends: 286 [2021-12-06 21:02:03,153 INFO L226 Difference]: Without dead ends: 286 [2021-12-06 21:02:03,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:02:03,154 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 263 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 21:02:03,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 954 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 21:02:03,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-12-06 21:02:03,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 264. [2021-12-06 21:02:03,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 181 states have (on average 1.6187845303867403) internal successors, (293), 260 states have internal predecessors, (293), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:02:03,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 297 transitions. [2021-12-06 21:02:03,159 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 297 transitions. Word has length 59 [2021-12-06 21:02:03,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:03,159 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 297 transitions. [2021-12-06 21:02:03,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:03,160 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 297 transitions. [2021-12-06 21:02:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 21:02:03,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:03,163 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:03,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-06 21:02:03,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:02:03,364 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:02:03,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:03,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1256967413, now seen corresponding path program 1 times [2021-12-06 21:02:03,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:02:03,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456942079] [2021-12-06 21:02:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:03,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:02:03,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:02:03,366 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:02:03,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 21:02:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:03,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 21:02:03,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:03,662 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-06 21:02:03,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:03,662 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:02:03,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456942079] [2021-12-06 21:02:03,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456942079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:03,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:03,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 21:02:03,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094207318] [2021-12-06 21:02:03,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:03,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 21:02:03,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:02:03,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 21:02:03,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:02:03,664 INFO L87 Difference]: Start difference. First operand 264 states and 297 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:04,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:02:04,434 INFO L93 Difference]: Finished difference Result 282 states and 316 transitions. [2021-12-06 21:02:04,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 21:02:04,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2021-12-06 21:02:04,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:02:04,437 INFO L225 Difference]: With dead ends: 282 [2021-12-06 21:02:04,437 INFO L226 Difference]: Without dead ends: 282 [2021-12-06 21:02:04,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 21:02:04,438 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 277 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 21:02:04,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 631 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 21:02:04,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-12-06 21:02:04,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 275. [2021-12-06 21:02:04,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 193 states have (on average 1.61139896373057) internal successors, (311), 271 states have internal predecessors, (311), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:02:04,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 315 transitions. [2021-12-06 21:02:04,443 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 315 transitions. Word has length 60 [2021-12-06 21:02:04,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:04,443 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 315 transitions. [2021-12-06 21:02:04,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:04,444 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 315 transitions. [2021-12-06 21:02:04,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 21:02:04,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:04,444 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:04,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-06 21:02:04,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:02:04,645 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:02:04,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:04,645 INFO L85 PathProgramCache]: Analyzing trace with hash -311284142, now seen corresponding path program 1 times [2021-12-06 21:02:04,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:02:04,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365263457] [2021-12-06 21:02:04,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:04,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:02:04,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:02:04,647 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:02:04,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 21:02:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:05,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 21:02:05,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:05,062 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-06 21:02:05,062 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-12-06 21:02:05,089 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 21:02:05,090 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 23 treesize of output 30 [2021-12-06 21:02:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-06 21:02:05,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:05,153 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:02:05,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365263457] [2021-12-06 21:02:05,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365263457] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:05,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:05,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 21:02:05,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624395864] [2021-12-06 21:02:05,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:05,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 21:02:05,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:02:05,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 21:02:05,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:02:05,155 INFO L87 Difference]: Start difference. First operand 275 states and 315 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:05,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:02:05,212 INFO L93 Difference]: Finished difference Result 275 states and 314 transitions. [2021-12-06 21:02:05,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 21:02:05,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-12-06 21:02:05,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:02:05,215 INFO L225 Difference]: With dead ends: 275 [2021-12-06 21:02:05,215 INFO L226 Difference]: Without dead ends: 275 [2021-12-06 21:02:05,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 21:02:05,216 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 0 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:02:05,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 588 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 88 Unchecked, 0.1s Time] [2021-12-06 21:02:05,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-12-06 21:02:05,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2021-12-06 21:02:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 193 states have (on average 1.6062176165803108) internal successors, (310), 271 states have internal predecessors, (310), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:02:05,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 314 transitions. [2021-12-06 21:02:05,223 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 314 transitions. Word has length 61 [2021-12-06 21:02:05,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:05,224 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 314 transitions. [2021-12-06 21:02:05,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:05,224 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 314 transitions. [2021-12-06 21:02:05,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 21:02:05,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:05,225 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:05,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 21:02:05,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:02:05,426 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:02:05,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:05,428 INFO L85 PathProgramCache]: Analyzing trace with hash -311284141, now seen corresponding path program 1 times [2021-12-06 21:02:05,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:02:05,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27545412] [2021-12-06 21:02:05,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:05,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:02:05,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:02:05,435 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:02:05,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 21:02:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:05,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 21:02:05,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:05,959 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-06 21:02:05,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 18 [2021-12-06 21:02:05,983 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 21:02:05,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 21:02:06,205 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 21:02:06,205 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 17 treesize of output 23 [2021-12-06 21:02:06,243 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 21:02:06,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-12-06 21:02:06,469 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-06 21:02:06,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:06,469 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:02:06,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27545412] [2021-12-06 21:02:06,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27545412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:06,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:06,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 21:02:06,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174865374] [2021-12-06 21:02:06,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:06,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:02:06,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:02:06,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:02:06,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:02:06,470 INFO L87 Difference]: Start difference. First operand 275 states and 314 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:06,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:02:06,597 INFO L93 Difference]: Finished difference Result 275 states and 313 transitions. [2021-12-06 21:02:06,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 21:02:06,597 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-12-06 21:02:06,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:02:06,599 INFO L225 Difference]: With dead ends: 275 [2021-12-06 21:02:06,599 INFO L226 Difference]: Without dead ends: 275 [2021-12-06 21:02:06,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:02:06,599 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 4 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 348 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 21:02:06,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1389 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 348 Unchecked, 0.0s Time] [2021-12-06 21:02:06,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-12-06 21:02:06,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2021-12-06 21:02:06,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 193 states have (on average 1.6010362694300517) internal successors, (309), 271 states have internal predecessors, (309), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:02:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 313 transitions. [2021-12-06 21:02:06,605 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 313 transitions. Word has length 61 [2021-12-06 21:02:06,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:06,605 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 313 transitions. [2021-12-06 21:02:06,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:06,606 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 313 transitions. [2021-12-06 21:02:06,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 21:02:06,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:06,606 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:06,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-06 21:02:06,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:02:06,808 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:02:06,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:06,809 INFO L85 PathProgramCache]: Analyzing trace with hash -631451440, now seen corresponding path program 1 times [2021-12-06 21:02:06,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:02:06,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785205960] [2021-12-06 21:02:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:06,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:02:06,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:02:06,814 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:02:06,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 21:02:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:07,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 21:02:07,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:07,342 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 [2021-12-06 21:02:07,362 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 16 treesize of output 12 [2021-12-06 21:02:07,486 INFO L354 Elim1Store]: treesize reduction 46, result has 20.7 percent of original size [2021-12-06 21:02:07,487 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 45 treesize of output 35 [2021-12-06 21:02:07,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2021-12-06 21:02:07,577 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-06 21:02:07,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:07,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:02:07,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785205960] [2021-12-06 21:02:07,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785205960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:07,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:07,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:02:07,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016213667] [2021-12-06 21:02:07,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:07,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 21:02:07,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:02:07,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 21:02:07,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 21:02:07,579 INFO L87 Difference]: Start difference. First operand 275 states and 313 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:08,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:02:08,585 INFO L93 Difference]: Finished difference Result 273 states and 310 transitions. [2021-12-06 21:02:08,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:02:08,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-12-06 21:02:08,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:02:08,587 INFO L225 Difference]: With dead ends: 273 [2021-12-06 21:02:08,587 INFO L226 Difference]: Without dead ends: 273 [2021-12-06 21:02:08,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:02:08,588 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 235 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 21:02:08,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 887 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 21:02:08,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-12-06 21:02:08,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2021-12-06 21:02:08,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 193 states have (on average 1.5854922279792747) internal successors, (306), 269 states have internal predecessors, (306), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:02:08,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 310 transitions. [2021-12-06 21:02:08,592 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 310 transitions. Word has length 64 [2021-12-06 21:02:08,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:08,592 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 310 transitions. [2021-12-06 21:02:08,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:08,593 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 310 transitions. [2021-12-06 21:02:08,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 21:02:08,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:08,593 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:08,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-06 21:02:08,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:02:08,793 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:02:08,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:08,794 INFO L85 PathProgramCache]: Analyzing trace with hash -631451439, now seen corresponding path program 1 times [2021-12-06 21:02:08,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:02:08,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674782786] [2021-12-06 21:02:08,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:08,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:02:08,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:02:08,796 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:02:08,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 21:02:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:09,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 21:02:09,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:09,263 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 22 treesize of output 20 [2021-12-06 21:02:09,283 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 [2021-12-06 21:02:09,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-06 21:02:09,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-06 21:02:09,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-06 21:02:09,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2021-12-06 21:02:09,462 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 27 treesize of output 9 [2021-12-06 21:02:09,466 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 7 [2021-12-06 21:02:09,484 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-06 21:02:09,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:09,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:02:09,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674782786] [2021-12-06 21:02:09,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674782786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:09,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:09,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 21:02:09,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21959589] [2021-12-06 21:02:09,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:09,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:02:09,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:02:09,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:02:09,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:02:09,485 INFO L87 Difference]: Start difference. First operand 273 states and 310 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:11,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:02:11,188 INFO L93 Difference]: Finished difference Result 272 states and 308 transitions. [2021-12-06 21:02:11,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 21:02:11,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-12-06 21:02:11,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:02:11,190 INFO L225 Difference]: With dead ends: 272 [2021-12-06 21:02:11,191 INFO L226 Difference]: Without dead ends: 272 [2021-12-06 21:02:11,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:02:11,191 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 232 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 21:02:11,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 893 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 21:02:11,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-12-06 21:02:11,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-12-06 21:02:11,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 193 states have (on average 1.5751295336787565) internal successors, (304), 268 states have internal predecessors, (304), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:02:11,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 308 transitions. [2021-12-06 21:02:11,196 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 308 transitions. Word has length 64 [2021-12-06 21:02:11,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:11,196 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 308 transitions. [2021-12-06 21:02:11,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:11,196 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 308 transitions. [2021-12-06 21:02:11,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 21:02:11,196 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:11,196 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:11,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-06 21:02:11,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:02:11,398 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:02:11,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:11,399 INFO L85 PathProgramCache]: Analyzing trace with hash -889593477, now seen corresponding path program 1 times [2021-12-06 21:02:11,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:02:11,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935676365] [2021-12-06 21:02:11,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:11,402 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:02:11,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:02:11,404 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:02:11,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 21:02:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:11,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 21:02:11,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:11,967 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 20 treesize of output 18 [2021-12-06 21:02:12,015 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 21:02:12,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-12-06 21:02:12,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-06 21:02:12,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 41 [2021-12-06 21:02:12,256 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 21:02:12,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 51 [2021-12-06 21:02:12,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 20 [2021-12-06 21:02:12,377 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-06 21:02:12,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:12,377 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:02:12,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935676365] [2021-12-06 21:02:12,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935676365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:12,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:12,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 21:02:12,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327218947] [2021-12-06 21:02:12,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:12,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 21:02:12,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:02:12,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 21:02:12,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-06 21:02:12,378 INFO L87 Difference]: Start difference. First operand 272 states and 308 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:14,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:02:14,062 INFO L93 Difference]: Finished difference Result 300 states and 340 transitions. [2021-12-06 21:02:14,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:02:14,063 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2021-12-06 21:02:14,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:02:14,065 INFO L225 Difference]: With dead ends: 300 [2021-12-06 21:02:14,065 INFO L226 Difference]: Without dead ends: 300 [2021-12-06 21:02:14,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-12-06 21:02:14,065 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 258 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:02:14,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 963 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 471 Invalid, 0 Unknown, 112 Unchecked, 1.5s Time] [2021-12-06 21:02:14,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-12-06 21:02:14,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 285. [2021-12-06 21:02:14,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 206 states have (on average 1.5825242718446602) internal successors, (326), 281 states have internal predecessors, (326), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:02:14,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 330 transitions. [2021-12-06 21:02:14,070 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 330 transitions. Word has length 68 [2021-12-06 21:02:14,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:14,070 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 330 transitions. [2021-12-06 21:02:14,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:14,070 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 330 transitions. [2021-12-06 21:02:14,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 21:02:14,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:14,071 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:14,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-06 21:02:14,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:02:14,272 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:02:14,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:14,273 INFO L85 PathProgramCache]: Analyzing trace with hash -889593476, now seen corresponding path program 1 times [2021-12-06 21:02:14,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:02:14,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47463265] [2021-12-06 21:02:14,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:14,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:02:14,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:02:14,278 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:02:14,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-06 21:02:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:14,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 21:02:14,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:14,958 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 22 treesize of output 20 [2021-12-06 21:02:14,992 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 [2021-12-06 21:02:15,004 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 21:02:15,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-12-06 21:02:15,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-06 21:02:15,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-06 21:02:15,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 34 [2021-12-06 21:02:15,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2021-12-06 21:02:15,286 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 21:02:15,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 57 [2021-12-06 21:02:15,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-12-06 21:02:15,400 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 40 treesize of output 13 [2021-12-06 21:02:15,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2021-12-06 21:02:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-06 21:02:15,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:02:15,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:02:15,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47463265] [2021-12-06 21:02:15,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47463265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:02:15,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:02:15,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 21:02:15,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596139481] [2021-12-06 21:02:15,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:02:15,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 21:02:15,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 21:02:15,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 21:02:15,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-06 21:02:15,435 INFO L87 Difference]: Start difference. First operand 285 states and 330 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:18,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:02:18,443 INFO L93 Difference]: Finished difference Result 300 states and 337 transitions. [2021-12-06 21:02:18,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 21:02:18,444 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2021-12-06 21:02:18,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:02:18,446 INFO L225 Difference]: With dead ends: 300 [2021-12-06 21:02:18,446 INFO L226 Difference]: Without dead ends: 300 [2021-12-06 21:02:18,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-12-06 21:02:18,447 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 487 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:02:18,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 920 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 21:02:18,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-12-06 21:02:18,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 285. [2021-12-06 21:02:18,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 206 states have (on average 1.5631067961165048) internal successors, (322), 281 states have internal predecessors, (322), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 21:02:18,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 326 transitions. [2021-12-06 21:02:18,453 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 326 transitions. Word has length 68 [2021-12-06 21:02:18,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:02:18,454 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 326 transitions. [2021-12-06 21:02:18,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 21:02:18,454 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 326 transitions. [2021-12-06 21:02:18,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-06 21:02:18,455 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:02:18,455 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:02:18,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-12-06 21:02:18,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 21:02:18,656 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-12-06 21:02:18,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:02:18,657 INFO L85 PathProgramCache]: Analyzing trace with hash -269261804, now seen corresponding path program 1 times [2021-12-06 21:02:18,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 21:02:18,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088789579] [2021-12-06 21:02:18,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:18,660 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 21:02:18,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 21:02:18,663 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 21:02:18,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-06 21:02:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:19,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 21:02:19,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:19,270 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 20 treesize of output 18 [2021-12-06 21:02:19,319 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 21:02:19,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-12-06 21:02:19,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-06 21:02:19,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 39 [2021-12-06 21:02:19,601 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 21:02:19,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 51 [2021-12-06 21:02:19,718 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 21:02:19,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 51 [2021-12-06 21:02:19,767 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 47 treesize of output 20 [2021-12-06 21:02:19,852 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-12-06 21:02:19,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:02:19,959 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1551 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128#1.base| v_ArrVal_1551) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))))))))) (_ bv1 1)))) is different from false [2021-12-06 21:02:19,980 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1551 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) v_ArrVal_1551) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0)))))))))) (_ bv1 1)))) is different from false [2021-12-06 21:02:20,020 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1550 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1551 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base| v_ArrVal_1550))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1551)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))))))))) (_ bv1 1)))) is different from false [2021-12-06 21:02:20,041 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1550 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1551 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1550))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1551)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))))))))))) is different from false [2021-12-06 21:02:20,081 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1549 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1550 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1551 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1549))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1550)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1551)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))))))))))))) (_ bv1 1)))) is different from false [2021-12-06 21:02:20,118 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:02:20,119 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 88 [2021-12-06 21:02:20,126 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 20331 treesize of output 16290 [2021-12-06 21:02:20,247 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 16286 treesize of output 13150 [2021-12-06 21:02:20,299 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 13150 treesize of output 12926 [2021-12-06 21:02:20,350 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 12926 treesize of output 10462 [2021-12-06 21:02:37,894 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 21:02:37,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088789579] [2021-12-06 21:02:37,895 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 21:02:37,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [787031801] [2021-12-06 21:02:37,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:02:37,895 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 21:02:37,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 21:02:37,896 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 21:02:37,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04386b7a-dc44-464d-9023-94bc60b5acd3/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-12-06 21:02:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:02:39,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 21:02:39,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:02:39,906 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 22 treesize of output 20 [2021-12-06 21:02:39,942 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 21:02:39,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-12-06 21:02:39,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-06 21:02:40,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 41 [2021-12-06 21:02:40,115 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 21:02:40,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 52 [2021-12-06 21:02:40,206 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 21:02:40,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 51 [2021-12-06 21:02:40,255 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 47 treesize of output 20 [2021-12-06 21:02:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-12-06 21:02:40,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:02:40,423 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) v_ArrVal_1679) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0)))))))))))))) is different from false [2021-12-06 21:02:40,461 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1678 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem126#1.base| v_ArrVal_1678))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1679)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))))))))))) (_ bv1 1)) (_ bv0 1))) is different from false [2021-12-06 21:02:40,481 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1678 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1678))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1679)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))))))))))) (_ bv1 1)))) is different from false [2021-12-06 21:02:40,511 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1678 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1677 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|) (_ bv8 64)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1677))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1678)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1679)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))))))))))))))) is different from false [2021-12-06 21:02:40,547 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:02:40,547 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 90 [2021-12-06 21:02:40,553 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 14191 treesize of output 11500 [2021-12-06 21:02:40,806 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 8616 treesize of output 7195 [2021-12-06 21:02:40,831 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 7195 treesize of output 6152 [2021-12-06 21:02:40,855 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 6152 treesize of output 5928