./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/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_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/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 32bit --witnessprinter.graph.data.programhash 6376f52a263bde0c709cb35a0d040626ae764c5527f8161f54a95df7802768d2 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:41:11,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:41:11,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:41:11,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:41:11,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:41:11,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:41:11,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:41:11,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:41:11,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:41:11,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:41:11,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:41:11,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:41:11,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:41:11,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:41:11,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:41:11,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:41:11,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:41:11,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:41:11,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:41:11,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:41:11,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:41:11,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:41:11,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:41:11,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:41:11,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:41:11,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:41:11,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:41:11,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:41:11,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:41:11,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:41:11,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:41:11,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:41:11,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:41:11,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:41:11,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:41:11,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:41:11,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:41:11,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:41:11,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:41:11,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:41:11,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:41:11,646 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-07 01:41:11,663 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:41:11,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:41:11,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:41:11,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:41:11,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:41:11,664 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:41:11,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:41:11,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:41:11,665 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:41:11,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:41:11,665 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:41:11,665 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 01:41:11,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:41:11,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:41:11,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:41:11,666 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-07 01:41:11,666 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-07 01:41:11,666 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-07 01:41:11,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:41:11,666 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-07 01:41:11,666 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:41:11,666 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:41:11,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:41:11,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:41:11,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:41:11,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:41:11,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:41:11,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:41:11,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:41:11,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:41:11,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:41:11,668 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_f462972b-6231-49ea-944c-25c07f3b7bb1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6376f52a263bde0c709cb35a0d040626ae764c5527f8161f54a95df7802768d2 [2021-12-07 01:41:11,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:41:11,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:41:11,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:41:11,860 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:41:11,861 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:41:11,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2021-12-07 01:41:11,903 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/data/c880da879/82e3f0ec572f45eaa3212733f322ffa1/FLAG1bd2c790f [2021-12-07 01:41:12,320 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:41:12,321 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2021-12-07 01:41:12,333 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/data/c880da879/82e3f0ec572f45eaa3212733f322ffa1/FLAG1bd2c790f [2021-12-07 01:41:12,342 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/data/c880da879/82e3f0ec572f45eaa3212733f322ffa1 [2021-12-07 01:41:12,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:41:12,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:41:12,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:41:12,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:41:12,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:41:12,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:41:12" (1/1) ... [2021-12-07 01:41:12,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229aafb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:12, skipping insertion in model container [2021-12-07 01:41:12,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:41:12" (1/1) ... [2021-12-07 01:41:12,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:41:12,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:41:12,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:41:12,575 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) [2021-12-07 01:41:12,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d3f81c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:12, skipping insertion in model container [2021-12-07 01:41:12,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:41:12,576 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-07 01:41:12,577 INFO L158 Benchmark]: Toolchain (without parser) took 231.77ms. Allocated memory is still 123.7MB. Free memory was 80.8MB in the beginning and 95.1MB in the end (delta: -14.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-07 01:41:12,578 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 123.7MB. Free memory is still 98.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:41:12,578 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.82ms. Allocated memory is still 123.7MB. Free memory was 80.6MB in the beginning and 95.1MB in the end (delta: -14.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-07 01:41:12,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 123.7MB. Free memory is still 98.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.82ms. Allocated memory is still 123.7MB. Free memory was 80.6MB in the beginning and 95.1MB in the end (delta: -14.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 533]: 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_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/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_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/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 32bit --witnessprinter.graph.data.programhash 6376f52a263bde0c709cb35a0d040626ae764c5527f8161f54a95df7802768d2 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:41:13,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:41:13,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:41:13,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:41:13,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:41:13,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:41:13,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:41:13,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:41:13,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:41:13,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:41:13,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:41:13,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:41:13,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:41:13,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:41:13,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:41:13,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:41:13,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:41:14,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:41:14,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:41:14,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:41:14,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:41:14,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:41:14,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:41:14,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:41:14,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:41:14,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:41:14,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:41:14,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:41:14,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:41:14,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:41:14,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:41:14,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:41:14,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:41:14,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:41:14,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:41:14,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:41:14,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:41:14,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:41:14,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:41:14,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:41:14,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:41:14,026 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-07 01:41:14,053 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:41:14,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:41:14,053 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:41:14,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:41:14,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:41:14,055 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:41:14,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:41:14,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:41:14,056 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:41:14,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:41:14,056 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:41:14,056 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 01:41:14,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:41:14,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:41:14,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:41:14,057 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-07 01:41:14,057 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-07 01:41:14,058 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-07 01:41:14,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:41:14,058 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-07 01:41:14,058 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-07 01:41:14,058 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-07 01:41:14,059 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:41:14,059 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:41:14,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:41:14,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:41:14,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:41:14,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:41:14,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:41:14,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:41:14,060 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-07 01:41:14,060 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-07 01:41:14,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:41:14,061 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-07 01:41:14,061 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_f462972b-6231-49ea-944c-25c07f3b7bb1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6376f52a263bde0c709cb35a0d040626ae764c5527f8161f54a95df7802768d2 [2021-12-07 01:41:14,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:41:14,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:41:14,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:41:14,315 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:41:14,315 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:41:14,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2021-12-07 01:41:14,357 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/data/75d1cf96d/20d7b0d7949a4f6a8fdb39756141e9c4/FLAG946c82000 [2021-12-07 01:41:14,789 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:41:14,790 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2021-12-07 01:41:14,804 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/data/75d1cf96d/20d7b0d7949a4f6a8fdb39756141e9c4/FLAG946c82000 [2021-12-07 01:41:14,815 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/data/75d1cf96d/20d7b0d7949a4f6a8fdb39756141e9c4 [2021-12-07 01:41:14,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:41:14,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:41:14,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:41:14,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:41:14,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:41:14,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:41:14" (1/1) ... [2021-12-07 01:41:14,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54cdd963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:14, skipping insertion in model container [2021-12-07 01:41:14,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:41:14" (1/1) ... [2021-12-07 01:41:14,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:41:14,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:41:15,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:41:15,069 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-07 01:41:15,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:41:15,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:41:15,108 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:41:15,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:41:15,167 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:41:15,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:15 WrapperNode [2021-12-07 01:41:15,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:41:15,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:41:15,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:41:15,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:41:15,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:15" (1/1) ... [2021-12-07 01:41:15,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:15" (1/1) ... [2021-12-07 01:41:15,207 INFO L137 Inliner]: procedures = 117, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2021-12-07 01:41:15,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:41:15,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:41:15,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:41:15,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:41:15,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:15" (1/1) ... [2021-12-07 01:41:15,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:15" (1/1) ... [2021-12-07 01:41:15,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:15" (1/1) ... [2021-12-07 01:41:15,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:15" (1/1) ... [2021-12-07 01:41:15,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:15" (1/1) ... [2021-12-07 01:41:15,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:15" (1/1) ... [2021-12-07 01:41:15,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:15" (1/1) ... [2021-12-07 01:41:15,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:41:15,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:41:15,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:41:15,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:41:15,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:15" (1/1) ... [2021-12-07 01:41:15,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:41:15,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:41:15,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:41:15,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:41:15,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-07 01:41:15,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 01:41:15,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 01:41:15,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-07 01:41:15,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:41:15,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:41:15,375 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:41:15,376 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:41:15,686 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:41:15,693 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:41:15,693 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-07 01:41:15,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:41:15 BoogieIcfgContainer [2021-12-07 01:41:15,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:41:15,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:41:15,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:41:15,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:41:15,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:41:14" (1/3) ... [2021-12-07 01:41:15,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e5b3d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:41:15, skipping insertion in model container [2021-12-07 01:41:15,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:41:15" (2/3) ... [2021-12-07 01:41:15,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e5b3d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:41:15, skipping insertion in model container [2021-12-07 01:41:15,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:41:15" (3/3) ... [2021-12-07 01:41:15,701 INFO L111 eAbstractionObserver]: Analyzing ICFG array02-alloca-2.i [2021-12-07 01:41:15,706 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:41:15,706 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-12-07 01:41:15,748 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:41:15,753 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 [2021-12-07 01:41:15,753 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-12-07 01:41:15,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 41 states have internal predecessors, (50), 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) [2021-12-07 01:41:15,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-07 01:41:15,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:15,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-07 01:41:15,775 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:15,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:15,780 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2021-12-07 01:41:15,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:15,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443624962] [2021-12-07 01:41:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:15,790 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:15,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:15,792 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:15,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-07 01:41:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:15,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:41:15,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:15,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-07 01:41:15,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:15,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:41:15,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:15,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443624962] [2021-12-07 01:41:15,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443624962] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:41:15,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:41:15,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:41:15,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138036393] [2021-12-07 01:41:15,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:41:15,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:41:15,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:15,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:41:15,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:41:15,945 INFO L87 Difference]: Start difference. First operand has 42 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2021-12-07 01:41:16,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:16,038 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2021-12-07 01:41:16,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:41:16,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2021-12-07 01:41:16,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:16,045 INFO L225 Difference]: With dead ends: 41 [2021-12-07 01:41:16,045 INFO L226 Difference]: Without dead ends: 39 [2021-12-07 01:41:16,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:41:16,049 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 35 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:16,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 32 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:41:16,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-07 01:41:16,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-12-07 01:41:16,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.72) internal successors, (43), 38 states have internal predecessors, (43), 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) [2021-12-07 01:41:16,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-12-07 01:41:16,072 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 6 [2021-12-07 01:41:16,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:16,072 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-12-07 01:41:16,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2021-12-07 01:41:16,073 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-12-07 01:41:16,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-07 01:41:16,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:16,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-07 01:41:16,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:41:16,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:16,275 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:16,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:16,278 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2021-12-07 01:41:16,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:16,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187252473] [2021-12-07 01:41:16,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:16,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:16,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:16,283 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:16,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-07 01:41:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:16,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 01:41:16,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:16,420 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 [2021-12-07 01:41:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:16,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:41:16,440 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:16,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187252473] [2021-12-07 01:41:16,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187252473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:41:16,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:41:16,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:41:16,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834446586] [2021-12-07 01:41:16,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:41:16,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:41:16,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:16,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:41:16,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:41:16,443 INFO L87 Difference]: Start difference. First operand 39 states and 43 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) [2021-12-07 01:41:16,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:16,683 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2021-12-07 01:41:16,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:41:16,684 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 [2021-12-07 01:41:16,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:16,685 INFO L225 Difference]: With dead ends: 79 [2021-12-07 01:41:16,685 INFO L226 Difference]: Without dead ends: 79 [2021-12-07 01:41:16,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:41:16,686 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 44 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:16,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 150 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:41:16,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-12-07 01:41:16,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 42. [2021-12-07 01:41:16,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 41 states have internal predecessors, (46), 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) [2021-12-07 01:41:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-12-07 01:41:16,692 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 6 [2021-12-07 01:41:16,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:16,692 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-12-07 01:41:16,692 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) [2021-12-07 01:41:16,692 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-12-07 01:41:16,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-07 01:41:16,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:16,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-07 01:41:16,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-07 01:41:16,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:16,895 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:16,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:16,897 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2021-12-07 01:41:16,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:16,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268237804] [2021-12-07 01:41:16,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:16,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:16,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:16,903 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:16,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-07 01:41:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:16,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 01:41:16,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:17,002 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 8 treesize of output 7 [2021-12-07 01:41:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:17,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:41:17,051 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:17,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268237804] [2021-12-07 01:41:17,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268237804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:41:17,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:41:17,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:41:17,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030794105] [2021-12-07 01:41:17,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:41:17,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:41:17,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:17,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:41:17,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:41:17,052 INFO L87 Difference]: Start difference. First operand 42 states and 46 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) [2021-12-07 01:41:17,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:17,077 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2021-12-07 01:41:17,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:41:17,078 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 [2021-12-07 01:41:17,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:17,078 INFO L225 Difference]: With dead ends: 44 [2021-12-07 01:41:17,078 INFO L226 Difference]: Without dead ends: 44 [2021-12-07 01:41:17,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:41:17,080 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 1 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:17,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 97 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2021-12-07 01:41:17,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-07 01:41:17,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-12-07 01:41:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 42 states have internal predecessors, (48), 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) [2021-12-07 01:41:17,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2021-12-07 01:41:17,086 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 6 [2021-12-07 01:41:17,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:17,086 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2021-12-07 01:41:17,086 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) [2021-12-07 01:41:17,086 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-12-07 01:41:17,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-07 01:41:17,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:17,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:17,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-07 01:41:17,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:17,289 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:17,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:17,291 INFO L85 PathProgramCache]: Analyzing trace with hash 176742583, now seen corresponding path program 1 times [2021-12-07 01:41:17,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:17,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808278417] [2021-12-07 01:41:17,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:17,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:17,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:17,296 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:17,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-07 01:41:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:17,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:41:17,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:17,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-07 01:41:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:17,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:41:17,413 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:17,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808278417] [2021-12-07 01:41:17,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808278417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:41:17,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:41:17,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:41:17,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441819670] [2021-12-07 01:41:17,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:41:17,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:41:17,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:17,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:41:17,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:41:17,415 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:17,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:17,546 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2021-12-07 01:41:17,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:41:17,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-07 01:41:17,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:17,547 INFO L225 Difference]: With dead ends: 37 [2021-12-07 01:41:17,547 INFO L226 Difference]: Without dead ends: 37 [2021-12-07 01:41:17,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:41:17,548 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 51 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:17,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 29 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:41:17,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-07 01:41:17,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-12-07 01:41:17,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 36 states have internal predecessors, (42), 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) [2021-12-07 01:41:17,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2021-12-07 01:41:17,552 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 8 [2021-12-07 01:41:17,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:17,552 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2021-12-07 01:41:17,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:17,552 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2021-12-07 01:41:17,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-07 01:41:17,552 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:17,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:17,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-07 01:41:17,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:17,754 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:17,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:17,756 INFO L85 PathProgramCache]: Analyzing trace with hash 176742584, now seen corresponding path program 1 times [2021-12-07 01:41:17,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:17,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595096359] [2021-12-07 01:41:17,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:17,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:17,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:17,759 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:17,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-07 01:41:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:17,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-07 01:41:17,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:17,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-07 01:41:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:17,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:41:17,932 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:17,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595096359] [2021-12-07 01:41:17,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595096359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:41:17,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:41:17,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:41:17,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132158261] [2021-12-07 01:41:17,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:41:17,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:41:17,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:17,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:41:17,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:41:17,934 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:17,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:17,961 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-12-07 01:41:17,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:41:17,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-07 01:41:17,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:17,962 INFO L225 Difference]: With dead ends: 40 [2021-12-07 01:41:17,962 INFO L226 Difference]: Without dead ends: 40 [2021-12-07 01:41:17,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:41:17,963 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:17,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 89 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 35 Unchecked, 0.0s Time] [2021-12-07 01:41:17,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-07 01:41:17,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-12-07 01:41:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.4375) internal successors, (46), 39 states have internal predecessors, (46), 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) [2021-12-07 01:41:17,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2021-12-07 01:41:17,968 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 8 [2021-12-07 01:41:17,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:17,968 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2021-12-07 01:41:17,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:17,968 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2021-12-07 01:41:17,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-07 01:41:17,968 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:17,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:17,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-07 01:41:18,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:18,170 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:18,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:18,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1184052306, now seen corresponding path program 1 times [2021-12-07 01:41:18,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:18,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808675751] [2021-12-07 01:41:18,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:18,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:18,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:18,177 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:18,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-07 01:41:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:18,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:41:18,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:18,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:41:18,295 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:18,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808675751] [2021-12-07 01:41:18,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808675751] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:41:18,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:41:18,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:41:18,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906799662] [2021-12-07 01:41:18,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:41:18,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:41:18,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:18,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:41:18,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:41:18,297 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-12-07 01:41:18,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:18,329 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2021-12-07 01:41:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:41:18,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2021-12-07 01:41:18,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:18,330 INFO L225 Difference]: With dead ends: 39 [2021-12-07 01:41:18,330 INFO L226 Difference]: Without dead ends: 39 [2021-12-07 01:41:18,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:41:18,331 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 36 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:18,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 59 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:41:18,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-07 01:41:18,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2021-12-07 01:41:18,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 34 states have internal predecessors, (39), 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) [2021-12-07 01:41:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-12-07 01:41:18,334 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 9 [2021-12-07 01:41:18,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:18,334 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-12-07 01:41:18,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-12-07 01:41:18,335 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-12-07 01:41:18,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-07 01:41:18,335 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:18,335 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:18,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-07 01:41:18,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:18,537 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:18,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:18,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2021-12-07 01:41:18,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:18,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187714762] [2021-12-07 01:41:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:18,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:18,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:18,542 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:18,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-07 01:41:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:18,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:41:18,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:18,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:41:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:18,710 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:18,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187714762] [2021-12-07 01:41:18,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187714762] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:41:18,711 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:41:18,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-07 01:41:18,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53710087] [2021-12-07 01:41:18,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:41:18,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 01:41:18,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:18,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 01:41:18,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:41:18,713 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:18,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:18,775 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2021-12-07 01:41:18,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:41:18,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-07 01:41:18,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:18,777 INFO L225 Difference]: With dead ends: 65 [2021-12-07 01:41:18,777 INFO L226 Difference]: Without dead ends: 65 [2021-12-07 01:41:18,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:41:18,778 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 84 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:18,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 148 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:41:18,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-07 01:41:18,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 41. [2021-12-07 01:41:18,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 40 states have internal predecessors, (45), 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) [2021-12-07 01:41:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-12-07 01:41:18,781 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 10 [2021-12-07 01:41:18,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:18,781 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-12-07 01:41:18,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:18,781 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-12-07 01:41:18,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-07 01:41:18,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:18,782 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:18,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-07 01:41:18,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:18,984 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:18,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:18,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2021-12-07 01:41:18,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:18,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724376118] [2021-12-07 01:41:18,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:18,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:18,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:18,989 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:18,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-07 01:41:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:19,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-07 01:41:19,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:19,080 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 8 treesize of output 7 [2021-12-07 01:41:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:19,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:41:19,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:19,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:19,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724376118] [2021-12-07 01:41:19,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724376118] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:41:19,599 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:41:19,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-12-07 01:41:19,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65554148] [2021-12-07 01:41:19,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:41:19,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:41:19,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:19,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:41:19,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:41:19,600 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:20,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:20,101 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2021-12-07 01:41:20,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 01:41:20,103 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-07 01:41:20,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:20,103 INFO L225 Difference]: With dead ends: 73 [2021-12-07 01:41:20,103 INFO L226 Difference]: Without dead ends: 73 [2021-12-07 01:41:20,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:41:20,104 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 152 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:20,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 88 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 88 Invalid, 0 Unknown, 25 Unchecked, 0.5s Time] [2021-12-07 01:41:20,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-12-07 01:41:20,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 49. [2021-12-07 01:41:20,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 48 states have internal predecessors, (55), 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) [2021-12-07 01:41:20,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2021-12-07 01:41:20,108 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 10 [2021-12-07 01:41:20,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:20,108 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2021-12-07 01:41:20,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:20,108 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2021-12-07 01:41:20,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-07 01:41:20,108 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:20,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:20,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-07 01:41:20,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:20,310 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:20,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:20,310 INFO L85 PathProgramCache]: Analyzing trace with hash -680998147, now seen corresponding path program 1 times [2021-12-07 01:41:20,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:20,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947030922] [2021-12-07 01:41:20,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:20,311 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:20,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:20,313 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:20,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-07 01:41:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:20,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 01:41:20,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:20,424 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 [2021-12-07 01:41:20,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:41:20,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:41:20,471 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:20,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947030922] [2021-12-07 01:41:20,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947030922] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:41:20,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:41:20,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:41:20,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634567472] [2021-12-07 01:41:20,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:41:20,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:41:20,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:20,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:41:20,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:41:20,472 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:20,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:20,757 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2021-12-07 01:41:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:41:20,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-07 01:41:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:20,758 INFO L225 Difference]: With dead ends: 90 [2021-12-07 01:41:20,758 INFO L226 Difference]: Without dead ends: 90 [2021-12-07 01:41:20,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:41:20,759 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 111 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:20,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 99 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 01:41:20,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-12-07 01:41:20,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 63. [2021-12-07 01:41:20,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 55 states have (on average 1.309090909090909) internal successors, (72), 62 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:20,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2021-12-07 01:41:20,763 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 12 [2021-12-07 01:41:20,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:20,763 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2021-12-07 01:41:20,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:20,763 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2021-12-07 01:41:20,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-07 01:41:20,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:20,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:20,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-07 01:41:20,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:20,965 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:20,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:20,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1074025157, now seen corresponding path program 1 times [2021-12-07 01:41:20,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:20,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487442094] [2021-12-07 01:41:20,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:20,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:20,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:20,970 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:20,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-07 01:41:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:21,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-07 01:41:21,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:21,019 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 8 treesize of output 7 [2021-12-07 01:41:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:21,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:41:21,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:21,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:21,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487442094] [2021-12-07 01:41:21,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487442094] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-07 01:41:21,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:41:21,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2021-12-07 01:41:21,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128628555] [2021-12-07 01:41:21,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:41:21,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:41:21,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:21,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:41:21,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:41:21,472 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:21,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:21,801 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2021-12-07 01:41:21,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:41:21,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-07 01:41:21,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:21,802 INFO L225 Difference]: With dead ends: 63 [2021-12-07 01:41:21,802 INFO L226 Difference]: Without dead ends: 63 [2021-12-07 01:41:21,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:41:21,803 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 48 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:21,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 35 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:41:21,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-07 01:41:21,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 46. [2021-12-07 01:41:21,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 45 states have internal predecessors, (53), 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) [2021-12-07 01:41:21,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2021-12-07 01:41:21,806 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 12 [2021-12-07 01:41:21,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:21,806 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2021-12-07 01:41:21,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:21,806 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2021-12-07 01:41:21,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-07 01:41:21,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:21,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:21,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-07 01:41:22,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:22,009 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:22,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:22,010 INFO L85 PathProgramCache]: Analyzing trace with hash 363893421, now seen corresponding path program 1 times [2021-12-07 01:41:22,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:22,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722871031] [2021-12-07 01:41:22,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:22,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:22,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:22,014 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:22,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-07 01:41:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:22,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 01:41:22,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:22,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:41:22,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:41:22,075 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:22,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722871031] [2021-12-07 01:41:22,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722871031] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:41:22,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:41:22,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:41:22,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714459085] [2021-12-07 01:41:22,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:41:22,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:41:22,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:22,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:41:22,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:41:22,076 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-12-07 01:41:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:22,198 INFO L93 Difference]: Finished difference Result 80 states and 91 transitions. [2021-12-07 01:41:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:41:22,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-07 01:41:22,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:22,199 INFO L225 Difference]: With dead ends: 80 [2021-12-07 01:41:22,199 INFO L226 Difference]: Without dead ends: 80 [2021-12-07 01:41:22,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:41:22,200 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:22,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:41:22,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-07 01:41:22,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 48. [2021-12-07 01:41:22,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 47 states have internal predecessors, (55), 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) [2021-12-07 01:41:22,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-12-07 01:41:22,203 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 13 [2021-12-07 01:41:22,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:22,203 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-12-07 01:41:22,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-12-07 01:41:22,203 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-12-07 01:41:22,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-07 01:41:22,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:22,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:22,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-07 01:41:22,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:22,405 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:22,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:22,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1064957999, now seen corresponding path program 1 times [2021-12-07 01:41:22,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:22,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540600067] [2021-12-07 01:41:22,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:22,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:22,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:22,408 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:22,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-07 01:41:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:22,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 01:41:22,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:22,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:41:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:22,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:22,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540600067] [2021-12-07 01:41:22,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540600067] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:41:22,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:41:22,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-12-07 01:41:22,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841453667] [2021-12-07 01:41:22,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:41:22,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 01:41:22,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:22,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 01:41:22,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:41:22,599 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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) [2021-12-07 01:41:22,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:22,860 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2021-12-07 01:41:22,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 01:41:22,861 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-07 01:41:22,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:22,862 INFO L225 Difference]: With dead ends: 82 [2021-12-07 01:41:22,862 INFO L226 Difference]: Without dead ends: 82 [2021-12-07 01:41:22,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-12-07 01:41:22,863 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 147 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:22,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 95 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:41:22,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-12-07 01:41:22,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 46. [2021-12-07 01:41:22,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 45 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:22,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2021-12-07 01:41:22,867 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 13 [2021-12-07 01:41:22,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:22,867 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2021-12-07 01:41:22,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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) [2021-12-07 01:41:22,867 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2021-12-07 01:41:22,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-07 01:41:22,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:22,868 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:22,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-07 01:41:23,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:23,069 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:23,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:23,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2110205631, now seen corresponding path program 1 times [2021-12-07 01:41:23,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:23,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575391871] [2021-12-07 01:41:23,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:23,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:23,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:23,074 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:23,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-07 01:41:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:23,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:41:23,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:41:23,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:41:23,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:41:23,266 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:23,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575391871] [2021-12-07 01:41:23,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575391871] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:41:23,267 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:41:23,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-07 01:41:23,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655056202] [2021-12-07 01:41:23,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:41:23,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 01:41:23,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:23,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 01:41:23,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:41:23,268 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 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) [2021-12-07 01:41:23,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:23,352 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2021-12-07 01:41:23,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:41:23,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 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 18 [2021-12-07 01:41:23,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:23,354 INFO L225 Difference]: With dead ends: 65 [2021-12-07 01:41:23,354 INFO L226 Difference]: Without dead ends: 65 [2021-12-07 01:41:23,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:41:23,355 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 69 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:23,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 80 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:41:23,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-07 01:41:23,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2021-12-07 01:41:23,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 61 states have internal predecessors, (70), 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) [2021-12-07 01:41:23,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2021-12-07 01:41:23,357 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 18 [2021-12-07 01:41:23,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:23,358 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2021-12-07 01:41:23,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 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) [2021-12-07 01:41:23,358 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2021-12-07 01:41:23,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-07 01:41:23,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:23,358 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2021-12-07 01:41:23,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-07 01:41:23,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:23,560 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:23,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:23,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1817992175, now seen corresponding path program 2 times [2021-12-07 01:41:23,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:23,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036486766] [2021-12-07 01:41:23,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:41:23,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:23,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:23,565 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:23,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-07 01:41:23,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:41:23,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:41:23,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-07 01:41:23,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:23,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-07 01:41:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:23,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:41:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:24,739 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:24,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036486766] [2021-12-07 01:41:24,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036486766] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:41:24,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:41:24,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-07 01:41:24,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527371823] [2021-12-07 01:41:24,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:41:24,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-07 01:41:24,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:24,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-07 01:41:24,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-12-07 01:41:24,740 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:26,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:26,957 INFO L93 Difference]: Finished difference Result 183 states and 205 transitions. [2021-12-07 01:41:26,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 01:41:26,959 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-07 01:41:26,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:26,960 INFO L225 Difference]: With dead ends: 183 [2021-12-07 01:41:26,960 INFO L226 Difference]: Without dead ends: 183 [2021-12-07 01:41:26,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2021-12-07 01:41:26,960 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 395 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:26,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 338 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 271 Invalid, 0 Unknown, 48 Unchecked, 1.1s Time] [2021-12-07 01:41:26,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-12-07 01:41:26,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 78. [2021-12-07 01:41:26,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 75 states have (on average 1.2) internal successors, (90), 77 states have internal predecessors, (90), 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) [2021-12-07 01:41:26,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2021-12-07 01:41:26,964 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 18 [2021-12-07 01:41:26,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:26,964 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2021-12-07 01:41:26,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:26,964 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2021-12-07 01:41:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-07 01:41:26,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:26,965 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:26,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-07 01:41:27,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:27,166 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:27,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:27,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1163693311, now seen corresponding path program 1 times [2021-12-07 01:41:27,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:27,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804665172] [2021-12-07 01:41:27,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:27,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:27,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:27,171 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:27,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-07 01:41:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:27,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 01:41:27,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:27,232 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 8 treesize of output 7 [2021-12-07 01:41:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:41:27,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:41:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:41:28,035 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:28,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804665172] [2021-12-07 01:41:28,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804665172] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:41:28,035 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:41:28,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-12-07 01:41:28,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917834592] [2021-12-07 01:41:28,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:41:28,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 01:41:28,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:28,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 01:41:28,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-12-07 01:41:28,036 INFO L87 Difference]: Start difference. First operand 78 states and 90 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:28,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:28,859 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2021-12-07 01:41:28,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 01:41:28,861 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-07 01:41:28,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:28,862 INFO L225 Difference]: With dead ends: 114 [2021-12-07 01:41:28,862 INFO L226 Difference]: Without dead ends: 114 [2021-12-07 01:41:28,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:41:28,863 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 130 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:28,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 114 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 90 Invalid, 0 Unknown, 23 Unchecked, 0.4s Time] [2021-12-07 01:41:28,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-07 01:41:28,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2021-12-07 01:41:28,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 103 states have (on average 1.203883495145631) internal successors, (124), 105 states have internal predecessors, (124), 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) [2021-12-07 01:41:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 124 transitions. [2021-12-07 01:41:28,869 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 124 transitions. Word has length 18 [2021-12-07 01:41:28,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:28,869 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 124 transitions. [2021-12-07 01:41:28,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 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) [2021-12-07 01:41:28,869 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 124 transitions. [2021-12-07 01:41:28,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-07 01:41:28,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:28,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:28,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-07 01:41:29,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:29,072 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:29,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:29,073 INFO L85 PathProgramCache]: Analyzing trace with hash -991865623, now seen corresponding path program 1 times [2021-12-07 01:41:29,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:29,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114221590] [2021-12-07 01:41:29,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:29,074 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:29,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:29,077 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:29,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-07 01:41:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:29,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:41:29,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:29,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:41:29,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:41:29,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:29,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114221590] [2021-12-07 01:41:29,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114221590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:41:29,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:41:29,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:41:29,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714946326] [2021-12-07 01:41:29,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:41:29,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:41:29,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:29,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:41:29,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:41:29,233 INFO L87 Difference]: Start difference. First operand 106 states and 124 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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) [2021-12-07 01:41:29,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:29,252 INFO L93 Difference]: Finished difference Result 142 states and 170 transitions. [2021-12-07 01:41:29,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:41:29,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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 19 [2021-12-07 01:41:29,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:29,253 INFO L225 Difference]: With dead ends: 142 [2021-12-07 01:41:29,253 INFO L226 Difference]: Without dead ends: 138 [2021-12-07 01:41:29,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:41:29,254 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:29,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 77 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2021-12-07 01:41:29,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-12-07 01:41:29,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 129. [2021-12-07 01:41:29,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 126 states have (on average 1.2301587301587302) internal successors, (155), 128 states have internal predecessors, (155), 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) [2021-12-07 01:41:29,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 155 transitions. [2021-12-07 01:41:29,257 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 155 transitions. Word has length 19 [2021-12-07 01:41:29,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:29,257 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 155 transitions. [2021-12-07 01:41:29,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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) [2021-12-07 01:41:29,258 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 155 transitions. [2021-12-07 01:41:29,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-07 01:41:29,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:29,259 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:29,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-07 01:41:29,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:29,460 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:29,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:29,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1147657014, now seen corresponding path program 1 times [2021-12-07 01:41:29,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:29,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158113925] [2021-12-07 01:41:29,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:29,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:29,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:29,465 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:29,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-07 01:41:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:29,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:41:29,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:41:29,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:41:29,706 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:29,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158113925] [2021-12-07 01:41:29,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158113925] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:41:29,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:41:29,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:41:29,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227627674] [2021-12-07 01:41:29,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:41:29,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:41:29,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:29,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:41:29,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:41:29,707 INFO L87 Difference]: Start difference. First operand 129 states and 155 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-12-07 01:41:29,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:29,722 INFO L93 Difference]: Finished difference Result 173 states and 207 transitions. [2021-12-07 01:41:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:41:29,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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 25 [2021-12-07 01:41:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:29,723 INFO L225 Difference]: With dead ends: 173 [2021-12-07 01:41:29,723 INFO L226 Difference]: Without dead ends: 161 [2021-12-07 01:41:29,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:41:29,724 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:29,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 58 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 12 Unchecked, 0.0s Time] [2021-12-07 01:41:29,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-07 01:41:29,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 139. [2021-12-07 01:41:29,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 136 states have (on average 1.2058823529411764) internal successors, (164), 138 states have internal predecessors, (164), 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) [2021-12-07 01:41:29,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2021-12-07 01:41:29,727 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 25 [2021-12-07 01:41:29,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:29,727 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2021-12-07 01:41:29,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-12-07 01:41:29,727 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2021-12-07 01:41:29,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-07 01:41:29,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:29,728 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:29,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-07 01:41:29,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:29,930 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:29,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:29,931 INFO L85 PathProgramCache]: Analyzing trace with hash 989408118, now seen corresponding path program 1 times [2021-12-07 01:41:29,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:29,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941112175] [2021-12-07 01:41:29,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:29,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:29,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:29,932 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:29,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-07 01:41:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:30,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:41:30,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:30,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:41:30,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:41:30,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:30,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941112175] [2021-12-07 01:41:30,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941112175] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:41:30,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:41:30,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:41:30,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032489909] [2021-12-07 01:41:30,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:41:30,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:41:30,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:30,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:41:30,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:41:30,151 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-12-07 01:41:30,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:30,165 INFO L93 Difference]: Finished difference Result 195 states and 234 transitions. [2021-12-07 01:41:30,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:41:30,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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 25 [2021-12-07 01:41:30,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:30,167 INFO L225 Difference]: With dead ends: 195 [2021-12-07 01:41:30,167 INFO L226 Difference]: Without dead ends: 191 [2021-12-07 01:41:30,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:41:30,167 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:30,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 58 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 12 Unchecked, 0.0s Time] [2021-12-07 01:41:30,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-12-07 01:41:30,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 183. [2021-12-07 01:41:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 180 states have (on average 1.2222222222222223) internal successors, (220), 182 states have internal predecessors, (220), 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) [2021-12-07 01:41:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 220 transitions. [2021-12-07 01:41:30,171 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 220 transitions. Word has length 25 [2021-12-07 01:41:30,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:30,171 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 220 transitions. [2021-12-07 01:41:30,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-12-07 01:41:30,171 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 220 transitions. [2021-12-07 01:41:30,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-07 01:41:30,172 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:30,172 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:30,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-07 01:41:30,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:30,373 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:30,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:30,375 INFO L85 PathProgramCache]: Analyzing trace with hash -2063932537, now seen corresponding path program 2 times [2021-12-07 01:41:30,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:30,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404452866] [2021-12-07 01:41:30,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:41:30,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:30,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:30,379 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:30,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-07 01:41:30,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:41:30,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:41:30,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-07 01:41:30,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:30,522 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 8 treesize of output 7 [2021-12-07 01:41:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:41:30,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:41:32,452 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:32,452 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:32,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404452866] [2021-12-07 01:41:32,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404452866] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:41:32,452 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:41:32,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-12-07 01:41:32,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754500529] [2021-12-07 01:41:32,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:41:32,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-07 01:41:32,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:32,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-07 01:41:32,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:41:32,453 INFO L87 Difference]: Start difference. First operand 183 states and 220 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 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) [2021-12-07 01:41:33,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:33,077 INFO L93 Difference]: Finished difference Result 203 states and 241 transitions. [2021-12-07 01:41:33,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 01:41:33,077 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 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 30 [2021-12-07 01:41:33,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:33,078 INFO L225 Difference]: With dead ends: 203 [2021-12-07 01:41:33,078 INFO L226 Difference]: Without dead ends: 200 [2021-12-07 01:41:33,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-12-07 01:41:33,079 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 25 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:33,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 167 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 20 Unchecked, 0.4s Time] [2021-12-07 01:41:33,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-12-07 01:41:33,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 189. [2021-12-07 01:41:33,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 186 states have (on average 1.2204301075268817) internal successors, (227), 188 states have internal predecessors, (227), 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) [2021-12-07 01:41:33,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 227 transitions. [2021-12-07 01:41:33,083 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 227 transitions. Word has length 30 [2021-12-07 01:41:33,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:33,083 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 227 transitions. [2021-12-07 01:41:33,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 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) [2021-12-07 01:41:33,083 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 227 transitions. [2021-12-07 01:41:33,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-07 01:41:33,084 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:33,084 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:33,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-12-07 01:41:33,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:33,285 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:33,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:33,286 INFO L85 PathProgramCache]: Analyzing trace with hash 630576131, now seen corresponding path program 1 times [2021-12-07 01:41:33,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:33,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844482803] [2021-12-07 01:41:33,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:33,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:33,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:33,290 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:33,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-07 01:41:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:33,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-07 01:41:33,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:33,695 INFO L354 Elim1Store]: treesize reduction 442, result has 12.5 percent of original size [2021-12-07 01:41:33,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 260 treesize of output 93 [2021-12-07 01:41:33,985 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-12-07 01:41:33,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 173 treesize of output 68 [2021-12-07 01:41:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 01:41:34,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:41:34,048 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:34,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844482803] [2021-12-07 01:41:34,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844482803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:41:34,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:41:34,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 01:41:34,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382720680] [2021-12-07 01:41:34,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:41:34,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 01:41:34,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:34,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 01:41:34,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:41:34,049 INFO L87 Difference]: Start difference. First operand 189 states and 227 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 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) [2021-12-07 01:41:34,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:34,217 INFO L93 Difference]: Finished difference Result 187 states and 223 transitions. [2021-12-07 01:41:34,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 01:41:34,218 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 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 31 [2021-12-07 01:41:34,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:34,219 INFO L225 Difference]: With dead ends: 187 [2021-12-07 01:41:34,219 INFO L226 Difference]: Without dead ends: 169 [2021-12-07 01:41:34,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:41:34,220 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:34,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 101 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time] [2021-12-07 01:41:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-07 01:41:34,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-12-07 01:41:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 166 states have (on average 1.2289156626506024) internal successors, (204), 168 states have internal predecessors, (204), 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) [2021-12-07 01:41:34,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 204 transitions. [2021-12-07 01:41:34,223 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 204 transitions. Word has length 31 [2021-12-07 01:41:34,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:34,223 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 204 transitions. [2021-12-07 01:41:34,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 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) [2021-12-07 01:41:34,224 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 204 transitions. [2021-12-07 01:41:34,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-07 01:41:34,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:34,224 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2021-12-07 01:41:34,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-07 01:41:34,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:34,425 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:34,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:34,427 INFO L85 PathProgramCache]: Analyzing trace with hash -563143139, now seen corresponding path program 3 times [2021-12-07 01:41:34,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:34,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40854914] [2021-12-07 01:41:34,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:41:34,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:34,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:34,431 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:34,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-07 01:41:34,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-12-07 01:41:34,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:41:34,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 01:41:34,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:34,592 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 8 treesize of output 7 [2021-12-07 01:41:35,038 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:35,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:41:37,090 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:37,090 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:37,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40854914] [2021-12-07 01:41:37,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40854914] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:41:37,090 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:41:37,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-12-07 01:41:37,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471169283] [2021-12-07 01:41:37,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:41:37,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-07 01:41:37,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:37,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-07 01:41:37,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-12-07 01:41:37,092 INFO L87 Difference]: Start difference. First operand 169 states and 204 transitions. Second operand has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:48,364 INFO L93 Difference]: Finished difference Result 1844 states and 2231 transitions. [2021-12-07 01:41:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-07 01:41:48,365 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-07 01:41:48,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:48,372 INFO L225 Difference]: With dead ends: 1844 [2021-12-07 01:41:48,372 INFO L226 Difference]: Without dead ends: 1844 [2021-12-07 01:41:48,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=522, Invalid=1200, Unknown=0, NotChecked=0, Total=1722 [2021-12-07 01:41:48,373 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 1633 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:48,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1633 Valid, 1101 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 883 Invalid, 0 Unknown, 101 Unchecked, 3.3s Time] [2021-12-07 01:41:48,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2021-12-07 01:41:48,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 201. [2021-12-07 01:41:48,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 198 states have (on average 1.2323232323232323) internal successors, (244), 200 states have internal predecessors, (244), 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) [2021-12-07 01:41:48,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 244 transitions. [2021-12-07 01:41:48,385 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 244 transitions. Word has length 34 [2021-12-07 01:41:48,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:48,385 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 244 transitions. [2021-12-07 01:41:48,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:48,385 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 244 transitions. [2021-12-07 01:41:48,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-07 01:41:48,386 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:48,386 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:48,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-12-07 01:41:48,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:48,587 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:48,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:48,588 INFO L85 PathProgramCache]: Analyzing trace with hash 913185738, now seen corresponding path program 3 times [2021-12-07 01:41:48,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:48,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435236570] [2021-12-07 01:41:48,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:41:48,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:48,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:48,592 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:48,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-07 01:41:48,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-07 01:41:48,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:41:48,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-07 01:41:48,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:48,825 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 8 treesize of output 7 [2021-12-07 01:41:49,211 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:49,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:41:52,260 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:41:52,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:52,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435236570] [2021-12-07 01:41:52,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435236570] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:41:52,260 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:41:52,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-12-07 01:41:52,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772328607] [2021-12-07 01:41:52,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:41:52,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-07 01:41:52,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:52,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-07 01:41:52,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-12-07 01:41:52,262 INFO L87 Difference]: Start difference. First operand 201 states and 244 transitions. Second operand has 20 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:58,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:58,493 INFO L93 Difference]: Finished difference Result 388 states and 456 transitions. [2021-12-07 01:41:58,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-07 01:41:58,495 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-07 01:41:58,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:58,496 INFO L225 Difference]: With dead ends: 388 [2021-12-07 01:41:58,496 INFO L226 Difference]: Without dead ends: 344 [2021-12-07 01:41:58,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=410, Invalid=1150, Unknown=0, NotChecked=0, Total=1560 [2021-12-07 01:41:58,498 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 1009 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:58,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1009 Valid, 305 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-07 01:41:58,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-12-07 01:41:58,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 289. [2021-12-07 01:41:58,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 286 states have (on average 1.2132867132867133) internal successors, (347), 288 states have internal predecessors, (347), 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) [2021-12-07 01:41:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 347 transitions. [2021-12-07 01:41:58,502 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 347 transitions. Word has length 34 [2021-12-07 01:41:58,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:58,503 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 347 transitions. [2021-12-07 01:41:58,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:41:58,503 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 347 transitions. [2021-12-07 01:41:58,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-07 01:41:58,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:58,503 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:58,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-12-07 01:41:58,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:58,704 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:58,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:58,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1523871233, now seen corresponding path program 1 times [2021-12-07 01:41:58,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:58,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712913602] [2021-12-07 01:41:58,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:41:58,705 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:58,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:58,705 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:58,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-07 01:41:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:41:58,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-07 01:41:58,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:41:58,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:41:59,073 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:41:59,073 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:59,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712913602] [2021-12-07 01:41:59,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712913602] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:41:59,073 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:41:59,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-12-07 01:41:59,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444985668] [2021-12-07 01:41:59,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:41:59,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-07 01:41:59,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:59,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-07 01:41:59,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-07 01:41:59,074 INFO L87 Difference]: Start difference. First operand 289 states and 347 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 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) [2021-12-07 01:41:59,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:59,380 INFO L93 Difference]: Finished difference Result 313 states and 372 transitions. [2021-12-07 01:41:59,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 01:41:59,381 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 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 37 [2021-12-07 01:41:59,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:59,382 INFO L225 Difference]: With dead ends: 313 [2021-12-07 01:41:59,382 INFO L226 Difference]: Without dead ends: 289 [2021-12-07 01:41:59,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-12-07 01:41:59,383 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 95 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:59,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 136 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 01:41:59,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-12-07 01:41:59,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-12-07 01:41:59,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 286 states have (on average 1.2097902097902098) internal successors, (346), 288 states have internal predecessors, (346), 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) [2021-12-07 01:41:59,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 346 transitions. [2021-12-07 01:41:59,388 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 346 transitions. Word has length 37 [2021-12-07 01:41:59,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:59,388 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 346 transitions. [2021-12-07 01:41:59,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 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) [2021-12-07 01:41:59,388 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 346 transitions. [2021-12-07 01:41:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-07 01:41:59,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:59,388 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:59,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-12-07 01:41:59,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:59,589 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:59,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:59,589 INFO L85 PathProgramCache]: Analyzing trace with hash 599848030, now seen corresponding path program 2 times [2021-12-07 01:41:59,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:59,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745952173] [2021-12-07 01:41:59,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:41:59,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:59,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:59,590 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:59,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-07 01:41:59,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 01:41:59,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:41:59,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:41:59,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:41:59,785 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-07 01:41:59,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:41:59,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:41:59,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745952173] [2021-12-07 01:41:59,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745952173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:41:59,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:41:59,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:41:59,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367355556] [2021-12-07 01:41:59,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:41:59,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:41:59,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:41:59,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:41:59,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:41:59,786 INFO L87 Difference]: Start difference. First operand 289 states and 346 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-12-07 01:41:59,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:41:59,791 INFO L93 Difference]: Finished difference Result 288 states and 345 transitions. [2021-12-07 01:41:59,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:41:59,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 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 41 [2021-12-07 01:41:59,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:41:59,792 INFO L225 Difference]: With dead ends: 288 [2021-12-07 01:41:59,793 INFO L226 Difference]: Without dead ends: 240 [2021-12-07 01:41:59,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:41:59,793 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:41:59,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 41 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2021-12-07 01:41:59,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-12-07 01:41:59,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 143. [2021-12-07 01:41:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 141 states have (on average 1.1914893617021276) internal successors, (168), 142 states have internal predecessors, (168), 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) [2021-12-07 01:41:59,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2021-12-07 01:41:59,796 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 41 [2021-12-07 01:41:59,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:41:59,796 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2021-12-07 01:41:59,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-12-07 01:41:59,797 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2021-12-07 01:41:59,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-07 01:41:59,797 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:41:59,797 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:41:59,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-12-07 01:41:59,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:41:59,998 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:41:59,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:41:59,998 INFO L85 PathProgramCache]: Analyzing trace with hash -720923439, now seen corresponding path program 4 times [2021-12-07 01:41:59,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:41:59,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724981792] [2021-12-07 01:41:59,998 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:41:59,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:41:59,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:41:59,999 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:41:59,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-07 01:42:00,061 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:42:00,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:42:00,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-07 01:42:00,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:42:00,077 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 8 treesize of output 7 [2021-12-07 01:42:00,527 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:42:00,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:42:03,321 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:42:03,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:42:03,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724981792] [2021-12-07 01:42:03,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724981792] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:42:03,321 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:42:03,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2021-12-07 01:42:03,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311654382] [2021-12-07 01:42:03,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:42:03,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-07 01:42:03,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:42:03,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-07 01:42:03,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2021-12-07 01:42:03,322 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 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) [2021-12-07 01:42:04,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:42:04,509 INFO L93 Difference]: Finished difference Result 174 states and 204 transitions. [2021-12-07 01:42:04,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 01:42:04,510 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 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 44 [2021-12-07 01:42:04,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:42:04,511 INFO L225 Difference]: With dead ends: 174 [2021-12-07 01:42:04,511 INFO L226 Difference]: Without dead ends: 171 [2021-12-07 01:42:04,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2021-12-07 01:42:04,512 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 45 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:42:04,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 302 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 195 Invalid, 0 Unknown, 26 Unchecked, 1.0s Time] [2021-12-07 01:42:04,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-12-07 01:42:04,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 161. [2021-12-07 01:42:04,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 159 states have (on average 1.20125786163522) internal successors, (191), 160 states have internal predecessors, (191), 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) [2021-12-07 01:42:04,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 191 transitions. [2021-12-07 01:42:04,515 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 191 transitions. Word has length 44 [2021-12-07 01:42:04,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:42:04,515 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 191 transitions. [2021-12-07 01:42:04,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 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) [2021-12-07 01:42:04,515 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 191 transitions. [2021-12-07 01:42:04,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-07 01:42:04,515 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:42:04,516 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:42:04,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-12-07 01:42:04,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:42:04,717 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:42:04,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:42:04,718 INFO L85 PathProgramCache]: Analyzing trace with hash 82156500, now seen corresponding path program 5 times [2021-12-07 01:42:04,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:42:04,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549161176] [2021-12-07 01:42:04,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 01:42:04,720 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:42:04,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:42:04,722 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:42:04,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-07 01:42:04,855 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-07 01:42:04,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:42:04,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-07 01:42:04,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:42:04,872 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 8 treesize of output 7 [2021-12-07 01:42:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:42:05,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:42:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:42:09,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:42:09,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549161176] [2021-12-07 01:42:09,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549161176] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:42:09,309 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:42:09,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2021-12-07 01:42:09,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975365170] [2021-12-07 01:42:09,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:42:09,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-07 01:42:09,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:42:09,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-07 01:42:09,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2021-12-07 01:42:09,310 INFO L87 Difference]: Start difference. First operand 161 states and 191 transitions. Second operand has 27 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 27 states have internal predecessors, (94), 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) [2021-12-07 01:42:12,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:42:21,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:42:21,873 INFO L93 Difference]: Finished difference Result 345 states and 405 transitions. [2021-12-07 01:42:21,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-07 01:42:21,874 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 27 states have internal predecessors, (94), 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 48 [2021-12-07 01:42:21,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:42:21,875 INFO L225 Difference]: With dead ends: 345 [2021-12-07 01:42:21,875 INFO L226 Difference]: Without dead ends: 345 [2021-12-07 01:42:21,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=705, Invalid=2487, Unknown=0, NotChecked=0, Total=3192 [2021-12-07 01:42:21,877 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 1431 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:42:21,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 577 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 678 Invalid, 0 Unknown, 66 Unchecked, 3.7s Time] [2021-12-07 01:42:21,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-07 01:42:21,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 251. [2021-12-07 01:42:21,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 249 states have (on average 1.1887550200803212) internal successors, (296), 250 states have internal predecessors, (296), 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) [2021-12-07 01:42:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 296 transitions. [2021-12-07 01:42:21,881 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 296 transitions. Word has length 48 [2021-12-07 01:42:21,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:42:21,881 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 296 transitions. [2021-12-07 01:42:21,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 27 states have internal predecessors, (94), 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) [2021-12-07 01:42:21,881 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 296 transitions. [2021-12-07 01:42:21,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-07 01:42:21,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:42:21,882 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:42:21,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-12-07 01:42:22,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:42:22,083 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:42:22,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:42:22,084 INFO L85 PathProgramCache]: Analyzing trace with hash -265635160, now seen corresponding path program 1 times [2021-12-07 01:42:22,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:42:22,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531316008] [2021-12-07 01:42:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:42:22,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:42:22,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:42:22,088 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:42:22,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-12-07 01:42:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:42:22,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:42:22,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:42:22,220 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 8 treesize of output 7 [2021-12-07 01:42:22,746 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 44 proven. 43 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:42:22,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:42:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:42:26,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:42:26,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531316008] [2021-12-07 01:42:26,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531316008] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:42:26,490 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:42:26,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:42:26,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157248821] [2021-12-07 01:42:26,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:42:26,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:42:26,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:42:26,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:42:26,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:42:26,491 INFO L87 Difference]: Start difference. First operand 251 states and 296 transitions. Second operand has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:42:27,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:42:27,906 INFO L93 Difference]: Finished difference Result 274 states and 319 transitions. [2021-12-07 01:42:27,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 01:42:27,908 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-12-07 01:42:27,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:42:27,909 INFO L225 Difference]: With dead ends: 274 [2021-12-07 01:42:27,909 INFO L226 Difference]: Without dead ends: 263 [2021-12-07 01:42:27,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2021-12-07 01:42:27,909 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 57 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:42:27,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 371 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 230 Invalid, 0 Unknown, 63 Unchecked, 1.1s Time] [2021-12-07 01:42:27,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-12-07 01:42:27,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 249. [2021-12-07 01:42:27,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 247 states have (on average 1.1862348178137652) internal successors, (293), 248 states have internal predecessors, (293), 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) [2021-12-07 01:42:27,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 293 transitions. [2021-12-07 01:42:27,915 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 293 transitions. Word has length 56 [2021-12-07 01:42:27,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:42:27,915 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 293 transitions. [2021-12-07 01:42:27,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:42:27,915 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 293 transitions. [2021-12-07 01:42:27,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-07 01:42:27,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:42:27,916 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:42:27,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-12-07 01:42:28,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:42:28,117 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:42:28,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:42:28,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1427161704, now seen corresponding path program 1 times [2021-12-07 01:42:28,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:42:28,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142957550] [2021-12-07 01:42:28,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:42:28,118 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:42:28,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:42:28,118 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:42:28,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-07 01:42:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:42:28,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:42:28,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:42:28,215 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 8 treesize of output 7 [2021-12-07 01:42:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 44 proven. 44 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:42:28,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:42:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:42:32,512 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:42:32,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142957550] [2021-12-07 01:42:32,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142957550] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:42:32,513 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:42:32,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:42:32,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412122359] [2021-12-07 01:42:32,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:42:32,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:42:32,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:42:32,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:42:32,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:42:32,514 INFO L87 Difference]: Start difference. First operand 249 states and 293 transitions. Second operand has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:42:33,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:42:33,974 INFO L93 Difference]: Finished difference Result 273 states and 317 transitions. [2021-12-07 01:42:33,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 01:42:33,976 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-12-07 01:42:33,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:42:33,977 INFO L225 Difference]: With dead ends: 273 [2021-12-07 01:42:33,977 INFO L226 Difference]: Without dead ends: 258 [2021-12-07 01:42:33,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2021-12-07 01:42:33,977 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 57 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:42:33,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 289 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 197 Invalid, 0 Unknown, 14 Unchecked, 1.1s Time] [2021-12-07 01:42:33,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-12-07 01:42:33,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 245. [2021-12-07 01:42:33,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 243 states have (on average 1.1851851851851851) internal successors, (288), 244 states have internal predecessors, (288), 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) [2021-12-07 01:42:33,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 288 transitions. [2021-12-07 01:42:33,982 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 288 transitions. Word has length 56 [2021-12-07 01:42:33,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:42:33,982 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 288 transitions. [2021-12-07 01:42:33,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:42:33,982 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 288 transitions. [2021-12-07 01:42:33,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-07 01:42:33,983 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:42:33,983 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:42:33,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-12-07 01:42:34,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:42:34,184 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:42:34,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:42:34,184 INFO L85 PathProgramCache]: Analyzing trace with hash -388791448, now seen corresponding path program 2 times [2021-12-07 01:42:34,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:42:34,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936716954] [2021-12-07 01:42:34,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:42:34,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:42:34,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:42:34,186 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:42:34,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-12-07 01:42:34,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:42:34,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:42:34,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:42:34,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:42:34,281 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 8 treesize of output 7 [2021-12-07 01:42:34,811 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 44 proven. 43 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:42:34,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:42:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:42:38,529 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:42:38,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936716954] [2021-12-07 01:42:38,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936716954] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:42:38,530 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:42:38,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:42:38,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169093358] [2021-12-07 01:42:38,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:42:38,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:42:38,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:42:38,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:42:38,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:42:38,531 INFO L87 Difference]: Start difference. First operand 245 states and 288 transitions. Second operand has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:42:40,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:42:40,398 INFO L93 Difference]: Finished difference Result 308 states and 360 transitions. [2021-12-07 01:42:40,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-07 01:42:40,400 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-12-07 01:42:40,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:42:40,401 INFO L225 Difference]: With dead ends: 308 [2021-12-07 01:42:40,401 INFO L226 Difference]: Without dead ends: 305 [2021-12-07 01:42:40,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2021-12-07 01:42:40,402 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 74 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:42:40,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 420 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 220 Invalid, 0 Unknown, 14 Unchecked, 1.2s Time] [2021-12-07 01:42:40,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-12-07 01:42:40,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 281. [2021-12-07 01:42:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 279 states have (on average 1.1971326164874552) internal successors, (334), 280 states have internal predecessors, (334), 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) [2021-12-07 01:42:40,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 334 transitions. [2021-12-07 01:42:40,406 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 334 transitions. Word has length 56 [2021-12-07 01:42:40,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:42:40,406 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 334 transitions. [2021-12-07 01:42:40,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:42:40,406 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 334 transitions. [2021-12-07 01:42:40,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-07 01:42:40,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:42:40,406 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:42:40,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-12-07 01:42:40,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:42:40,608 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:42:40,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:42:40,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2122007768, now seen corresponding path program 2 times [2021-12-07 01:42:40,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:42:40,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299229530] [2021-12-07 01:42:40,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:42:40,611 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:42:40,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:42:40,613 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:42:40,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-07 01:42:40,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:42:40,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:42:40,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:42:40,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:42:40,837 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 8 treesize of output 7 [2021-12-07 01:42:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 44 proven. 44 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:42:41,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:42:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:42:44,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:42:44,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299229530] [2021-12-07 01:42:44,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299229530] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:42:44,989 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:42:44,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:42:44,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862657355] [2021-12-07 01:42:44,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:42:44,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:42:44,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:42:44,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:42:44,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:42:44,991 INFO L87 Difference]: Start difference. First operand 281 states and 334 transitions. Second operand has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:42:46,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:42:46,950 INFO L93 Difference]: Finished difference Result 348 states and 410 transitions. [2021-12-07 01:42:46,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-07 01:42:46,951 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-12-07 01:42:46,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:42:46,952 INFO L225 Difference]: With dead ends: 348 [2021-12-07 01:42:46,952 INFO L226 Difference]: Without dead ends: 345 [2021-12-07 01:42:46,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2021-12-07 01:42:46,953 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 82 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:42:46,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 495 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 275 Invalid, 0 Unknown, 54 Unchecked, 1.3s Time] [2021-12-07 01:42:46,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-07 01:42:46,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 303. [2021-12-07 01:42:46,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 301 states have (on average 1.1926910299003322) internal successors, (359), 302 states have internal predecessors, (359), 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) [2021-12-07 01:42:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 359 transitions. [2021-12-07 01:42:46,957 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 359 transitions. Word has length 56 [2021-12-07 01:42:46,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:42:46,957 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 359 transitions. [2021-12-07 01:42:46,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:42:46,958 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 359 transitions. [2021-12-07 01:42:46,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-07 01:42:46,958 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:42:46,958 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:42:46,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-12-07 01:42:47,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:42:47,160 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:42:47,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:42:47,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1316142120, now seen corresponding path program 3 times [2021-12-07 01:42:47,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:42:47,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961937252] [2021-12-07 01:42:47,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:42:47,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:42:47,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:42:47,164 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:42:47,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-12-07 01:42:47,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-07 01:42:47,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:42:47,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-07 01:42:47,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:42:47,381 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 8 treesize of output 7 [2021-12-07 01:42:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 69 proven. 19 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-07 01:42:49,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:42:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 33 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-07 01:42:55,553 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:42:55,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961937252] [2021-12-07 01:42:55,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961937252] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:42:55,553 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:42:55,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-12-07 01:42:55,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296653720] [2021-12-07 01:42:55,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:42:55,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-07 01:42:55,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:42:55,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-07 01:42:55,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2021-12-07 01:42:55,554 INFO L87 Difference]: Start difference. First operand 303 states and 359 transitions. Second operand has 28 states, 28 states have (on average 3.5) internal successors, (98), 28 states have internal predecessors, (98), 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) [2021-12-07 01:42:56,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:42:56,182 INFO L93 Difference]: Finished difference Result 424 states and 502 transitions. [2021-12-07 01:42:56,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 01:42:56,182 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.5) internal successors, (98), 28 states have internal predecessors, (98), 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 56 [2021-12-07 01:42:56,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:42:56,184 INFO L225 Difference]: With dead ends: 424 [2021-12-07 01:42:56,184 INFO L226 Difference]: Without dead ends: 418 [2021-12-07 01:42:56,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2021-12-07 01:42:56,185 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 52 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 01:42:56,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 278 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 149 Unchecked, 0.5s Time] [2021-12-07 01:42:56,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-12-07 01:42:56,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 372. [2021-12-07 01:42:56,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 370 states have (on average 1.2027027027027026) internal successors, (445), 371 states have internal predecessors, (445), 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) [2021-12-07 01:42:56,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 445 transitions. [2021-12-07 01:42:56,189 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 445 transitions. Word has length 56 [2021-12-07 01:42:56,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:42:56,190 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 445 transitions. [2021-12-07 01:42:56,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.5) internal successors, (98), 28 states have internal predecessors, (98), 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) [2021-12-07 01:42:56,190 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 445 transitions. [2021-12-07 01:42:56,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-07 01:42:56,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:42:56,190 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:42:56,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-12-07 01:42:56,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:42:56,392 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:42:56,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:42:56,393 INFO L85 PathProgramCache]: Analyzing trace with hash 30090216, now seen corresponding path program 3 times [2021-12-07 01:42:56,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:42:56,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392071108] [2021-12-07 01:42:56,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:42:56,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:42:56,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:42:56,397 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:42:56,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-12-07 01:42:56,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-07 01:42:56,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:42:56,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-07 01:42:56,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:42:56,630 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 8 treesize of output 7 [2021-12-07 01:42:58,500 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 69 proven. 19 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:42:58,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 33 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:43:07,502 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:43:07,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392071108] [2021-12-07 01:43:07,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392071108] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:43:07,503 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:43:07,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-12-07 01:43:07,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756600095] [2021-12-07 01:43:07,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:07,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-07 01:43:07,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:43:07,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-07 01:43:07,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2021-12-07 01:43:07,504 INFO L87 Difference]: Start difference. First operand 372 states and 445 transitions. Second operand has 28 states, 28 states have (on average 3.5) internal successors, (98), 28 states have internal predecessors, (98), 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) [2021-12-07 01:43:08,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:08,177 INFO L93 Difference]: Finished difference Result 484 states and 573 transitions. [2021-12-07 01:43:08,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 01:43:08,179 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.5) internal successors, (98), 28 states have internal predecessors, (98), 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 56 [2021-12-07 01:43:08,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:08,181 INFO L225 Difference]: With dead ends: 484 [2021-12-07 01:43:08,181 INFO L226 Difference]: Without dead ends: 478 [2021-12-07 01:43:08,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2021-12-07 01:43:08,182 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 58 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:08,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 257 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 97 Unchecked, 0.6s Time] [2021-12-07 01:43:08,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-12-07 01:43:08,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 428. [2021-12-07 01:43:08,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 426 states have (on average 1.199530516431925) internal successors, (511), 427 states have internal predecessors, (511), 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) [2021-12-07 01:43:08,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 511 transitions. [2021-12-07 01:43:08,187 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 511 transitions. Word has length 56 [2021-12-07 01:43:08,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:08,187 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 511 transitions. [2021-12-07 01:43:08,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.5) internal successors, (98), 28 states have internal predecessors, (98), 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) [2021-12-07 01:43:08,188 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 511 transitions. [2021-12-07 01:43:08,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-07 01:43:08,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:08,188 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:08,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-12-07 01:43:08,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:43:08,390 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:43:08,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:08,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1169143877, now seen corresponding path program 4 times [2021-12-07 01:43:08,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:43:08,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316599665] [2021-12-07 01:43:08,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:43:08,393 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:43:08,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:43:08,395 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:43:08,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-12-07 01:43:08,501 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:43:08,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:43:08,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:43:08,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:08,528 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 8 treesize of output 7 [2021-12-07 01:43:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 42 proven. 61 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:43:09,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:14,396 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:43:14,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:43:14,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316599665] [2021-12-07 01:43:14,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316599665] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:43:14,396 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:43:14,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:43:14,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476820871] [2021-12-07 01:43:14,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:14,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:43:14,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:43:14,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:43:14,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:43:14,398 INFO L87 Difference]: Start difference. First operand 428 states and 511 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 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) [2021-12-07 01:43:16,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:16,291 INFO L93 Difference]: Finished difference Result 459 states and 544 transitions. [2021-12-07 01:43:16,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 01:43:16,293 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-07 01:43:16,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:16,294 INFO L225 Difference]: With dead ends: 459 [2021-12-07 01:43:16,294 INFO L226 Difference]: Without dead ends: 458 [2021-12-07 01:43:16,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-12-07 01:43:16,295 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 54 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:16,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 398 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 230 Invalid, 0 Unknown, 50 Unchecked, 1.4s Time] [2021-12-07 01:43:16,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-12-07 01:43:16,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 444. [2021-12-07 01:43:16,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 442 states have (on average 1.1968325791855203) internal successors, (529), 443 states have internal predecessors, (529), 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) [2021-12-07 01:43:16,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 529 transitions. [2021-12-07 01:43:16,300 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 529 transitions. Word has length 62 [2021-12-07 01:43:16,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:16,300 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 529 transitions. [2021-12-07 01:43:16,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 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) [2021-12-07 01:43:16,301 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 529 transitions. [2021-12-07 01:43:16,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-07 01:43:16,301 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:16,301 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:16,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-12-07 01:43:16,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:43:16,502 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:43:16,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:16,503 INFO L85 PathProgramCache]: Analyzing trace with hash 523652987, now seen corresponding path program 1 times [2021-12-07 01:43:16,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:43:16,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326294643] [2021-12-07 01:43:16,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:43:16,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:43:16,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:43:16,507 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:43:16,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-12-07 01:43:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:43:16,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:43:16,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:16,623 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 8 treesize of output 7 [2021-12-07 01:43:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:43:17,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:43:22,215 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:43:22,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326294643] [2021-12-07 01:43:22,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326294643] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:43:22,215 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:43:22,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:43:22,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374808690] [2021-12-07 01:43:22,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:22,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:43:22,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:43:22,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:43:22,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:43:22,217 INFO L87 Difference]: Start difference. First operand 444 states and 529 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 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) [2021-12-07 01:43:25,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:25,063 INFO L93 Difference]: Finished difference Result 499 states and 590 transitions. [2021-12-07 01:43:25,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-07 01:43:25,064 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-07 01:43:25,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:25,066 INFO L225 Difference]: With dead ends: 499 [2021-12-07 01:43:25,066 INFO L226 Difference]: Without dead ends: 498 [2021-12-07 01:43:25,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2021-12-07 01:43:25,067 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 83 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:25,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 455 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 237 Invalid, 0 Unknown, 21 Unchecked, 1.5s Time] [2021-12-07 01:43:25,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-12-07 01:43:25,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 472. [2021-12-07 01:43:25,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 470 states have (on average 1.2) internal successors, (564), 471 states have internal predecessors, (564), 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) [2021-12-07 01:43:25,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 564 transitions. [2021-12-07 01:43:25,073 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 564 transitions. Word has length 62 [2021-12-07 01:43:25,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:25,074 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 564 transitions. [2021-12-07 01:43:25,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 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) [2021-12-07 01:43:25,074 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 564 transitions. [2021-12-07 01:43:25,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-07 01:43:25,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:25,075 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:25,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-12-07 01:43:25,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:43:25,276 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:43:25,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:25,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1839771515, now seen corresponding path program 2 times [2021-12-07 01:43:25,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:43:25,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374590707] [2021-12-07 01:43:25,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:43:25,279 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:43:25,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:43:25,281 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:43:25,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-12-07 01:43:25,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:43:25,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:43:25,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:43:25,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:25,454 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 8 treesize of output 7 [2021-12-07 01:43:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:43:26,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:43:31,008 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:43:31,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374590707] [2021-12-07 01:43:31,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374590707] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:43:31,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:43:31,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:43:31,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528743340] [2021-12-07 01:43:31,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:31,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:43:31,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:43:31,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:43:31,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:43:31,009 INFO L87 Difference]: Start difference. First operand 472 states and 564 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 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) [2021-12-07 01:43:33,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:33,959 INFO L93 Difference]: Finished difference Result 578 states and 685 transitions. [2021-12-07 01:43:33,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-07 01:43:33,960 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-07 01:43:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:33,962 INFO L225 Difference]: With dead ends: 578 [2021-12-07 01:43:33,962 INFO L226 Difference]: Without dead ends: 577 [2021-12-07 01:43:33,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2021-12-07 01:43:33,963 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 60 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:33,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 636 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 259 Invalid, 0 Unknown, 83 Unchecked, 1.6s Time] [2021-12-07 01:43:33,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-12-07 01:43:33,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 529. [2021-12-07 01:43:33,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 527 states have (on average 1.1973434535104364) internal successors, (631), 528 states have internal predecessors, (631), 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) [2021-12-07 01:43:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 631 transitions. [2021-12-07 01:43:33,971 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 631 transitions. Word has length 62 [2021-12-07 01:43:33,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:33,972 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 631 transitions. [2021-12-07 01:43:33,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 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) [2021-12-07 01:43:33,972 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 631 transitions. [2021-12-07 01:43:33,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-07 01:43:33,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:33,973 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:33,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-12-07 01:43:34,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:43:34,174 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:43:34,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:34,175 INFO L85 PathProgramCache]: Analyzing trace with hash -762398917, now seen corresponding path program 4 times [2021-12-07 01:43:34,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:43:34,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411385340] [2021-12-07 01:43:34,177 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:43:34,177 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:43:34,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:43:34,179 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:43:34,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-12-07 01:43:34,366 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:43:34,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:43:34,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:43:34,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:34,395 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 8 treesize of output 7 [2021-12-07 01:43:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 63 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:43:35,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:43:39,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:43:39,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411385340] [2021-12-07 01:43:39,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411385340] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:43:39,983 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:43:39,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:43:39,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649791804] [2021-12-07 01:43:39,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:39,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:43:39,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:43:39,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:43:39,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:43:39,984 INFO L87 Difference]: Start difference. First operand 529 states and 631 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 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) [2021-12-07 01:43:45,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:45,869 INFO L93 Difference]: Finished difference Result 594 states and 701 transitions. [2021-12-07 01:43:45,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-07 01:43:45,870 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-07 01:43:45,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:45,872 INFO L225 Difference]: With dead ends: 594 [2021-12-07 01:43:45,872 INFO L226 Difference]: Without dead ends: 587 [2021-12-07 01:43:45,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=160, Invalid=1100, Unknown=0, NotChecked=0, Total=1260 [2021-12-07 01:43:45,873 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 74 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:45,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 523 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 245 Invalid, 0 Unknown, 57 Unchecked, 1.7s Time] [2021-12-07 01:43:45,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-12-07 01:43:45,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 553. [2021-12-07 01:43:45,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 551 states have (on average 1.1978221415607986) internal successors, (660), 552 states have internal predecessors, (660), 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) [2021-12-07 01:43:45,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 660 transitions. [2021-12-07 01:43:45,880 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 660 transitions. Word has length 62 [2021-12-07 01:43:45,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:45,880 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 660 transitions. [2021-12-07 01:43:45,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 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) [2021-12-07 01:43:45,880 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 660 transitions. [2021-12-07 01:43:45,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-07 01:43:45,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:45,881 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:45,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-12-07 01:43:46,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:43:46,082 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:43:46,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:46,083 INFO L85 PathProgramCache]: Analyzing trace with hash 911339643, now seen corresponding path program 5 times [2021-12-07 01:43:46,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:43:46,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961158034] [2021-12-07 01:43:46,084 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 01:43:46,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:43:46,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:43:46,085 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:43:46,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-12-07 01:43:46,275 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-12-07 01:43:46,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:43:46,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-07 01:43:46,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:46,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-07 01:43:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 42 proven. 61 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:43:47,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:43:52,457 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:43:52,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:43:52,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961158034] [2021-12-07 01:43:52,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961158034] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:43:52,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:43:52,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2021-12-07 01:43:52,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062705671] [2021-12-07 01:43:52,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:43:52,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-07 01:43:52,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:43:52,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-07 01:43:52,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2021-12-07 01:43:52,458 INFO L87 Difference]: Start difference. First operand 553 states and 660 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 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) [2021-12-07 01:43:54,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:43:54,816 INFO L93 Difference]: Finished difference Result 602 states and 714 transitions. [2021-12-07 01:43:54,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-07 01:43:54,817 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-07 01:43:54,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:43:54,819 INFO L225 Difference]: With dead ends: 602 [2021-12-07 01:43:54,819 INFO L226 Difference]: Without dead ends: 598 [2021-12-07 01:43:54,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=145, Invalid=725, Unknown=0, NotChecked=0, Total=870 [2021-12-07 01:43:54,819 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 89 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:43:54,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 512 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 298 Invalid, 0 Unknown, 47 Unchecked, 1.8s Time] [2021-12-07 01:43:54,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-12-07 01:43:54,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 581. [2021-12-07 01:43:54,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 579 states have (on average 1.1986183074265975) internal successors, (694), 580 states have internal predecessors, (694), 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) [2021-12-07 01:43:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 694 transitions. [2021-12-07 01:43:54,826 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 694 transitions. Word has length 62 [2021-12-07 01:43:54,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:43:54,826 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 694 transitions. [2021-12-07 01:43:54,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 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) [2021-12-07 01:43:54,826 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 694 transitions. [2021-12-07 01:43:54,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-07 01:43:54,827 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:43:54,827 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:43:54,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-12-07 01:43:55,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:43:55,028 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:43:55,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:43:55,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1690830789, now seen corresponding path program 3 times [2021-12-07 01:43:55,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:43:55,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012546398] [2021-12-07 01:43:55,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:43:55,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:43:55,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:43:55,033 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:43:55,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-12-07 01:43:55,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-07 01:43:55,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:43:55,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-07 01:43:55,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:43:55,344 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 8 treesize of output 7 [2021-12-07 01:43:57,831 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 78 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-07 01:43:57,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:44:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 38 proven. 61 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-07 01:44:06,453 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:44:06,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012546398] [2021-12-07 01:44:06,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012546398] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:44:06,453 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:44:06,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-12-07 01:44:06,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379578162] [2021-12-07 01:44:06,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:44:06,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-07 01:44:06,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:44:06,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-07 01:44:06,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2021-12-07 01:44:06,454 INFO L87 Difference]: Start difference. First operand 581 states and 694 transitions. Second operand has 28 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 28 states have internal predecessors, (110), 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) [2021-12-07 01:44:07,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:44:07,684 INFO L93 Difference]: Finished difference Result 778 states and 924 transitions. [2021-12-07 01:44:07,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-07 01:44:07,684 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 28 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-07 01:44:07,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:44:07,686 INFO L225 Difference]: With dead ends: 778 [2021-12-07 01:44:07,687 INFO L226 Difference]: Without dead ends: 771 [2021-12-07 01:44:07,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2021-12-07 01:44:07,687 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 71 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:44:07,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 355 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 131 Unchecked, 0.4s Time] [2021-12-07 01:44:07,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-12-07 01:44:07,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 609. [2021-12-07 01:44:07,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 607 states have (on average 1.2059308072487644) internal successors, (732), 608 states have internal predecessors, (732), 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) [2021-12-07 01:44:07,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 732 transitions. [2021-12-07 01:44:07,695 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 732 transitions. Word has length 62 [2021-12-07 01:44:07,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:44:07,695 INFO L470 AbstractCegarLoop]: Abstraction has 609 states and 732 transitions. [2021-12-07 01:44:07,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 28 states have internal predecessors, (110), 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) [2021-12-07 01:44:07,695 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 732 transitions. [2021-12-07 01:44:07,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-07 01:44:07,696 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:44:07,696 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:44:07,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-12-07 01:44:07,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:44:07,897 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:44:07,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:44:07,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1445824571, now seen corresponding path program 4 times [2021-12-07 01:44:07,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:44:07,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021081397] [2021-12-07 01:44:07,899 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:44:07,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:44:07,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:44:07,902 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:44:07,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-12-07 01:44:08,158 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:44:08,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:44:08,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:44:08,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:44:08,185 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 8 treesize of output 7 [2021-12-07 01:44:09,254 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:44:09,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:44:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:44:14,081 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:44:14,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021081397] [2021-12-07 01:44:14,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021081397] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:44:14,081 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:44:14,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:44:14,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993341429] [2021-12-07 01:44:14,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:44:14,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:44:14,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:44:14,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:44:14,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:44:14,082 INFO L87 Difference]: Start difference. First operand 609 states and 732 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 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) [2021-12-07 01:44:16,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:44:16,539 INFO L93 Difference]: Finished difference Result 726 states and 865 transitions. [2021-12-07 01:44:16,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-07 01:44:16,541 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-07 01:44:16,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:44:16,543 INFO L225 Difference]: With dead ends: 726 [2021-12-07 01:44:16,543 INFO L226 Difference]: Without dead ends: 725 [2021-12-07 01:44:16,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2021-12-07 01:44:16,544 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 83 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:44:16,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 497 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 250 Invalid, 0 Unknown, 59 Unchecked, 1.7s Time] [2021-12-07 01:44:16,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-12-07 01:44:16,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 684. [2021-12-07 01:44:16,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 682 states have (on average 1.2111436950146628) internal successors, (826), 683 states have internal predecessors, (826), 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) [2021-12-07 01:44:16,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 826 transitions. [2021-12-07 01:44:16,552 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 826 transitions. Word has length 62 [2021-12-07 01:44:16,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:44:16,552 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 826 transitions. [2021-12-07 01:44:16,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 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) [2021-12-07 01:44:16,552 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 826 transitions. [2021-12-07 01:44:16,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-07 01:44:16,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:44:16,553 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:44:16,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2021-12-07 01:44:16,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:44:16,754 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:44:16,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:44:16,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1156345861, now seen corresponding path program 5 times [2021-12-07 01:44:16,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:44:16,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223805382] [2021-12-07 01:44:16,756 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 01:44:16,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:44:16,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:44:16,759 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:44:16,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-12-07 01:44:17,052 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-12-07 01:44:17,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:44:17,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-07 01:44:17,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:44:17,078 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 8 treesize of output 7 [2021-12-07 01:44:18,192 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 63 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:44:18,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:44:23,493 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:44:23,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:44:23,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223805382] [2021-12-07 01:44:23,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223805382] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:44:23,494 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:44:23,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2021-12-07 01:44:23,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158892899] [2021-12-07 01:44:23,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:44:23,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-07 01:44:23,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:44:23,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-07 01:44:23,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2021-12-07 01:44:23,495 INFO L87 Difference]: Start difference. First operand 684 states and 826 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 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) [2021-12-07 01:44:29,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:44:29,620 INFO L93 Difference]: Finished difference Result 767 states and 914 transitions. [2021-12-07 01:44:29,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-07 01:44:29,621 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-07 01:44:29,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:44:29,624 INFO L225 Difference]: With dead ends: 767 [2021-12-07 01:44:29,624 INFO L226 Difference]: Without dead ends: 760 [2021-12-07 01:44:29,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=179, Invalid=1081, Unknown=0, NotChecked=0, Total=1260 [2021-12-07 01:44:29,625 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 95 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:44:29,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 519 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 304 Invalid, 0 Unknown, 11 Unchecked, 2.3s Time] [2021-12-07 01:44:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2021-12-07 01:44:29,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 725. [2021-12-07 01:44:29,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 723 states have (on average 1.210235131396957) internal successors, (875), 724 states have internal predecessors, (875), 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) [2021-12-07 01:44:29,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 875 transitions. [2021-12-07 01:44:29,636 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 875 transitions. Word has length 62 [2021-12-07 01:44:29,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:44:29,636 INFO L470 AbstractCegarLoop]: Abstraction has 725 states and 875 transitions. [2021-12-07 01:44:29,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 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) [2021-12-07 01:44:29,636 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 875 transitions. [2021-12-07 01:44:29,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-07 01:44:29,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:44:29,637 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:44:29,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-12-07 01:44:29,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:44:29,838 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:44:29,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:44:29,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1322668283, now seen corresponding path program 5 times [2021-12-07 01:44:29,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:44:29,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211487184] [2021-12-07 01:44:29,841 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 01:44:29,842 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:44:29,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:44:29,844 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:44:29,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-12-07 01:44:30,037 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-12-07 01:44:30,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:44:30,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-07 01:44:30,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:44:30,060 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 8 treesize of output 7 [2021-12-07 01:44:31,136 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:44:31,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:44:36,412 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:44:36,412 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:44:36,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211487184] [2021-12-07 01:44:36,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211487184] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:44:36,412 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:44:36,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2021-12-07 01:44:36,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38910266] [2021-12-07 01:44:36,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:44:36,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-07 01:44:36,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:44:36,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-07 01:44:36,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2021-12-07 01:44:36,413 INFO L87 Difference]: Start difference. First operand 725 states and 875 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 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) [2021-12-07 01:44:39,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:44:39,534 INFO L93 Difference]: Finished difference Result 885 states and 1055 transitions. [2021-12-07 01:44:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-07 01:44:39,535 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-07 01:44:39,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:44:39,538 INFO L225 Difference]: With dead ends: 885 [2021-12-07 01:44:39,538 INFO L226 Difference]: Without dead ends: 884 [2021-12-07 01:44:39,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2021-12-07 01:44:39,539 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 96 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:44:39,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 427 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 290 Invalid, 0 Unknown, 23 Unchecked, 2.0s Time] [2021-12-07 01:44:39,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2021-12-07 01:44:39,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 798. [2021-12-07 01:44:39,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 796 states have (on average 1.2097989949748744) internal successors, (963), 797 states have internal predecessors, (963), 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) [2021-12-07 01:44:39,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 963 transitions. [2021-12-07 01:44:39,547 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 963 transitions. Word has length 62 [2021-12-07 01:44:39,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:44:39,548 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 963 transitions. [2021-12-07 01:44:39,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 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) [2021-12-07 01:44:39,548 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 963 transitions. [2021-12-07 01:44:39,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-07 01:44:39,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:44:39,549 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1] [2021-12-07 01:44:39,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2021-12-07 01:44:39,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:44:39,750 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:44:39,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:44:39,751 INFO L85 PathProgramCache]: Analyzing trace with hash 58542645, now seen corresponding path program 4 times [2021-12-07 01:44:39,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:44:39,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786075568] [2021-12-07 01:44:39,752 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:44:39,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:44:39,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:44:39,755 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:44:39,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-12-07 01:44:39,912 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:44:39,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:44:39,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 01:44:39,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:44:39,937 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 8 treesize of output 7 [2021-12-07 01:44:42,046 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:44:42,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:44:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:44:54,443 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:44:54,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786075568] [2021-12-07 01:44:54,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786075568] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:44:54,443 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:44:54,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2021-12-07 01:44:54,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760594418] [2021-12-07 01:44:54,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:44:54,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-07 01:44:54,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:44:54,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-07 01:44:54,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=1525, Unknown=0, NotChecked=0, Total=2070 [2021-12-07 01:44:54,444 INFO L87 Difference]: Start difference. First operand 798 states and 963 transitions. Second operand has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 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) [2021-12-07 01:45:11,239 WARN L227 SmtUtils]: Spent 10.15s on a formula simplification that was a NOOP. DAG size: 171 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:45:12,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:45:14,793 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:45:16,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:45:18,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:45:29,323 WARN L227 SmtUtils]: Spent 9.95s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:45:47,917 WARN L227 SmtUtils]: Spent 17.54s on a formula simplification. DAG size of input: 163 DAG size of output: 163 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:45:51,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:45:53,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:45:55,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:46:04,039 WARN L227 SmtUtils]: Spent 7.97s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:46:19,815 WARN L227 SmtUtils]: Spent 14.55s on a formula simplification. DAG size of input: 152 DAG size of output: 152 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:46:22,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:46:24,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:46:26,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:46:33,640 WARN L227 SmtUtils]: Spent 6.55s on a formula simplification that was a NOOP. DAG size: 146 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:46:47,078 WARN L227 SmtUtils]: Spent 12.20s on a formula simplification. DAG size of input: 141 DAG size of output: 141 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:46:49,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:46:51,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:46:53,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:46:59,920 WARN L227 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 136 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:47:09,169 WARN L227 SmtUtils]: Spent 8.33s on a formula simplification. DAG size of input: 131 DAG size of output: 131 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:47:11,470 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:47:13,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:47:15,477 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:47:28,004 WARN L227 SmtUtils]: Spent 7.03s on a formula simplification. DAG size of input: 120 DAG size of output: 120 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:47:30,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:47:32,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:47:34,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:47:44,620 WARN L227 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 109 DAG size of output: 109 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:47:46,999 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:47:49,002 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:47:50,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:48:02,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:48:10,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:48:18,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:48:20,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:48:26,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:48:28,599 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:48:33,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:48:37,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:48:42,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:48:42,823 INFO L93 Difference]: Finished difference Result 5214 states and 6102 transitions. [2021-12-07 01:48:42,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-12-07 01:48:42,825 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-07 01:48:42,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:48:42,842 INFO L225 Difference]: With dead ends: 5214 [2021-12-07 01:48:42,842 INFO L226 Difference]: Without dead ends: 5214 [2021-12-07 01:48:42,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2417 ImplicationChecksByTransitivity, 159.5s TimeCoverageRelationStatistics Valid=2202, Invalid=5280, Unknown=0, NotChecked=0, Total=7482 [2021-12-07 01:48:42,844 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 5371 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 3562 mSolverCounterSat, 159 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5371 SdHoareTripleChecker+Valid, 3315 SdHoareTripleChecker+Invalid, 3945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 3562 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 77.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:48:42,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5371 Valid, 3315 Invalid, 3945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 3562 Invalid, 26 Unknown, 198 Unchecked, 77.8s Time] [2021-12-07 01:48:42,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5214 states. [2021-12-07 01:48:42,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5214 to 862. [2021-12-07 01:48:42,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 860 states have (on average 1.2127906976744185) internal successors, (1043), 861 states have internal predecessors, (1043), 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) [2021-12-07 01:48:42,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1043 transitions. [2021-12-07 01:48:42,866 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1043 transitions. Word has length 66 [2021-12-07 01:48:42,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:48:42,866 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 1043 transitions. [2021-12-07 01:48:42,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 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) [2021-12-07 01:48:42,866 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1043 transitions. [2021-12-07 01:48:42,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 01:48:42,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:48:42,868 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:48:42,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2021-12-07 01:48:43,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:48:43,069 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:48:43,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:48:43,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1582841650, now seen corresponding path program 6 times [2021-12-07 01:48:43,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:48:43,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076875987] [2021-12-07 01:48:43,071 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 01:48:43,071 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:48:43,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:48:43,073 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:48:43,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-12-07 01:48:43,280 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-07 01:48:43,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:48:43,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:48:43,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:48:43,308 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 8 treesize of output 7 [2021-12-07 01:48:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 32 proven. 84 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:48:44,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:48:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:48:49,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:48:49,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076875987] [2021-12-07 01:48:49,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076875987] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:48:49,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:48:49,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2021-12-07 01:48:49,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426020849] [2021-12-07 01:48:49,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:48:49,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-07 01:48:49,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:48:49,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-07 01:48:49,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2021-12-07 01:48:49,600 INFO L87 Difference]: Start difference. First operand 862 states and 1043 transitions. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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) [2021-12-07 01:48:54,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:48:54,802 INFO L93 Difference]: Finished difference Result 1222 states and 1439 transitions. [2021-12-07 01:48:54,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-07 01:48:54,804 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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 68 [2021-12-07 01:48:54,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:48:54,808 INFO L225 Difference]: With dead ends: 1222 [2021-12-07 01:48:54,808 INFO L226 Difference]: Without dead ends: 1211 [2021-12-07 01:48:54,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2021-12-07 01:48:54,809 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 115 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-07 01:48:54,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 687 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 391 Invalid, 0 Unknown, 198 Unchecked, 2.9s Time] [2021-12-07 01:48:54,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-12-07 01:48:54,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 862. [2021-12-07 01:48:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 860 states have (on average 1.2116279069767442) internal successors, (1042), 861 states have internal predecessors, (1042), 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) [2021-12-07 01:48:54,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1042 transitions. [2021-12-07 01:48:54,819 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1042 transitions. Word has length 68 [2021-12-07 01:48:54,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:48:54,819 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 1042 transitions. [2021-12-07 01:48:54,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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) [2021-12-07 01:48:54,819 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1042 transitions. [2021-12-07 01:48:54,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 01:48:54,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:48:54,820 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:48:54,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-12-07 01:48:55,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:48:55,021 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:48:55,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:48:55,022 INFO L85 PathProgramCache]: Analyzing trace with hash 978909326, now seen corresponding path program 7 times [2021-12-07 01:48:55,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:48:55,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353399482] [2021-12-07 01:48:55,024 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 01:48:55,024 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:48:55,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:48:55,026 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:48:55,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-12-07 01:48:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:48:55,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:48:55,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:48:55,174 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 8 treesize of output 7 [2021-12-07 01:48:56,335 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 45 proven. 68 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 01:48:56,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:49:01,541 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:49:01,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:49:01,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353399482] [2021-12-07 01:49:01,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353399482] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:49:01,542 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:49:01,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:49:01,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537888797] [2021-12-07 01:49:01,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:49:01,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:49:01,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:49:01,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:49:01,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:49:01,545 INFO L87 Difference]: Start difference. First operand 862 states and 1042 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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) [2021-12-07 01:49:03,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:49:03,447 INFO L93 Difference]: Finished difference Result 892 states and 1072 transitions. [2021-12-07 01:49:03,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 01:49:03,449 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 68 [2021-12-07 01:49:03,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:49:03,452 INFO L225 Difference]: With dead ends: 892 [2021-12-07 01:49:03,452 INFO L226 Difference]: Without dead ends: 865 [2021-12-07 01:49:03,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-12-07 01:49:03,453 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 76 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:49:03,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 350 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 225 Invalid, 0 Unknown, 10 Unchecked, 1.3s Time] [2021-12-07 01:49:03,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-12-07 01:49:03,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 850. [2021-12-07 01:49:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 848 states have (on average 1.2122641509433962) internal successors, (1028), 849 states have internal predecessors, (1028), 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) [2021-12-07 01:49:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1028 transitions. [2021-12-07 01:49:03,461 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1028 transitions. Word has length 68 [2021-12-07 01:49:03,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:49:03,461 INFO L470 AbstractCegarLoop]: Abstraction has 850 states and 1028 transitions. [2021-12-07 01:49:03,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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) [2021-12-07 01:49:03,461 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1028 transitions. [2021-12-07 01:49:03,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 01:49:03,462 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:49:03,462 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:49:03,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-12-07 01:49:03,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:49:03,663 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:49:03,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:49:03,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1048356722, now seen corresponding path program 8 times [2021-12-07 01:49:03,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:49:03,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361785202] [2021-12-07 01:49:03,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:49:03,666 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:49:03,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:49:03,668 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:49:03,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-12-07 01:49:03,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:49:03,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:49:03,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:49:03,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:49:03,797 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 8 treesize of output 7 [2021-12-07 01:49:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 45 proven. 68 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 01:49:04,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:49:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:49:10,005 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:49:10,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361785202] [2021-12-07 01:49:10,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361785202] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:49:10,005 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:49:10,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:49:10,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342483937] [2021-12-07 01:49:10,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:49:10,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:49:10,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:49:10,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:49:10,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:49:10,006 INFO L87 Difference]: Start difference. First operand 850 states and 1028 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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) [2021-12-07 01:49:12,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:49:12,693 INFO L93 Difference]: Finished difference Result 841 states and 1008 transitions. [2021-12-07 01:49:12,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-07 01:49:12,695 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 68 [2021-12-07 01:49:12,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:49:12,698 INFO L225 Difference]: With dead ends: 841 [2021-12-07 01:49:12,698 INFO L226 Difference]: Without dead ends: 826 [2021-12-07 01:49:12,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2021-12-07 01:49:12,698 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 78 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:49:12,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 386 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 227 Invalid, 0 Unknown, 81 Unchecked, 1.7s Time] [2021-12-07 01:49:12,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-12-07 01:49:12,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 806. [2021-12-07 01:49:12,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.208955223880597) internal successors, (972), 805 states have internal predecessors, (972), 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) [2021-12-07 01:49:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 972 transitions. [2021-12-07 01:49:12,707 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 972 transitions. Word has length 68 [2021-12-07 01:49:12,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:49:12,707 INFO L470 AbstractCegarLoop]: Abstraction has 806 states and 972 transitions. [2021-12-07 01:49:12,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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) [2021-12-07 01:49:12,707 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 972 transitions. [2021-12-07 01:49:12,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 01:49:12,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:49:12,708 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:49:12,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-12-07 01:49:12,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:49:12,909 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:49:12,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:49:12,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1513394254, now seen corresponding path program 6 times [2021-12-07 01:49:12,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:49:12,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938731711] [2021-12-07 01:49:12,911 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 01:49:12,912 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:49:12,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:49:12,914 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:49:12,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-12-07 01:49:13,169 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-07 01:49:13,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:49:13,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-07 01:49:13,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:49:13,197 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 8 treesize of output 7 [2021-12-07 01:49:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 45 proven. 81 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 01:49:14,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:49:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:49:21,438 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:49:21,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938731711] [2021-12-07 01:49:21,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938731711] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:49:21,438 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:49:21,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 27 [2021-12-07 01:49:21,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815805501] [2021-12-07 01:49:21,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:49:21,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-07 01:49:21,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:49:21,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-07 01:49:21,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2021-12-07 01:49:21,439 INFO L87 Difference]: Start difference. First operand 806 states and 972 transitions. Second operand has 27 states, 27 states have (on average 4.62962962962963) internal successors, (125), 27 states have internal predecessors, (125), 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) [2021-12-07 01:49:29,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:49:32,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:49:32,124 INFO L93 Difference]: Finished difference Result 893 states and 1071 transitions. [2021-12-07 01:49:32,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-07 01:49:32,126 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.62962962962963) internal successors, (125), 27 states have internal predecessors, (125), 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 68 [2021-12-07 01:49:32,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:49:32,129 INFO L225 Difference]: With dead ends: 893 [2021-12-07 01:49:32,129 INFO L226 Difference]: Without dead ends: 862 [2021-12-07 01:49:32,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=261, Invalid=1379, Unknown=0, NotChecked=0, Total=1640 [2021-12-07 01:49:32,130 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 125 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:49:32,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 511 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 307 Invalid, 0 Unknown, 55 Unchecked, 4.0s Time] [2021-12-07 01:49:32,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-12-07 01:49:32,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 782. [2021-12-07 01:49:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 780 states have (on average 1.2115384615384615) internal successors, (945), 781 states have internal predecessors, (945), 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) [2021-12-07 01:49:32,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 945 transitions. [2021-12-07 01:49:32,138 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 945 transitions. Word has length 68 [2021-12-07 01:49:32,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:49:32,138 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 945 transitions. [2021-12-07 01:49:32,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.62962962962963) internal successors, (125), 27 states have internal predecessors, (125), 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) [2021-12-07 01:49:32,138 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 945 transitions. [2021-12-07 01:49:32,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 01:49:32,139 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:49:32,139 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:49:32,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2021-12-07 01:49:32,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:49:32,340 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:49:32,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:49:32,341 INFO L85 PathProgramCache]: Analyzing trace with hash 477616526, now seen corresponding path program 9 times [2021-12-07 01:49:32,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:49:32,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769337148] [2021-12-07 01:49:32,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:49:32,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:49:32,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:49:32,345 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:49:32,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-12-07 01:49:32,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-12-07 01:49:32,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:49:32,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:49:32,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:49:32,659 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 8 treesize of output 7 [2021-12-07 01:49:34,042 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 32 proven. 84 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:49:34,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:49:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:49:38,881 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:49:38,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769337148] [2021-12-07 01:49:38,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769337148] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:49:38,881 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:49:38,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2021-12-07 01:49:38,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614281715] [2021-12-07 01:49:38,881 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:49:38,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-07 01:49:38,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:49:38,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-07 01:49:38,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2021-12-07 01:49:38,882 INFO L87 Difference]: Start difference. First operand 782 states and 945 transitions. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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) [2021-12-07 01:49:46,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:49:46,716 INFO L93 Difference]: Finished difference Result 1034 states and 1219 transitions. [2021-12-07 01:49:46,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-07 01:49:46,717 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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 68 [2021-12-07 01:49:46,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:49:46,720 INFO L225 Difference]: With dead ends: 1034 [2021-12-07 01:49:46,720 INFO L226 Difference]: Without dead ends: 979 [2021-12-07 01:49:46,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2021-12-07 01:49:46,721 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 113 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 177 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:49:46,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 719 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 507 Invalid, 0 Unknown, 177 Unchecked, 4.1s Time] [2021-12-07 01:49:46,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2021-12-07 01:49:46,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 772. [2021-12-07 01:49:46,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 770 states have (on average 1.2116883116883117) internal successors, (933), 771 states have internal predecessors, (933), 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) [2021-12-07 01:49:46,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 933 transitions. [2021-12-07 01:49:46,729 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 933 transitions. Word has length 68 [2021-12-07 01:49:46,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:49:46,730 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 933 transitions. [2021-12-07 01:49:46,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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) [2021-12-07 01:49:46,730 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 933 transitions. [2021-12-07 01:49:46,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 01:49:46,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:49:46,730 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:49:46,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-12-07 01:49:46,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:49:46,932 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:49:46,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:49:46,933 INFO L85 PathProgramCache]: Analyzing trace with hash 354433678, now seen corresponding path program 6 times [2021-12-07 01:49:46,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:49:46,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801259934] [2021-12-07 01:49:46,934 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 01:49:46,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:49:46,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:49:46,937 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:49:46,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-12-07 01:49:47,184 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-12-07 01:49:47,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:49:47,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:49:47,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:49:47,212 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 8 treesize of output 7 [2021-12-07 01:49:48,406 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 45 proven. 79 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-07 01:49:48,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:49:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 1 proven. 127 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 01:49:53,446 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:49:53,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801259934] [2021-12-07 01:49:53,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801259934] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:49:53,446 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:49:53,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:49:53,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378784726] [2021-12-07 01:49:53,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:49:53,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:49:53,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:49:53,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:49:53,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:49:53,447 INFO L87 Difference]: Start difference. First operand 772 states and 933 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 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) [2021-12-07 01:49:59,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:49:59,731 INFO L93 Difference]: Finished difference Result 802 states and 965 transitions. [2021-12-07 01:49:59,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-07 01:49:59,733 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 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 68 [2021-12-07 01:49:59,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:49:59,736 INFO L225 Difference]: With dead ends: 802 [2021-12-07 01:49:59,736 INFO L226 Difference]: Without dead ends: 801 [2021-12-07 01:49:59,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=136, Invalid=856, Unknown=0, NotChecked=0, Total=992 [2021-12-07 01:49:59,736 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 77 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:49:59,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 510 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 281 Invalid, 0 Unknown, 10 Unchecked, 3.2s Time] [2021-12-07 01:49:59,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-12-07 01:49:59,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 776. [2021-12-07 01:49:59,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 774 states have (on average 1.2144702842377262) internal successors, (940), 775 states have internal predecessors, (940), 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) [2021-12-07 01:49:59,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 940 transitions. [2021-12-07 01:49:59,745 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 940 transitions. Word has length 68 [2021-12-07 01:49:59,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:49:59,745 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 940 transitions. [2021-12-07 01:49:59,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 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) [2021-12-07 01:49:59,745 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 940 transitions. [2021-12-07 01:49:59,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 01:49:59,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:49:59,746 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:49:59,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-12-07 01:49:59,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:49:59,947 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:49:59,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:49:59,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2112417202, now seen corresponding path program 10 times [2021-12-07 01:49:59,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:49:59,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24695648] [2021-12-07 01:49:59,947 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:49:59,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:49:59,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:49:59,948 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:49:59,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-12-07 01:50:00,052 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:50:00,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:50:00,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:50:00,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:50:00,077 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 8 treesize of output 7 [2021-12-07 01:50:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 45 proven. 67 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 01:50:01,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:50:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:50:06,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:50:06,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24695648] [2021-12-07 01:50:06,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24695648] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:50:06,300 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:50:06,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:50:06,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263615359] [2021-12-07 01:50:06,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:50:06,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:50:06,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:50:06,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:50:06,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:50:06,301 INFO L87 Difference]: Start difference. First operand 776 states and 940 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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) [2021-12-07 01:50:12,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:50:12,743 INFO L93 Difference]: Finished difference Result 788 states and 946 transitions. [2021-12-07 01:50:12,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-07 01:50:12,745 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 68 [2021-12-07 01:50:12,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:50:12,747 INFO L225 Difference]: With dead ends: 788 [2021-12-07 01:50:12,748 INFO L226 Difference]: Without dead ends: 781 [2021-12-07 01:50:12,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2021-12-07 01:50:12,748 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 86 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-07 01:50:12,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 505 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 239 Invalid, 0 Unknown, 63 Unchecked, 2.8s Time] [2021-12-07 01:50:12,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-12-07 01:50:12,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 754. [2021-12-07 01:50:12,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 752 states have (on average 1.2140957446808511) internal successors, (913), 753 states have internal predecessors, (913), 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) [2021-12-07 01:50:12,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 913 transitions. [2021-12-07 01:50:12,757 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 913 transitions. Word has length 68 [2021-12-07 01:50:12,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:50:12,757 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 913 transitions. [2021-12-07 01:50:12,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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) [2021-12-07 01:50:12,757 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 913 transitions. [2021-12-07 01:50:12,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 01:50:12,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:50:12,758 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:50:12,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-12-07 01:50:12,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:50:12,959 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:50:12,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:50:12,960 INFO L85 PathProgramCache]: Analyzing trace with hash -885091506, now seen corresponding path program 7 times [2021-12-07 01:50:12,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:50:12,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064506681] [2021-12-07 01:50:12,962 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 01:50:12,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:50:12,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:50:12,964 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:50:12,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-12-07 01:50:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:50:13,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:50:13,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:50:13,128 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 8 treesize of output 7 [2021-12-07 01:50:14,369 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 45 proven. 78 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 01:50:14,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:50:19,511 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:50:19,512 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:50:19,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064506681] [2021-12-07 01:50:19,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064506681] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:50:19,512 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:50:19,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:50:19,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238660970] [2021-12-07 01:50:19,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:50:19,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:50:19,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:50:19,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:50:19,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:50:19,513 INFO L87 Difference]: Start difference. First operand 754 states and 913 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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) [2021-12-07 01:50:21,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:50:21,118 INFO L93 Difference]: Finished difference Result 688 states and 824 transitions. [2021-12-07 01:50:21,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 01:50:21,120 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 68 [2021-12-07 01:50:21,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:50:21,122 INFO L225 Difference]: With dead ends: 688 [2021-12-07 01:50:21,122 INFO L226 Difference]: Without dead ends: 687 [2021-12-07 01:50:21,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2021-12-07 01:50:21,123 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 38 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:50:21,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 448 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 216 Invalid, 0 Unknown, 78 Unchecked, 1.3s Time] [2021-12-07 01:50:21,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-12-07 01:50:21,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 684. [2021-12-07 01:50:21,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 682 states have (on average 1.2023460410557185) internal successors, (820), 683 states have internal predecessors, (820), 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) [2021-12-07 01:50:21,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 820 transitions. [2021-12-07 01:50:21,130 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 820 transitions. Word has length 68 [2021-12-07 01:50:21,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:50:21,130 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 820 transitions. [2021-12-07 01:50:21,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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) [2021-12-07 01:50:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 820 transitions. [2021-12-07 01:50:21,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 01:50:21,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:50:21,131 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:50:21,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-12-07 01:50:21,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:50:21,332 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:50:21,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:50:21,333 INFO L85 PathProgramCache]: Analyzing trace with hash 632463694, now seen corresponding path program 11 times [2021-12-07 01:50:21,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:50:21,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109625798] [2021-12-07 01:50:21,335 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 01:50:21,335 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:50:21,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:50:21,337 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:50:21,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-12-07 01:50:21,570 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-12-07 01:50:21,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:50:21,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 01:50:21,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:50:21,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-07 01:50:23,231 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 45 proven. 68 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 01:50:23,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:50:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:50:29,511 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:50:29,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109625798] [2021-12-07 01:50:29,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109625798] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:50:29,511 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:50:29,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 28 [2021-12-07 01:50:29,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817049297] [2021-12-07 01:50:29,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:50:29,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-07 01:50:29,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:50:29,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-07 01:50:29,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2021-12-07 01:50:29,512 INFO L87 Difference]: Start difference. First operand 684 states and 820 transitions. Second operand has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 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) [2021-12-07 01:50:40,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:50:40,821 INFO L93 Difference]: Finished difference Result 718 states and 857 transitions. [2021-12-07 01:50:40,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-07 01:50:40,821 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 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 68 [2021-12-07 01:50:40,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:50:40,823 INFO L225 Difference]: With dead ends: 718 [2021-12-07 01:50:40,823 INFO L226 Difference]: Without dead ends: 707 [2021-12-07 01:50:40,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=297, Invalid=1959, Unknown=0, NotChecked=0, Total=2256 [2021-12-07 01:50:40,824 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 198 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 224 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:50:40,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 677 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 693 Invalid, 0 Unknown, 224 Unchecked, 5.6s Time] [2021-12-07 01:50:40,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-12-07 01:50:40,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 669. [2021-12-07 01:50:40,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 667 states have (on average 1.2008995502248876) internal successors, (801), 668 states have internal predecessors, (801), 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) [2021-12-07 01:50:40,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 801 transitions. [2021-12-07 01:50:40,832 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 801 transitions. Word has length 68 [2021-12-07 01:50:40,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:50:40,832 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 801 transitions. [2021-12-07 01:50:40,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 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) [2021-12-07 01:50:40,832 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 801 transitions. [2021-12-07 01:50:40,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 01:50:40,833 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:50:40,833 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:50:40,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2021-12-07 01:50:41,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:50:41,034 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:50:41,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:50:41,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1100752626, now seen corresponding path program 7 times [2021-12-07 01:50:41,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:50:41,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069145483] [2021-12-07 01:50:41,038 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 01:50:41,038 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:50:41,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:50:41,040 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:50:41,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-12-07 01:50:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:50:41,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:50:41,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:50:41,172 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 8 treesize of output 7 [2021-12-07 01:50:42,404 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 45 proven. 81 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 01:50:42,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:50:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:50:47,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:50:47,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069145483] [2021-12-07 01:50:47,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069145483] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:50:47,672 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:50:47,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:50:47,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385505298] [2021-12-07 01:50:47,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:50:47,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:50:47,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:50:47,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:50:47,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:50:47,673 INFO L87 Difference]: Start difference. First operand 669 states and 801 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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) [2021-12-07 01:50:49,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:50:49,387 INFO L93 Difference]: Finished difference Result 686 states and 814 transitions. [2021-12-07 01:50:49,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-07 01:50:49,389 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 68 [2021-12-07 01:50:49,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:50:49,391 INFO L225 Difference]: With dead ends: 686 [2021-12-07 01:50:49,391 INFO L226 Difference]: Without dead ends: 663 [2021-12-07 01:50:49,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2021-12-07 01:50:49,392 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 69 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:50:49,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 537 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 163 Invalid, 0 Unknown, 56 Unchecked, 1.4s Time] [2021-12-07 01:50:49,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-12-07 01:50:49,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 638. [2021-12-07 01:50:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 636 states have (on average 1.2028301886792452) internal successors, (765), 637 states have internal predecessors, (765), 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) [2021-12-07 01:50:49,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 765 transitions. [2021-12-07 01:50:49,398 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 765 transitions. Word has length 68 [2021-12-07 01:50:49,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:50:49,398 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 765 transitions. [2021-12-07 01:50:49,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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) [2021-12-07 01:50:49,398 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 765 transitions. [2021-12-07 01:50:49,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 01:50:49,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:50:49,399 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:50:49,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2021-12-07 01:50:49,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:50:49,600 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:50:49,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:50:49,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1957570034, now seen corresponding path program 12 times [2021-12-07 01:50:49,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:50:49,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170828871] [2021-12-07 01:50:49,603 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 01:50:49,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:50:49,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:50:49,605 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:50:49,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-12-07 01:50:49,853 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-07 01:50:49,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:50:49,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-07 01:50:49,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:50:49,885 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 8 treesize of output 7 [2021-12-07 01:50:51,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:50:51,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:50:51,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:50:51,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:50:51,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:50:51,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:50:51,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 75 [2021-12-07 01:50:53,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:50:53,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:50:53,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:50:53,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:50:53,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:50:53,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:50:53,709 INFO L354 Elim1Store]: treesize reduction 1407, result has 8.4 percent of original size [2021-12-07 01:50:53,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 198 treesize of output 184 [2021-12-07 01:51:00,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 01:51:00,486 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 01:51:00,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 204 treesize of output 175 [2021-12-07 01:51:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 2 proven. 118 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-07 01:51:06,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:51:44,640 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 4651 treesize of output 4015 [2021-12-07 01:51:44,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 01:51:44,787 INFO L354 Elim1Store]: treesize reduction 70, result has 1.4 percent of original size [2021-12-07 01:51:44,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 2616 treesize of output 1212 [2021-12-07 01:52:11,707 WARN L227 SmtUtils]: Spent 6.17s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:52:18,947 WARN L227 SmtUtils]: Spent 6.15s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:52:26,333 WARN L227 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:52:34,070 WARN L227 SmtUtils]: Spent 6.17s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:52:41,846 WARN L227 SmtUtils]: Spent 6.18s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:52:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 112 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-07 01:52:45,552 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:52:45,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170828871] [2021-12-07 01:52:45,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170828871] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:52:45,552 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:52:45,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2021-12-07 01:52:45,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100198750] [2021-12-07 01:52:45,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:52:45,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-12-07 01:52:45,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:52:45,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-12-07 01:52:45,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=2756, Unknown=2, NotChecked=0, Total=3080 [2021-12-07 01:52:45,554 INFO L87 Difference]: Start difference. First operand 638 states and 765 transitions. Second operand has 56 states, 55 states have (on average 2.4) internal successors, (132), 56 states have internal predecessors, (132), 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) [2021-12-07 01:53:48,387 WARN L227 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 58 DAG size of output: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:54:02,939 WARN L227 SmtUtils]: Spent 7.82s on a formula simplification. DAG size of input: 43 DAG size of output: 41 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:54:14,148 WARN L227 SmtUtils]: Spent 8.55s on a formula simplification. DAG size of input: 40 DAG size of output: 38 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:54:21,333 WARN L227 SmtUtils]: Spent 5.14s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:54:42,024 WARN L227 SmtUtils]: Spent 5.81s on a formula simplification that was a NOOP. DAG size: 126 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 01:54:47,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:54:47,861 INFO L93 Difference]: Finished difference Result 888 states and 1067 transitions. [2021-12-07 01:54:47,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-12-07 01:54:47,863 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.4) internal successors, (132), 56 states have internal predecessors, (132), 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 68 [2021-12-07 01:54:47,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:54:47,867 INFO L225 Difference]: With dead ends: 888 [2021-12-07 01:54:47,867 INFO L226 Difference]: Without dead ends: 888 [2021-12-07 01:54:47,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1998 ImplicationChecksByTransitivity, 199.4s TimeCoverageRelationStatistics Valid=728, Invalid=6574, Unknown=8, NotChecked=0, Total=7310 [2021-12-07 01:54:47,868 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 108 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1157 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:54:47,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 742 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 1157 Unchecked, 1.2s Time] [2021-12-07 01:54:47,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2021-12-07 01:54:47,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 826. [2021-12-07 01:54:47,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 824 states have (on average 1.2087378640776698) internal successors, (996), 825 states have internal predecessors, (996), 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) [2021-12-07 01:54:47,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 996 transitions. [2021-12-07 01:54:47,880 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 996 transitions. Word has length 68 [2021-12-07 01:54:47,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:54:47,880 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 996 transitions. [2021-12-07 01:54:47,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.4) internal successors, (132), 56 states have internal predecessors, (132), 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) [2021-12-07 01:54:47,881 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 996 transitions. [2021-12-07 01:54:47,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 01:54:47,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:54:47,881 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:54:47,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-12-07 01:54:48,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:54:48,082 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:54:48,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:54:48,083 INFO L85 PathProgramCache]: Analyzing trace with hash -730244338, now seen corresponding path program 13 times [2021-12-07 01:54:48,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:54:48,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869017671] [2021-12-07 01:54:48,085 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 01:54:48,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:54:48,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:54:48,087 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:54:48,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-12-07 01:54:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:54:48,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:54:48,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:54:48,420 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 8 treesize of output 7 [2021-12-07 01:54:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 45 proven. 67 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 01:54:49,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:54:55,508 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:54:55,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:54:55,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869017671] [2021-12-07 01:54:55,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869017671] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:54:55,508 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:54:55,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:54:55,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754056753] [2021-12-07 01:54:55,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:54:55,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:54:55,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:54:55,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:54:55,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:54:55,509 INFO L87 Difference]: Start difference. First operand 826 states and 996 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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) [2021-12-07 01:54:59,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:54:59,603 INFO L93 Difference]: Finished difference Result 995 states and 1194 transitions. [2021-12-07 01:54:59,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-07 01:54:59,606 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 68 [2021-12-07 01:54:59,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:54:59,608 INFO L225 Difference]: With dead ends: 995 [2021-12-07 01:54:59,608 INFO L226 Difference]: Without dead ends: 993 [2021-12-07 01:54:59,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2021-12-07 01:54:59,609 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 82 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-07 01:54:59,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 544 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 255 Invalid, 0 Unknown, 118 Unchecked, 2.5s Time] [2021-12-07 01:54:59,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2021-12-07 01:54:59,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 886. [2021-12-07 01:54:59,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 884 states have (on average 1.2036199095022624) internal successors, (1064), 885 states have internal predecessors, (1064), 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) [2021-12-07 01:54:59,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1064 transitions. [2021-12-07 01:54:59,617 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1064 transitions. Word has length 68 [2021-12-07 01:54:59,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:54:59,617 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 1064 transitions. [2021-12-07 01:54:59,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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) [2021-12-07 01:54:59,618 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1064 transitions. [2021-12-07 01:54:59,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 01:54:59,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:54:59,618 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:54:59,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2021-12-07 01:54:59,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:54:59,820 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:54:59,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:54:59,821 INFO L85 PathProgramCache]: Analyzing trace with hash 962552526, now seen corresponding path program 14 times [2021-12-07 01:54:59,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:54:59,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119656128] [2021-12-07 01:54:59,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:54:59,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:54:59,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:54:59,825 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:54:59,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-12-07 01:54:59,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:54:59,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:54:59,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:54:59,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:55:00,006 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 8 treesize of output 7 [2021-12-07 01:55:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 45 proven. 68 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 01:55:01,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:55:07,209 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:55:07,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:55:07,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119656128] [2021-12-07 01:55:07,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119656128] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:55:07,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:55:07,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:55:07,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70597499] [2021-12-07 01:55:07,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:55:07,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:55:07,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:55:07,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:55:07,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:55:07,210 INFO L87 Difference]: Start difference. First operand 886 states and 1064 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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) [2021-12-07 01:55:13,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:55:13,658 INFO L93 Difference]: Finished difference Result 1139 states and 1376 transitions. [2021-12-07 01:55:13,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-07 01:55:13,660 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 68 [2021-12-07 01:55:13,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:55:13,662 INFO L225 Difference]: With dead ends: 1139 [2021-12-07 01:55:13,662 INFO L226 Difference]: Without dead ends: 1137 [2021-12-07 01:55:13,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2021-12-07 01:55:13,663 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 63 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:55:13,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 535 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 267 Invalid, 0 Unknown, 10 Unchecked, 2.4s Time] [2021-12-07 01:55:13,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-12-07 01:55:13,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1008. [2021-12-07 01:55:13,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 1006 states have (on average 1.2147117296222665) internal successors, (1222), 1007 states have internal predecessors, (1222), 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) [2021-12-07 01:55:13,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1222 transitions. [2021-12-07 01:55:13,674 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1222 transitions. Word has length 68 [2021-12-07 01:55:13,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:55:13,674 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1222 transitions. [2021-12-07 01:55:13,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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) [2021-12-07 01:55:13,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1222 transitions. [2021-12-07 01:55:13,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 01:55:13,675 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:55:13,675 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:55:13,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2021-12-07 01:55:13,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:55:13,875 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:55:13,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:55:13,876 INFO L85 PathProgramCache]: Analyzing trace with hash -776771058, now seen corresponding path program 15 times [2021-12-07 01:55:13,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:55:13,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299583093] [2021-12-07 01:55:13,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:55:13,876 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:55:13,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:55:13,877 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:55:13,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-12-07 01:55:14,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-07 01:55:14,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:55:14,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:55:14,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:55:14,159 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 8 treesize of output 7 [2021-12-07 01:55:15,704 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 32 proven. 85 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:55:15,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:55:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:55:20,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:55:20,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299583093] [2021-12-07 01:55:20,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299583093] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:55:20,836 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:55:20,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2021-12-07 01:55:20,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462653770] [2021-12-07 01:55:20,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:55:20,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-07 01:55:20,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:55:20,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-07 01:55:20,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2021-12-07 01:55:20,837 INFO L87 Difference]: Start difference. First operand 1008 states and 1222 transitions. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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) [2021-12-07 01:55:28,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:55:28,752 INFO L93 Difference]: Finished difference Result 1074 states and 1296 transitions. [2021-12-07 01:55:28,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-07 01:55:28,754 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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 68 [2021-12-07 01:55:28,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:55:28,755 INFO L225 Difference]: With dead ends: 1074 [2021-12-07 01:55:28,755 INFO L226 Difference]: Without dead ends: 1071 [2021-12-07 01:55:28,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=232, Invalid=1490, Unknown=0, NotChecked=0, Total=1722 [2021-12-07 01:55:28,756 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 90 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:55:28,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 650 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 282 Invalid, 0 Unknown, 93 Unchecked, 1.6s Time] [2021-12-07 01:55:28,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2021-12-07 01:55:28,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 956. [2021-12-07 01:55:28,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 954 states have (on average 1.2159329140461217) internal successors, (1160), 955 states have internal predecessors, (1160), 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) [2021-12-07 01:55:28,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1160 transitions. [2021-12-07 01:55:28,765 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1160 transitions. Word has length 68 [2021-12-07 01:55:28,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:55:28,765 INFO L470 AbstractCegarLoop]: Abstraction has 956 states and 1160 transitions. [2021-12-07 01:55:28,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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) [2021-12-07 01:55:28,765 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1160 transitions. [2021-12-07 01:55:28,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 01:55:28,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:55:28,766 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:55:28,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-12-07 01:55:28,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:55:28,967 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:55:28,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:55:28,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2016296242, now seen corresponding path program 16 times [2021-12-07 01:55:28,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:55:28,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018210303] [2021-12-07 01:55:28,969 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 01:55:28,970 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:55:28,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:55:28,972 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:55:28,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-12-07 01:55:29,129 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 01:55:29,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:55:29,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:55:29,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:55:29,154 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 8 treesize of output 7 [2021-12-07 01:55:30,619 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 45 proven. 68 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 01:55:30,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:55:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:55:35,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:55:35,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018210303] [2021-12-07 01:55:35,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018210303] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:55:35,917 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:55:35,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:55:35,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732410951] [2021-12-07 01:55:35,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:55:35,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:55:35,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:55:35,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:55:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:55:35,918 INFO L87 Difference]: Start difference. First operand 956 states and 1160 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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) [2021-12-07 01:55:41,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:55:41,986 INFO L93 Difference]: Finished difference Result 1071 states and 1295 transitions. [2021-12-07 01:55:41,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-07 01:55:41,988 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 68 [2021-12-07 01:55:41,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:55:41,989 INFO L225 Difference]: With dead ends: 1071 [2021-12-07 01:55:41,989 INFO L226 Difference]: Without dead ends: 1069 [2021-12-07 01:55:41,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=154, Invalid=1036, Unknown=0, NotChecked=0, Total=1190 [2021-12-07 01:55:41,990 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 87 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:55:41,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 702 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 231 Invalid, 0 Unknown, 134 Unchecked, 1.7s Time] [2021-12-07 01:55:41,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-12-07 01:55:41,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 986. [2021-12-07 01:55:41,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 984 states have (on average 1.2164634146341464) internal successors, (1197), 985 states have internal predecessors, (1197), 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) [2021-12-07 01:55:41,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1197 transitions. [2021-12-07 01:55:41,999 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1197 transitions. Word has length 68 [2021-12-07 01:55:41,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:55:41,999 INFO L470 AbstractCegarLoop]: Abstraction has 986 states and 1197 transitions. [2021-12-07 01:55:41,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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) [2021-12-07 01:55:41,999 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1197 transitions. [2021-12-07 01:55:42,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 01:55:42,000 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:55:42,000 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:55:42,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2021-12-07 01:55:42,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:55:42,201 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:55:42,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:55:42,202 INFO L85 PathProgramCache]: Analyzing trace with hash -323499378, now seen corresponding path program 8 times [2021-12-07 01:55:42,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:55:42,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786191118] [2021-12-07 01:55:42,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:55:42,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:55:42,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:55:42,206 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:55:42,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-12-07 01:55:42,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:55:42,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:55:42,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 01:55:42,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:55:42,358 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 8 treesize of output 7 [2021-12-07 01:55:43,845 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 45 proven. 81 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 01:55:43,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:55:49,409 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:55:49,409 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 01:55:49,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786191118] [2021-12-07 01:55:49,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786191118] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:55:49,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:55:49,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 25 [2021-12-07 01:55:49,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582137848] [2021-12-07 01:55:49,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:55:49,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 01:55:49,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 01:55:49,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 01:55:49,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-07 01:55:49,410 INFO L87 Difference]: Start difference. First operand 986 states and 1197 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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) [2021-12-07 01:55:57,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 01:56:02,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:56:02,747 INFO L93 Difference]: Finished difference Result 1046 states and 1257 transitions. [2021-12-07 01:56:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-07 01:56:02,749 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 68 [2021-12-07 01:56:02,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:56:02,750 INFO L225 Difference]: With dead ends: 1046 [2021-12-07 01:56:02,750 INFO L226 Difference]: Without dead ends: 1036 [2021-12-07 01:56:02,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 115 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2021-12-07 01:56:02,751 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 96 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:56:02,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 519 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 207 Invalid, 0 Unknown, 109 Unchecked, 5.1s Time] [2021-12-07 01:56:02,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-12-07 01:56:02,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 998. [2021-12-07 01:56:02,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 996 states have (on average 1.215863453815261) internal successors, (1211), 997 states have internal predecessors, (1211), 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) [2021-12-07 01:56:02,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1211 transitions. [2021-12-07 01:56:02,759 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1211 transitions. Word has length 68 [2021-12-07 01:56:02,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:56:02,759 INFO L470 AbstractCegarLoop]: Abstraction has 998 states and 1211 transitions. [2021-12-07 01:56:02,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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) [2021-12-07 01:56:02,760 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1211 transitions. [2021-12-07 01:56:02,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-07 01:56:02,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:56:02,760 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:56:02,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (59)] Ended with exit code 0 [2021-12-07 01:56:02,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 01:56:02,961 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-12-07 01:56:02,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:56:02,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1683631583, now seen corresponding path program 17 times [2021-12-07 01:56:02,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 01:56:02,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772002034] [2021-12-07 01:56:02,964 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 01:56:02,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 01:56:02,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 01:56:02,967 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 01:56:02,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f462972b-6231-49ea-944c-25c07f3b7bb1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-12-07 01:56:03,227 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-12-07 01:56:03,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:56:03,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-07 01:56:03,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:56:03,257 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 8 treesize of output 7 [2021-12-07 01:56:04,718 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 59 proven. 69 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-07 01:56:04,718 INFO L328 TraceCheckSpWp]: Computing backward predicates...