./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.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_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/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_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/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_13eccaa5-ee5b-4472-907b-6a323655ba6f/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 cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:20:38,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:20:38,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:20:38,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:20:38,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:20:38,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:20:38,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:20:38,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:20:38,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:20:38,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:20:38,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:20:38,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:20:38,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:20:38,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:20:38,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:20:38,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:20:38,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:20:38,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:20:38,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:20:38,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:20:38,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:20:38,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:20:38,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:20:38,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:20:38,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:20:38,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:20:38,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:20:38,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:20:38,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:20:38,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:20:38,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:20:38,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:20:38,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:20:38,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:20:38,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:20:38,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:20:38,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:20:38,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:20:38,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:20:38,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:20:38,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:20:38,174 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 17:20:38,192 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:20:38,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:20:38,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:20:38,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:20:38,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:20:38,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:20:38,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:20:38,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:20:38,194 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:20:38,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:20:38,194 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:20:38,194 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 17:20:38,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:20:38,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:20:38,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:20:38,194 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 17:20:38,195 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 17:20:38,195 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 17:20:38,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:20:38,195 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 17:20:38,199 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:20:38,200 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:20:38,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:20:38,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:20:38,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:20:38,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:20:38,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:20:38,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:20:38,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:20:38,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:20:38,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:20:38,202 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_13eccaa5-ee5b-4472-907b-6a323655ba6f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d [2021-12-06 17:20:38,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:20:38,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:20:38,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:20:38,413 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:20:38,413 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:20:38,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2021-12-06 17:20:38,459 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/data/52946334c/9e5905568a37456aaa3f37a57cfbd151/FLAG32337345a [2021-12-06 17:20:38,890 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:20:38,891 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2021-12-06 17:20:38,902 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/data/52946334c/9e5905568a37456aaa3f37a57cfbd151/FLAG32337345a [2021-12-06 17:20:38,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/data/52946334c/9e5905568a37456aaa3f37a57cfbd151 [2021-12-06 17:20:38,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:20:38,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:20:38,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:20:38,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:20:38,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:20:38,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:20:38" (1/1) ... [2021-12-06 17:20:38,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6721c761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:38, skipping insertion in model container [2021-12-06 17:20:38,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:20:38" (1/1) ... [2021-12-06 17:20:38,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:20:38,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:20:39,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:20:39,200 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-06 17:20:39,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@263ad38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:39, skipping insertion in model container [2021-12-06 17:20:39,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:20:39,201 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-06 17:20:39,202 INFO L158 Benchmark]: Toolchain (without parser) took 287.01ms. Allocated memory was 79.7MB in the beginning and 98.6MB in the end (delta: 18.9MB). Free memory was 55.0MB in the beginning and 65.6MB in the end (delta: -10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 17:20:39,203 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:20:39,204 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.46ms. Allocated memory was 79.7MB in the beginning and 98.6MB in the end (delta: 18.9MB). Free memory was 54.8MB in the beginning and 65.6MB in the end (delta: -10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 17:20:39,206 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.46ms. Allocated memory was 79.7MB in the beginning and 98.6MB in the end (delta: 18.9MB). Free memory was 54.8MB in the beginning and 65.6MB in the end (delta: -10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 556]: 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_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/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_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/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_13eccaa5-ee5b-4472-907b-6a323655ba6f/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 cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:20:40,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:20:40,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:20:40,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:20:40,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:20:40,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:20:40,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:20:40,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:20:40,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:20:40,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:20:40,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:20:40,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:20:40,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:20:40,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:20:40,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:20:40,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:20:40,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:20:40,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:20:40,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:20:40,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:20:40,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:20:40,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:20:40,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:20:40,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:20:40,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:20:40,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:20:40,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:20:40,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:20:40,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:20:40,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:20:40,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:20:40,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:20:40,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:20:40,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:20:40,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:20:40,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:20:40,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:20:40,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:20:40,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:20:40,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:20:40,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:20:40,630 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-06 17:20:40,650 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:20:40,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:20:40,651 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:20:40,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:20:40,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:20:40,652 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:20:40,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:20:40,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:20:40,653 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:20:40,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:20:40,653 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:20:40,653 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 17:20:40,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:20:40,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:20:40,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:20:40,654 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 17:20:40,654 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 17:20:40,654 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 17:20:40,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:20:40,654 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 17:20:40,654 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 17:20:40,654 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 17:20:40,654 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:20:40,655 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:20:40,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:20:40,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:20:40,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:20:40,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:20:40,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:20:40,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:20:40,656 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 17:20:40,656 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 17:20:40,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:20:40,656 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 17:20:40,656 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_13eccaa5-ee5b-4472-907b-6a323655ba6f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d [2021-12-06 17:20:40,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:20:40,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:20:40,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:20:40,894 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:20:40,894 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:20:40,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2021-12-06 17:20:40,940 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/data/efce03218/6161db49825c41ce95ed0db9c8470aac/FLAGedb042819 [2021-12-06 17:20:41,375 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:20:41,376 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2021-12-06 17:20:41,388 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/data/efce03218/6161db49825c41ce95ed0db9c8470aac/FLAGedb042819 [2021-12-06 17:20:41,400 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/data/efce03218/6161db49825c41ce95ed0db9c8470aac [2021-12-06 17:20:41,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:20:41,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:20:41,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:20:41,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:20:41,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:20:41,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:20:41" (1/1) ... [2021-12-06 17:20:41,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47dde51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:41, skipping insertion in model container [2021-12-06 17:20:41,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:20:41" (1/1) ... [2021-12-06 17:20:41,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:20:41,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:20:41,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:20:41,669 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 17:20:41,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:20:41,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:20:41,706 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:20:41,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:20:41,764 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:20:41,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:41 WrapperNode [2021-12-06 17:20:41,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:20:41,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:20:41,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:20:41,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:20:41,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:41" (1/1) ... [2021-12-06 17:20:41,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:41" (1/1) ... [2021-12-06 17:20:41,803 INFO L137 Inliner]: procedures = 129, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2021-12-06 17:20:41,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:20:41,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:20:41,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:20:41,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:20:41,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:41" (1/1) ... [2021-12-06 17:20:41,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:41" (1/1) ... [2021-12-06 17:20:41,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:41" (1/1) ... [2021-12-06 17:20:41,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:41" (1/1) ... [2021-12-06 17:20:41,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:41" (1/1) ... [2021-12-06 17:20:41,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:41" (1/1) ... [2021-12-06 17:20:41,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:41" (1/1) ... [2021-12-06 17:20:41,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:20:41,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:20:41,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:20:41,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:20:41,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:41" (1/1) ... [2021-12-06 17:20:41,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:20:41,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:20:41,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:20:41,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:20:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 17:20:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 17:20:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure create_data [2021-12-06 17:20:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure create_data [2021-12-06 17:20:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:20:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 17:20:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 17:20:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 17:20:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 17:20:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 17:20:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 17:20:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 17:20:41,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:20:41,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:20:41,976 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:20:41,978 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:20:42,629 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:20:42,635 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:20:42,635 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-06 17:20:42,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:20:42 BoogieIcfgContainer [2021-12-06 17:20:42,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:20:42,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:20:42,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:20:42,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:20:42,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:20:41" (1/3) ... [2021-12-06 17:20:42,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca387df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:20:42, skipping insertion in model container [2021-12-06 17:20:42,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:20:41" (2/3) ... [2021-12-06 17:20:42,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca387df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:20:42, skipping insertion in model container [2021-12-06 17:20:42,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:20:42" (3/3) ... [2021-12-06 17:20:42,642 INFO L111 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test02-2.i [2021-12-06 17:20:42,646 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:20:42,646 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2021-12-06 17:20:42,677 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:20:42,682 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:20:42,682 INFO L340 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2021-12-06 17:20:42,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 93 states have (on average 2.161290322580645) internal successors, (201), 185 states have internal predecessors, (201), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:20:42,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-06 17:20:42,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:42,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-06 17:20:42,700 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:20:42,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:42,704 INFO L85 PathProgramCache]: Analyzing trace with hash 5052905, now seen corresponding path program 1 times [2021-12-06 17:20:42,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:20:42,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837751159] [2021-12-06 17:20:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:42,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:20:42,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:20:42,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:20:42,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 17:20:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:42,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 17:20:42,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:42,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:20:42,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:20:42,787 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:20:42,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837751159] [2021-12-06 17:20:42,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837751159] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:42,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:42,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:20:42,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124340938] [2021-12-06 17:20:42,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:42,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:20:42,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:20:42,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:20:42,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:20:42,814 INFO L87 Difference]: Start difference. First operand has 189 states, 93 states have (on average 2.161290322580645) internal successors, (201), 185 states have internal predecessors, (201), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:42,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:42,835 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2021-12-06 17:20:42,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:20:42,837 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-12-06 17:20:42,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:42,846 INFO L225 Difference]: With dead ends: 189 [2021-12-06 17:20:42,847 INFO L226 Difference]: Without dead ends: 187 [2021-12-06 17:20:42,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:20:42,852 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:42,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:20:42,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-12-06 17:20:42,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-12-06 17:20:42,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 92 states have (on average 2.108695652173913) internal successors, (194), 183 states have internal predecessors, (194), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:20:42,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 198 transitions. [2021-12-06 17:20:42,896 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 198 transitions. Word has length 4 [2021-12-06 17:20:42,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:42,896 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 198 transitions. [2021-12-06 17:20:42,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:42,896 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 198 transitions. [2021-12-06 17:20:42,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-06 17:20:42,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:42,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-06 17:20:42,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:20:43,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:20:43,098 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:20:43,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:43,099 INFO L85 PathProgramCache]: Analyzing trace with hash 5050693, now seen corresponding path program 1 times [2021-12-06 17:20:43,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:20:43,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130882984] [2021-12-06 17:20:43,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:43,100 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:20:43,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:20:43,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:20:43,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 17:20:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:43,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:20:43,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:43,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:20:43,230 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 17:20:43,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-12-06 17:20:43,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:20:43,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:20:43,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:20:43,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130882984] [2021-12-06 17:20:43,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130882984] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:43,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:43,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:20:43,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808895181] [2021-12-06 17:20:43,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:43,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:20:43,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:20:43,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:20:43,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:20:43,256 INFO L87 Difference]: Start difference. First operand 187 states and 198 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:43,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:43,549 INFO L93 Difference]: Finished difference Result 182 states and 193 transitions. [2021-12-06 17:20:43,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:20:43,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-12-06 17:20:43,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:43,551 INFO L225 Difference]: With dead ends: 182 [2021-12-06 17:20:43,551 INFO L226 Difference]: Without dead ends: 182 [2021-12-06 17:20:43,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:20:43,553 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 47 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:43,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 331 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 95 Invalid, 0 Unknown, 96 Unchecked, 0.3s Time] [2021-12-06 17:20:43,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-12-06 17:20:43,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-12-06 17:20:43,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 92 states have (on average 2.0543478260869565) internal successors, (189), 178 states have internal predecessors, (189), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:20:43,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 193 transitions. [2021-12-06 17:20:43,567 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 193 transitions. Word has length 4 [2021-12-06 17:20:43,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:43,567 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 193 transitions. [2021-12-06 17:20:43,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:43,567 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 193 transitions. [2021-12-06 17:20:43,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-06 17:20:43,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:43,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-06 17:20:43,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 17:20:43,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:20:43,769 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:20:43,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:43,771 INFO L85 PathProgramCache]: Analyzing trace with hash 5050694, now seen corresponding path program 1 times [2021-12-06 17:20:43,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:20:43,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164925713] [2021-12-06 17:20:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:43,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:20:43,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:20:43,776 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:20:43,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 17:20:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:43,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 17:20:43,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:43,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:20:43,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:20:43,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:20:43,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 17:20:43,967 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:20:43,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-12-06 17:20:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:20:43,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:20:43,982 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:20:43,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164925713] [2021-12-06 17:20:43,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164925713] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:43,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:43,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:20:43,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223901601] [2021-12-06 17:20:43,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:43,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:20:43,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:20:43,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:20:43,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:20:43,984 INFO L87 Difference]: Start difference. First operand 182 states and 193 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:44,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:44,474 INFO L93 Difference]: Finished difference Result 199 states and 213 transitions. [2021-12-06 17:20:44,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:20:44,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-12-06 17:20:44,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:44,476 INFO L225 Difference]: With dead ends: 199 [2021-12-06 17:20:44,476 INFO L226 Difference]: Without dead ends: 199 [2021-12-06 17:20:44,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:20:44,478 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 30 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:44,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 344 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 17:20:44,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-12-06 17:20:44,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 187. [2021-12-06 17:20:44,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 97 states have (on average 2.0309278350515463) internal successors, (197), 183 states have internal predecessors, (197), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:20:44,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 201 transitions. [2021-12-06 17:20:44,488 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 201 transitions. Word has length 4 [2021-12-06 17:20:44,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:44,488 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 201 transitions. [2021-12-06 17:20:44,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:44,488 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 201 transitions. [2021-12-06 17:20:44,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 17:20:44,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:44,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 17:20:44,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 17:20:44,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:20:44,690 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:20:44,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:44,693 INFO L85 PathProgramCache]: Analyzing trace with hash 156571597, now seen corresponding path program 1 times [2021-12-06 17:20:44,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:20:44,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523246769] [2021-12-06 17:20:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:44,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:20:44,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:20:44,699 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:20:44,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 17:20:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:44,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:20:44,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:44,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:20:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:20:44,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:20:44,750 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:20:44,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523246769] [2021-12-06 17:20:44,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523246769] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:44,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:44,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:20:44,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825524668] [2021-12-06 17:20:44,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:44,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:20:44,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:20:44,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:20:44,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:20:44,752 INFO L87 Difference]: Start difference. First operand 187 states and 201 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:45,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:45,016 INFO L93 Difference]: Finished difference Result 210 states and 224 transitions. [2021-12-06 17:20:45,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:20:45,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-06 17:20:45,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:45,018 INFO L225 Difference]: With dead ends: 210 [2021-12-06 17:20:45,018 INFO L226 Difference]: Without dead ends: 210 [2021-12-06 17:20:45,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:20:45,019 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 65 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:45,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 232 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:20:45,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-12-06 17:20:45,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 185. [2021-12-06 17:20:45,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 97 states have (on average 2.0) internal successors, (194), 181 states have internal predecessors, (194), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:20:45,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 198 transitions. [2021-12-06 17:20:45,031 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 198 transitions. Word has length 5 [2021-12-06 17:20:45,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:45,031 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 198 transitions. [2021-12-06 17:20:45,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:45,031 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 198 transitions. [2021-12-06 17:20:45,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 17:20:45,032 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:45,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 17:20:45,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 17:20:45,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:20:45,234 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:20:45,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:45,235 INFO L85 PathProgramCache]: Analyzing trace with hash 156571598, now seen corresponding path program 1 times [2021-12-06 17:20:45,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:20:45,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623510663] [2021-12-06 17:20:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:45,237 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:20:45,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:20:45,239 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:20:45,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 17:20:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:45,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 17:20:45,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:45,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:20:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:20:45,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:20:45,313 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:20:45,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623510663] [2021-12-06 17:20:45,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623510663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:45,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:45,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:20:45,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157597918] [2021-12-06 17:20:45,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:45,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:20:45,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:20:45,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:20:45,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:20:45,314 INFO L87 Difference]: Start difference. First operand 185 states and 198 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:45,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:45,607 INFO L93 Difference]: Finished difference Result 183 states and 195 transitions. [2021-12-06 17:20:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:20:45,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-06 17:20:45,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:45,609 INFO L225 Difference]: With dead ends: 183 [2021-12-06 17:20:45,609 INFO L226 Difference]: Without dead ends: 183 [2021-12-06 17:20:45,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:20:45,610 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 12 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:45,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 274 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:20:45,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-12-06 17:20:45,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-12-06 17:20:45,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 97 states have (on average 1.9690721649484537) internal successors, (191), 179 states have internal predecessors, (191), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:20:45,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 195 transitions. [2021-12-06 17:20:45,620 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 195 transitions. Word has length 5 [2021-12-06 17:20:45,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:45,620 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 195 transitions. [2021-12-06 17:20:45,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:45,620 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 195 transitions. [2021-12-06 17:20:45,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 17:20:45,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:45,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:45,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 17:20:45,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:20:45,822 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:20:45,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:45,823 INFO L85 PathProgramCache]: Analyzing trace with hash 141453102, now seen corresponding path program 1 times [2021-12-06 17:20:45,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:20:45,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902761570] [2021-12-06 17:20:45,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:45,825 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:20:45,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:20:45,827 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:20:45,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 17:20:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:45,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 17:20:45,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:45,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:20:45,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:20:45,915 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:20:45,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902761570] [2021-12-06 17:20:45,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902761570] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:45,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:45,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:20:45,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550789379] [2021-12-06 17:20:45,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:45,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:20:45,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:20:45,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:20:45,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:20:45,917 INFO L87 Difference]: Start difference. First operand 183 states and 195 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:46,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:46,138 INFO L93 Difference]: Finished difference Result 207 states and 219 transitions. [2021-12-06 17:20:46,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:20:46,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-12-06 17:20:46,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:46,139 INFO L225 Difference]: With dead ends: 207 [2021-12-06 17:20:46,139 INFO L226 Difference]: Without dead ends: 207 [2021-12-06 17:20:46,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:20:46,140 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 54 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:46,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 238 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:20:46,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-06 17:20:46,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 182. [2021-12-06 17:20:46,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 97 states have (on average 1.9484536082474226) internal successors, (189), 178 states have internal predecessors, (189), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:20:46,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 193 transitions. [2021-12-06 17:20:46,146 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 193 transitions. Word has length 7 [2021-12-06 17:20:46,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:46,146 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 193 transitions. [2021-12-06 17:20:46,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:46,146 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 193 transitions. [2021-12-06 17:20:46,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 17:20:46,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:46,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:46,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 17:20:46,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:20:46,348 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:20:46,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:46,349 INFO L85 PathProgramCache]: Analyzing trace with hash 666573431, now seen corresponding path program 1 times [2021-12-06 17:20:46,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:20:46,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978642389] [2021-12-06 17:20:46,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:46,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:20:46,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:20:46,354 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:20:46,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 17:20:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:46,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 17:20:46,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:46,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:20:46,478 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:20:46,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-12-06 17:20:46,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 17:20:46,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 17:20:46,540 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 15 treesize of output 7 [2021-12-06 17:20:46,543 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 15 treesize of output 7 [2021-12-06 17:20:46,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:20:46,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:20:46,556 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:20:46,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978642389] [2021-12-06 17:20:46,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978642389] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:46,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:46,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:20:46,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819578083] [2021-12-06 17:20:46,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:46,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:20:46,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:20:46,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:20:46,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:20:46,557 INFO L87 Difference]: Start difference. First operand 182 states and 193 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:46,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:46,941 INFO L93 Difference]: Finished difference Result 184 states and 196 transitions. [2021-12-06 17:20:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:20:46,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-06 17:20:46,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:46,942 INFO L225 Difference]: With dead ends: 184 [2021-12-06 17:20:46,942 INFO L226 Difference]: Without dead ends: 184 [2021-12-06 17:20:46,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:20:46,943 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 5 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:46,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 606 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:20:46,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-12-06 17:20:46,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2021-12-06 17:20:46,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 98 states have (on average 1.9387755102040816) internal successors, (190), 179 states have internal predecessors, (190), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:20:46,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 194 transitions. [2021-12-06 17:20:46,949 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 194 transitions. Word has length 10 [2021-12-06 17:20:46,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:46,950 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 194 transitions. [2021-12-06 17:20:46,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:46,950 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 194 transitions. [2021-12-06 17:20:46,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 17:20:46,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:46,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:46,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 17:20:47,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:20:47,152 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting create_dataErr0REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:20:47,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:47,154 INFO L85 PathProgramCache]: Analyzing trace with hash 623653565, now seen corresponding path program 1 times [2021-12-06 17:20:47,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:20:47,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66547571] [2021-12-06 17:20:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:47,155 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:20:47,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:20:47,157 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:20:47,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 17:20:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:47,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:20:47,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:47,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:20:47,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:20:47,291 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:20:47,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66547571] [2021-12-06 17:20:47,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66547571] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:47,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:47,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:20:47,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090924327] [2021-12-06 17:20:47,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:47,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:20:47,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:20:47,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:20:47,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:20:47,293 INFO L87 Difference]: Start difference. First operand 183 states and 194 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:47,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:47,320 INFO L93 Difference]: Finished difference Result 260 states and 275 transitions. [2021-12-06 17:20:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:20:47,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 17:20:47,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:47,322 INFO L225 Difference]: With dead ends: 260 [2021-12-06 17:20:47,322 INFO L226 Difference]: Without dead ends: 260 [2021-12-06 17:20:47,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:20:47,323 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 80 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:47,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 548 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:20:47,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-12-06 17:20:47,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 224. [2021-12-06 17:20:47,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 138 states have (on average 1.963768115942029) internal successors, (271), 219 states have internal predecessors, (271), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:20:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 275 transitions. [2021-12-06 17:20:47,329 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 275 transitions. Word has length 12 [2021-12-06 17:20:47,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:47,329 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 275 transitions. [2021-12-06 17:20:47,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:47,329 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 275 transitions. [2021-12-06 17:20:47,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 17:20:47,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:47,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:47,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 17:20:47,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:20:47,531 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting create_dataErr4REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:20:47,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:47,532 INFO L85 PathProgramCache]: Analyzing trace with hash -2141569776, now seen corresponding path program 1 times [2021-12-06 17:20:47,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:20:47,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597780972] [2021-12-06 17:20:47,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:47,534 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:20:47,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:20:47,537 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:20:47,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 17:20:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:47,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 17:20:47,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:47,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:20:47,707 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 17:20:47,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-12-06 17:20:47,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:20:47,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:20:47,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:20:47,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597780972] [2021-12-06 17:20:47,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597780972] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:47,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:47,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:20:47,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589654299] [2021-12-06 17:20:47,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:47,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:20:47,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:20:47,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:20:47,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:20:47,722 INFO L87 Difference]: Start difference. First operand 224 states and 275 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:47,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:47,725 INFO L93 Difference]: Finished difference Result 223 states and 273 transitions. [2021-12-06 17:20:47,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:20:47,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 17:20:47,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:47,727 INFO L225 Difference]: With dead ends: 223 [2021-12-06 17:20:47,727 INFO L226 Difference]: Without dead ends: 223 [2021-12-06 17:20:47,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:20:47,727 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:47,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 271 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 100 Unchecked, 0.0s Time] [2021-12-06 17:20:47,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-12-06 17:20:47,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2021-12-06 17:20:47,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 138 states have (on average 1.9492753623188406) internal successors, (269), 218 states have internal predecessors, (269), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:20:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 273 transitions. [2021-12-06 17:20:47,737 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 273 transitions. Word has length 13 [2021-12-06 17:20:47,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:47,737 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 273 transitions. [2021-12-06 17:20:47,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 273 transitions. [2021-12-06 17:20:47,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 17:20:47,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:47,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:47,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 17:20:47,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:20:47,939 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting create_dataErr5REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:20:47,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:47,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2141569775, now seen corresponding path program 1 times [2021-12-06 17:20:47,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:20:47,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244703733] [2021-12-06 17:20:47,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:47,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:20:47,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:20:47,944 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:20:47,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 17:20:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:48,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:20:48,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:48,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:20:48,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 17:20:48,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-06 17:20:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:20:48,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:20:48,102 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:20:48,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244703733] [2021-12-06 17:20:48,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244703733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:48,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:48,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:20:48,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526078421] [2021-12-06 17:20:48,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:48,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:20:48,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:20:48,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:20:48,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:20:48,104 INFO L87 Difference]: Start difference. First operand 223 states and 273 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:48,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:48,448 INFO L93 Difference]: Finished difference Result 254 states and 309 transitions. [2021-12-06 17:20:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:20:48,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 17:20:48,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:48,450 INFO L225 Difference]: With dead ends: 254 [2021-12-06 17:20:48,450 INFO L226 Difference]: Without dead ends: 254 [2021-12-06 17:20:48,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:20:48,451 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 61 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:48,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 211 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:20:48,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-12-06 17:20:48,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 230. [2021-12-06 17:20:48,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 154 states have (on average 1.8506493506493507) internal successors, (285), 225 states have internal predecessors, (285), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:20:48,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 289 transitions. [2021-12-06 17:20:48,457 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 289 transitions. Word has length 13 [2021-12-06 17:20:48,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:48,457 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 289 transitions. [2021-12-06 17:20:48,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:48,457 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 289 transitions. [2021-12-06 17:20:48,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 17:20:48,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:48,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:48,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-06 17:20:48,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:20:48,659 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting create_dataErr10REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:20:48,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:48,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2060989769, now seen corresponding path program 1 times [2021-12-06 17:20:48,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:20:48,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510302780] [2021-12-06 17:20:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:48,662 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:20:48,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:20:48,664 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:20:48,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 17:20:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:48,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 17:20:48,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:48,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:20:48,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:20:48,734 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:20:48,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510302780] [2021-12-06 17:20:48,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510302780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:48,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:48,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:20:48,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127146896] [2021-12-06 17:20:48,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:48,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:20:48,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:20:48,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:20:48,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:20:48,735 INFO L87 Difference]: Start difference. First operand 230 states and 289 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:48,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:48,767 INFO L93 Difference]: Finished difference Result 243 states and 305 transitions. [2021-12-06 17:20:48,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:20:48,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 17:20:48,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:48,769 INFO L225 Difference]: With dead ends: 243 [2021-12-06 17:20:48,769 INFO L226 Difference]: Without dead ends: 243 [2021-12-06 17:20:48,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:20:48,770 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 7 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:48,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 346 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:20:48,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-12-06 17:20:48,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 232. [2021-12-06 17:20:48,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 156 states have (on average 1.8397435897435896) internal successors, (287), 227 states have internal predecessors, (287), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:20:48,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 291 transitions. [2021-12-06 17:20:48,776 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 291 transitions. Word has length 16 [2021-12-06 17:20:48,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:48,776 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 291 transitions. [2021-12-06 17:20:48,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:48,776 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 291 transitions. [2021-12-06 17:20:48,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 17:20:48,776 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:48,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:48,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 17:20:48,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:20:48,977 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting create_dataErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:20:48,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:48,977 INFO L85 PathProgramCache]: Analyzing trace with hash -2060989719, now seen corresponding path program 1 times [2021-12-06 17:20:48,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:20:48,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081544113] [2021-12-06 17:20:48,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:48,978 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:20:48,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:20:48,978 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:20:48,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 17:20:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:49,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 17:20:49,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:20:49,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:20:49,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:20:49,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081544113] [2021-12-06 17:20:49,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081544113] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:49,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:49,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:20:49,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721734130] [2021-12-06 17:20:49,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:49,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:20:49,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:20:49,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:20:49,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:20:49,051 INFO L87 Difference]: Start difference. First operand 232 states and 291 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:49,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:49,275 INFO L93 Difference]: Finished difference Result 229 states and 267 transitions. [2021-12-06 17:20:49,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:20:49,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 17:20:49,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:49,276 INFO L225 Difference]: With dead ends: 229 [2021-12-06 17:20:49,276 INFO L226 Difference]: Without dead ends: 229 [2021-12-06 17:20:49,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:20:49,277 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 49 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:49,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 203 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:20:49,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-06 17:20:49,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 221. [2021-12-06 17:20:49,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 156 states have (on average 1.6474358974358974) internal successors, (257), 216 states have internal predecessors, (257), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:20:49,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 261 transitions. [2021-12-06 17:20:49,282 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 261 transitions. Word has length 16 [2021-12-06 17:20:49,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:49,282 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 261 transitions. [2021-12-06 17:20:49,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:49,283 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 261 transitions. [2021-12-06 17:20:49,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 17:20:49,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:49,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:49,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-06 17:20:49,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:20:49,484 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting create_dataErr8REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:20:49,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:49,485 INFO L85 PathProgramCache]: Analyzing trace with hash 533828155, now seen corresponding path program 1 times [2021-12-06 17:20:49,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:20:49,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326678610] [2021-12-06 17:20:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:49,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:20:49,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:20:49,490 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:20:49,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 17:20:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:49,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:20:49,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:49,600 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-06 17:20:49,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 18 [2021-12-06 17:20:49,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:20:49,634 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 26 treesize of output 14 [2021-12-06 17:20:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:20:49,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:20:49,640 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:20:49,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326678610] [2021-12-06 17:20:49,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326678610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:49,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:49,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:20:49,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358338754] [2021-12-06 17:20:49,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:49,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:20:49,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:20:49,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:20:49,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:20:49,642 INFO L87 Difference]: Start difference. First operand 221 states and 261 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:50,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:50,060 INFO L93 Difference]: Finished difference Result 226 states and 267 transitions. [2021-12-06 17:20:50,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:20:50,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-06 17:20:50,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:50,061 INFO L225 Difference]: With dead ends: 226 [2021-12-06 17:20:50,061 INFO L226 Difference]: Without dead ends: 226 [2021-12-06 17:20:50,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:20:50,062 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 4 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:50,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 428 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 17:20:50,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-12-06 17:20:50,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 225. [2021-12-06 17:20:50,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 160 states have (on average 1.64375) internal successors, (263), 220 states have internal predecessors, (263), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:20:50,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 267 transitions. [2021-12-06 17:20:50,067 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 267 transitions. Word has length 17 [2021-12-06 17:20:50,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:50,067 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 267 transitions. [2021-12-06 17:20:50,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:50,067 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 267 transitions. [2021-12-06 17:20:50,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 17:20:50,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:50,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:50,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-06 17:20:50,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:20:50,268 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting create_dataErr9REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:20:50,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:50,269 INFO L85 PathProgramCache]: Analyzing trace with hash 533828156, now seen corresponding path program 1 times [2021-12-06 17:20:50,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:20:50,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912675488] [2021-12-06 17:20:50,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:50,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:20:50,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:20:50,287 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:20:50,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 17:20:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:50,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:20:50,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:50,439 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 17:20:50,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 17:20:50,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:20:50,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:20:50,516 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 21 treesize of output 9 [2021-12-06 17:20:50,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 17:20:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:20:50,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:20:50,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:20:50,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912675488] [2021-12-06 17:20:50,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912675488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:50,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:50,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:20:50,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324029136] [2021-12-06 17:20:50,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:50,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:20:50,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:20:50,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:20:50,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:20:50,534 INFO L87 Difference]: Start difference. First operand 225 states and 267 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:51,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:51,219 INFO L93 Difference]: Finished difference Result 227 states and 267 transitions. [2021-12-06 17:20:51,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:20:51,220 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-06 17:20:51,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:51,221 INFO L225 Difference]: With dead ends: 227 [2021-12-06 17:20:51,221 INFO L226 Difference]: Without dead ends: 227 [2021-12-06 17:20:51,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:20:51,222 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 4 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:51,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 508 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 17:20:51,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-12-06 17:20:51,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2021-12-06 17:20:51,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 160 states have (on average 1.63125) internal successors, (261), 220 states have internal predecessors, (261), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:20:51,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 265 transitions. [2021-12-06 17:20:51,227 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 265 transitions. Word has length 17 [2021-12-06 17:20:51,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:51,227 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 265 transitions. [2021-12-06 17:20:51,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:51,227 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 265 transitions. [2021-12-06 17:20:51,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 17:20:51,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:51,227 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] [2021-12-06 17:20:51,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 17:20:51,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:20:51,428 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting create_dataErr8REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:20:51,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:51,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1553049946, now seen corresponding path program 1 times [2021-12-06 17:20:51,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:20:51,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938845946] [2021-12-06 17:20:51,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:51,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:20:51,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:20:51,429 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:20:51,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 17:20:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:51,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 17:20:51,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:51,557 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 17:20:51,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-12-06 17:20:51,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:20:51,652 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 17:20:51,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-12-06 17:20:51,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-12-06 17:20:51,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 17:20:51,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:20:51,716 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_230 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_230) c_create_data_~data~0.base) (bvadd c_create_data_~data~0.offset (_ bv4 32))))))) (_ bv1 1)))) is different from false [2021-12-06 17:20:51,726 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_230 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse0) v_ArrVal_230) c_create_data_~data~0.base) .cse0))))))))))) is different from false [2021-12-06 17:20:51,745 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:20:51,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2021-12-06 17:20:51,748 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 58 treesize of output 46 [2021-12-06 17:20:51,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-12-06 17:20:51,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-06 17:20:51,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:20:51,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938845946] [2021-12-06 17:20:51,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938845946] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:20:51,808 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:20:51,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2021-12-06 17:20:51,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115419747] [2021-12-06 17:20:51,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:20:51,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:20:51,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:20:51,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:20:51,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=40, Unknown=2, NotChecked=26, Total=90 [2021-12-06 17:20:51,809 INFO L87 Difference]: Start difference. First operand 225 states and 265 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:52,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:52,362 INFO L93 Difference]: Finished difference Result 232 states and 269 transitions. [2021-12-06 17:20:52,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:20:52,362 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 17:20:52,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:52,364 INFO L225 Difference]: With dead ends: 232 [2021-12-06 17:20:52,364 INFO L226 Difference]: Without dead ends: 232 [2021-12-06 17:20:52,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=50, Unknown=2, NotChecked=30, Total=110 [2021-12-06 17:20:52,365 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 28 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 296 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:52,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 594 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 235 Invalid, 0 Unknown, 296 Unchecked, 0.5s Time] [2021-12-06 17:20:52,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-12-06 17:20:52,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 224. [2021-12-06 17:20:52,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 160 states have (on average 1.61875) internal successors, (259), 219 states have internal predecessors, (259), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:20:52,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 263 transitions. [2021-12-06 17:20:52,370 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 263 transitions. Word has length 22 [2021-12-06 17:20:52,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:52,370 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 263 transitions. [2021-12-06 17:20:52,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:52,371 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 263 transitions. [2021-12-06 17:20:52,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 17:20:52,371 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:52,371 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] [2021-12-06 17:20:52,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-06 17:20:52,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:20:52,573 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting create_dataErr9REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:20:52,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:52,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1553049945, now seen corresponding path program 1 times [2021-12-06 17:20:52,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:20:52,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151932533] [2021-12-06 17:20:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:52,576 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:20:52,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:20:52,578 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:20:52,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 17:20:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:52,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 17:20:52,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:52,719 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 17:20:52,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 17:20:52,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-06 17:20:52,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:20:52,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:20:52,861 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 17:20:52,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-12-06 17:20:52,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 17:20:52,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-12-06 17:20:52,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 17:20:52,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:20:52,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:20:53,370 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_274 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_274) c_create_data_~data~0.base) (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_274 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_275 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_274) c_create_data_~data~0.base) .cse2) (bvmul c_create_data_~counter~0 (_ bv4 32))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_275) c_create_data_~data~0.base) .cse2)))))) is different from false [2021-12-06 17:20:53,415 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_274 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_275 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_274) c_create_data_~data~0.base) .cse1) (_ bv8 32) (bvmul c_create_data_~counter~0 (_ bv4 32))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_275) c_create_data_~data~0.base) .cse1)))))) (forall ((v_ArrVal_274 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (let ((.cse4 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4) v_ArrVal_274) c_create_data_~data~0.base) .cse4))) (.cse3 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd .cse2 (_ bv4 32) .cse3) (bvadd .cse2 (_ bv8 32) .cse3))))) is different from false [2021-12-06 17:20:53,468 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_274 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_275 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_274) c_create_data_~data~0.base) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_275) c_create_data_~data~0.base) .cse1)))))) (forall ((v_ArrVal_274 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (let ((.cse3 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3) v_ArrVal_274) c_create_data_~data~0.base) .cse3)))) (bvule (bvadd .cse2 (_ bv4 32)) (bvadd .cse2 (_ bv8 32)))))) is different from false [2021-12-06 17:20:53,484 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:20:53,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2021-12-06 17:20:53,487 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 54 treesize of output 36 [2021-12-06 17:20:53,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-12-06 17:20:53,509 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:20:53,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2021-12-06 17:20:53,519 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:20:53,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2021-12-06 17:20:53,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:20:53,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-12-06 17:20:53,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:20:53,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-12-06 17:20:53,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-06 17:20:53,615 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:20:53,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151932533] [2021-12-06 17:20:53,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151932533] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:20:53,615 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:20:53,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-12-06 17:20:53,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769543832] [2021-12-06 17:20:53,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:20:53,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 17:20:53,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:20:53,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 17:20:53,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=102, Unknown=3, NotChecked=66, Total=210 [2021-12-06 17:20:53,617 INFO L87 Difference]: Start difference. First operand 224 states and 263 transitions. Second operand has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:56,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:56,581 INFO L93 Difference]: Finished difference Result 236 states and 275 transitions. [2021-12-06 17:20:56,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:20:56,582 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 17:20:56,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:56,583 INFO L225 Difference]: With dead ends: 236 [2021-12-06 17:20:56,583 INFO L226 Difference]: Without dead ends: 236 [2021-12-06 17:20:56,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=159, Unknown=3, NotChecked=84, Total=306 [2021-12-06 17:20:56,584 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 10 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 264 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:56,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1083 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 669 Invalid, 0 Unknown, 264 Unchecked, 2.7s Time] [2021-12-06 17:20:56,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-12-06 17:20:56,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2021-12-06 17:20:56,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 170 states have (on average 1.5823529411764705) internal successors, (269), 229 states have internal predecessors, (269), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:20:56,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 273 transitions. [2021-12-06 17:20:56,592 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 273 transitions. Word has length 22 [2021-12-06 17:20:56,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:56,592 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 273 transitions. [2021-12-06 17:20:56,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:20:56,592 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 273 transitions. [2021-12-06 17:20:56,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 17:20:56,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:56,593 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:56,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-06 17:20:56,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:20:56,793 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting create_dataErr9REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:20:56,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:56,794 INFO L85 PathProgramCache]: Analyzing trace with hash 767728924, now seen corresponding path program 2 times [2021-12-06 17:20:56,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:20:56,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123135539] [2021-12-06 17:20:56,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:20:56,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:20:56,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:20:56,796 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:20:56,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 17:20:56,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:20:56,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:20:56,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 17:20:56,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:56,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-12-06 17:20:56,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-06 17:20:56,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:20:57,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:20:57,115 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 17:20:57,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-12-06 17:20:57,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 17:20:57,247 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 17:20:57,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-12-06 17:20:57,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 17:20:57,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2021-12-06 17:20:57,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 17:20:57,358 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:20:57,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:20:57,804 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_337 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_337) c_create_data_~data~0.base) .cse0) (_ bv8 32) (bvmul c_create_data_~counter~0 (_ bv4 32))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_336) c_create_data_~data~0.base) .cse0))))) (forall ((v_ArrVal_337 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_337) c_create_data_~data~0.base) (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (.cse2 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd .cse1 (_ bv4 32) .cse2) (bvadd .cse1 (_ bv8 32) .cse2))))) is different from false [2021-12-06 17:20:57,841 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_337 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2) v_ArrVal_337) c_create_data_~data~0.base) .cse2))) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd .cse0 (_ bv4 32) .cse1) (bvadd .cse0 (_ bv8 32) .cse1)))) (forall ((v_ArrVal_336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_337 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_337) c_create_data_~data~0.base) .cse4) (_ bv8 32) (bvmul c_create_data_~counter~0 (_ bv4 32))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_336) c_create_data_~data~0.base) .cse4))))))) is different from false [2021-12-06 17:20:57,914 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_337 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2) v_ArrVal_337) c_create_data_~data~0.base) .cse2))) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd .cse0 (_ bv8 32) .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_337 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_337) c_create_data_~data~0.base) .cse4) (bvmul c_create_data_~counter~0 (_ bv4 32)) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_336) c_create_data_~data~0.base) .cse4))))))) is different from false [2021-12-06 17:20:57,980 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_334 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_337 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_334) (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_335) c_create_data_~data~0.base) .cse2) v_ArrVal_337) c_create_data_~data~0.base) .cse2))) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd (_ bv8 32) .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_334 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_337 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_335)) (.cse4 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse3 (select (select .cse5 c_create_data_~data~0.base) .cse4))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_334) .cse3 v_ArrVal_337) c_create_data_~data~0.base) .cse4) (bvmul c_create_data_~counter~0 (_ bv4 32)) (_ bv12 32)) (select |c_#length| (select (select (store .cse5 .cse3 v_ArrVal_336) c_create_data_~data~0.base) .cse4))))))) is different from false [2021-12-06 17:20:58,151 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_334 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_337 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse1 (let ((.cse3 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3))) (store (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_334) (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_335) c_create_data_~data~0.base) .cse3) v_ArrVal_337)) c_create_data_~data~0.base) .cse3)))) (bvule (bvadd (_ bv8 32) .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_334 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_337 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse6))) (let ((.cse7 (store |c_#memory_$Pointer$.base| .cse4 v_ArrVal_335))) (let ((.cse5 (select (select .cse7 c_create_data_~data~0.base) .cse6))) (bvule (bvadd (bvmul c_create_data_~counter~0 (_ bv4 32)) (select (select (store (store |c_#memory_$Pointer$.offset| .cse4 v_ArrVal_334) .cse5 v_ArrVal_337) c_create_data_~data~0.base) .cse6) (_ bv12 32)) (select |c_#length| (select (select (store .cse7 .cse5 v_ArrVal_336) c_create_data_~data~0.base) .cse6))))))))) is different from false [2021-12-06 17:20:58,222 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_334 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_337 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_334) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_335) c_create_data_~data~0.base) .cse2) v_ArrVal_337)) c_create_data_~data~0.base) .cse2)))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_334 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_337 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (bvadd c_create_data_~data~0.offset (_ bv4 32)))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse5))) (let ((.cse6 (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_335))) (let ((.cse4 (select (select .cse6 c_create_data_~data~0.base) .cse5))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_334) .cse4 v_ArrVal_337) c_create_data_~data~0.base) .cse5) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse4 v_ArrVal_336) c_create_data_~data~0.base) .cse5))))))))) is different from false [2021-12-06 17:20:58,241 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:20:58,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 80 [2021-12-06 17:20:58,249 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:20:58,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 60 [2021-12-06 17:20:58,254 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 102 treesize of output 84 [2021-12-06 17:20:58,257 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 174 treesize of output 144 [2021-12-06 17:20:58,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 86 [2021-12-06 17:20:58,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 100 [2021-12-06 17:20:58,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 62 [2021-12-06 17:20:58,346 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:20:58,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 90 [2021-12-06 17:20:58,358 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:20:58,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 60 [2021-12-06 17:20:58,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:20:58,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 56 [2021-12-06 17:20:58,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:20:58,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 32 [2021-12-06 17:20:58,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 17:20:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2021-12-06 17:20:58,472 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:20:58,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123135539] [2021-12-06 17:20:58,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123135539] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:20:58,473 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:20:58,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2021-12-06 17:20:58,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447456649] [2021-12-06 17:20:58,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:20:58,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 17:20:58,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:20:58,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 17:20:58,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=144, Unknown=6, NotChecked=174, Total=380 [2021-12-06 17:20:58,474 INFO L87 Difference]: Start difference. First operand 234 states and 273 transitions. Second operand has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:21:01,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:01,719 INFO L93 Difference]: Finished difference Result 246 states and 285 transitions. [2021-12-06 17:21:01,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:21:01,720 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-06 17:21:01,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:01,721 INFO L225 Difference]: With dead ends: 246 [2021-12-06 17:21:01,721 INFO L226 Difference]: Without dead ends: 246 [2021-12-06 17:21:01,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=85, Invalid=239, Unknown=6, NotChecked=222, Total=552 [2021-12-06 17:21:01,722 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 22 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 551 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:01,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1166 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 537 Invalid, 0 Unknown, 551 Unchecked, 2.7s Time] [2021-12-06 17:21:01,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-12-06 17:21:01,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 244. [2021-12-06 17:21:01,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 180 states have (on average 1.55) internal successors, (279), 239 states have internal predecessors, (279), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:21:01,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 283 transitions. [2021-12-06 17:21:01,726 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 283 transitions. Word has length 27 [2021-12-06 17:21:01,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:01,726 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 283 transitions. [2021-12-06 17:21:01,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:21:01,727 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 283 transitions. [2021-12-06 17:21:01,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 17:21:01,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:01,727 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:01,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-06 17:21:01,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:21:01,928 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting create_dataErr9REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:01,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:01,929 INFO L85 PathProgramCache]: Analyzing trace with hash 852563911, now seen corresponding path program 3 times [2021-12-06 17:21:01,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:01,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920688138] [2021-12-06 17:21:01,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:21:01,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:01,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:01,930 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:01,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 17:21:02,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 17:21:02,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:21:02,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 17:21:02,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:21:02,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:21:02,347 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:21:02,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:02,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920688138] [2021-12-06 17:21:02,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1920688138] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:21:02,347 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:21:02,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-12-06 17:21:02,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370670429] [2021-12-06 17:21:02,348 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:21:02,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:21:02,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:02,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:21:02,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:21:02,348 INFO L87 Difference]: Start difference. First operand 244 states and 283 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:21:02,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:02,443 INFO L93 Difference]: Finished difference Result 241 states and 277 transitions. [2021-12-06 17:21:02,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:21:02,444 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-06 17:21:02,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:02,445 INFO L225 Difference]: With dead ends: 241 [2021-12-06 17:21:02,445 INFO L226 Difference]: Without dead ends: 241 [2021-12-06 17:21:02,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:21:02,445 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 94 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:02,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 1123 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:21:02,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-12-06 17:21:02,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2021-12-06 17:21:02,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 176 states have (on average 1.5397727272727273) internal successors, (271), 234 states have internal predecessors, (271), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:21:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 275 transitions. [2021-12-06 17:21:02,450 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 275 transitions. Word has length 32 [2021-12-06 17:21:02,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:02,450 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 275 transitions. [2021-12-06 17:21:02,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:21:02,451 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 275 transitions. [2021-12-06 17:21:02,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 17:21:02,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:02,452 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:02,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-06 17:21:02,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:21:02,652 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting create_dataErr24REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:02,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:02,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1939829061, now seen corresponding path program 1 times [2021-12-06 17:21:02,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:02,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297786264] [2021-12-06 17:21:02,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:02,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:02,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:02,654 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:02,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-06 17:21:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:02,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:21:02,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:02,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:21:02,814 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:21:02,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:21:02,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:02,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297786264] [2021-12-06 17:21:02,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297786264] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:02,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:21:02,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:21:02,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063189517] [2021-12-06 17:21:02,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:02,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:21:02,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:02,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:21:02,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:21:02,816 INFO L87 Difference]: Start difference. First operand 239 states and 275 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:21:03,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:03,032 INFO L93 Difference]: Finished difference Result 241 states and 269 transitions. [2021-12-06 17:21:03,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:21:03,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-12-06 17:21:03,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:03,034 INFO L225 Difference]: With dead ends: 241 [2021-12-06 17:21:03,034 INFO L226 Difference]: Without dead ends: 241 [2021-12-06 17:21:03,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:21:03,035 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 22 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:03,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 233 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:21:03,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-12-06 17:21:03,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 235. [2021-12-06 17:21:03,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 176 states have (on average 1.4715909090909092) internal successors, (259), 230 states have internal predecessors, (259), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:21:03,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 263 transitions. [2021-12-06 17:21:03,039 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 263 transitions. Word has length 41 [2021-12-06 17:21:03,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:03,039 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 263 transitions. [2021-12-06 17:21:03,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:21:03,039 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 263 transitions. [2021-12-06 17:21:03,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 17:21:03,040 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:03,040 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:03,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-12-06 17:21:03,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:21:03,241 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting create_dataErr25REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:03,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:03,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1939829060, now seen corresponding path program 1 times [2021-12-06 17:21:03,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:03,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258429167] [2021-12-06 17:21:03,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:03,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:03,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:03,246 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:03,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-06 17:21:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:03,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 17:21:03,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:03,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:21:03,498 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:21:03,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:21:03,498 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:03,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258429167] [2021-12-06 17:21:03,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258429167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:03,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:21:03,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:21:03,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907131331] [2021-12-06 17:21:03,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:03,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:21:03,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:03,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:21:03,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:21:03,499 INFO L87 Difference]: Start difference. First operand 235 states and 263 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:21:03,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:03,811 INFO L93 Difference]: Finished difference Result 237 states and 257 transitions. [2021-12-06 17:21:03,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:21:03,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-12-06 17:21:03,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:03,813 INFO L225 Difference]: With dead ends: 237 [2021-12-06 17:21:03,813 INFO L226 Difference]: Without dead ends: 237 [2021-12-06 17:21:03,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:21:03,814 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 18 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:03,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 232 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:21:03,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-06 17:21:03,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 231. [2021-12-06 17:21:03,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 176 states have (on average 1.4034090909090908) internal successors, (247), 226 states have internal predecessors, (247), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:21:03,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 251 transitions. [2021-12-06 17:21:03,818 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 251 transitions. Word has length 41 [2021-12-06 17:21:03,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:03,818 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 251 transitions. [2021-12-06 17:21:03,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:21:03,818 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 251 transitions. [2021-12-06 17:21:03,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 17:21:03,819 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:03,819 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:03,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-06 17:21:04,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:21:04,019 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:04,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:04,020 INFO L85 PathProgramCache]: Analyzing trace with hash -663465002, now seen corresponding path program 1 times [2021-12-06 17:21:04,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:04,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540592704] [2021-12-06 17:21:04,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:04,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:04,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:04,022 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:04,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-06 17:21:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:04,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 17:21:04,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:04,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:21:04,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:21:04,434 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 15 treesize of output 9 [2021-12-06 17:21:05,085 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-12-06 17:21:05,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 45 [2021-12-06 17:21:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:21:05,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:21:06,368 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:21:06,369 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:06,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540592704] [2021-12-06 17:21:06,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540592704] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 17:21:06,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:21:06,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-06 17:21:06,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327012769] [2021-12-06 17:21:06,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:06,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:21:06,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:06,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:21:06,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:21:06,370 INFO L87 Difference]: Start difference. First operand 231 states and 251 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:06,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:06,554 INFO L93 Difference]: Finished difference Result 272 states and 297 transitions. [2021-12-06 17:21:06,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:21:06,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-12-06 17:21:06,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:06,555 INFO L225 Difference]: With dead ends: 272 [2021-12-06 17:21:06,555 INFO L226 Difference]: Without dead ends: 272 [2021-12-06 17:21:06,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:21:06,556 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 63 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:06,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 256 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 74 Unchecked, 0.2s Time] [2021-12-06 17:21:06,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-12-06 17:21:06,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 243. [2021-12-06 17:21:06,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 187 states have (on average 1.4064171122994653) internal successors, (263), 237 states have internal predecessors, (263), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:21:06,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 268 transitions. [2021-12-06 17:21:06,560 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 268 transitions. Word has length 44 [2021-12-06 17:21:06,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:06,560 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 268 transitions. [2021-12-06 17:21:06,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:06,560 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 268 transitions. [2021-12-06 17:21:06,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 17:21:06,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:06,561 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:06,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-12-06 17:21:06,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:21:06,762 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:06,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:06,764 INFO L85 PathProgramCache]: Analyzing trace with hash -663465001, now seen corresponding path program 1 times [2021-12-06 17:21:06,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:06,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718634725] [2021-12-06 17:21:06,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:06,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:06,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:06,765 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:06,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-06 17:21:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:07,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 17:21:07,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:07,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:21:07,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:21:07,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:21:07,168 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 15 treesize of output 9 [2021-12-06 17:21:07,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:07,466 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-06 17:21:07,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-12-06 17:21:07,477 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:21:07,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-12-06 17:21:07,532 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:21:07,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:21:07,822 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:07,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718634725] [2021-12-06 17:21:07,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718634725] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:21:07,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1173920308] [2021-12-06 17:21:07,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:07,823 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:21:07,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:21:07,824 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:21:07,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-12-06 17:21:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:08,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:21:08,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:08,215 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 6 treesize of output 5 [2021-12-06 17:21:08,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:21:08,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:08,629 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-06 17:21:08,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-12-06 17:21:08,641 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:21:08,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-12-06 17:21:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:21:08,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:21:08,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1173920308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:08,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:21:08,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2021-12-06 17:21:08,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448725235] [2021-12-06 17:21:08,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:08,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:21:08,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:08,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:21:08,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:21:08,672 INFO L87 Difference]: Start difference. First operand 243 states and 268 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:09,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:09,144 INFO L93 Difference]: Finished difference Result 313 states and 344 transitions. [2021-12-06 17:21:09,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:21:09,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-12-06 17:21:09,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:09,146 INFO L225 Difference]: With dead ends: 313 [2021-12-06 17:21:09,146 INFO L226 Difference]: Without dead ends: 313 [2021-12-06 17:21:09,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:21:09,147 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 72 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:09,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 452 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 170 Unchecked, 0.5s Time] [2021-12-06 17:21:09,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-06 17:21:09,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 246. [2021-12-06 17:21:09,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 189 states have (on average 1.3968253968253967) internal successors, (264), 239 states have internal predecessors, (264), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:21:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 270 transitions. [2021-12-06 17:21:09,154 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 270 transitions. Word has length 44 [2021-12-06 17:21:09,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:09,154 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 270 transitions. [2021-12-06 17:21:09,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:09,154 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 270 transitions. [2021-12-06 17:21:09,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 17:21:09,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:09,155 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:09,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-12-06 17:21:09,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2021-12-06 17:21:09,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 17:21:09,557 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:09,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:09,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1359492877, now seen corresponding path program 1 times [2021-12-06 17:21:09,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:09,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281276142] [2021-12-06 17:21:09,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:09,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:09,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:09,562 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:09,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-06 17:21:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:09,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:21:09,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:09,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:21:09,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:21:09,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:21:09,852 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-12-06 17:21:09,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-12-06 17:21:09,928 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-12-06 17:21:09,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-12-06 17:21:09,965 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:21:09,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:21:09,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:09,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281276142] [2021-12-06 17:21:09,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281276142] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:09,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:21:09,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:21:09,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400817117] [2021-12-06 17:21:09,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:09,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:21:09,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:09,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:21:09,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:21:09,966 INFO L87 Difference]: Start difference. First operand 246 states and 270 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:10,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:10,363 INFO L93 Difference]: Finished difference Result 288 states and 320 transitions. [2021-12-06 17:21:10,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:21:10,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-12-06 17:21:10,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:10,366 INFO L225 Difference]: With dead ends: 288 [2021-12-06 17:21:10,366 INFO L226 Difference]: Without dead ends: 288 [2021-12-06 17:21:10,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:21:10,367 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 26 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:10,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 706 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:21:10,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-12-06 17:21:10,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 256. [2021-12-06 17:21:10,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 199 states have (on average 1.3819095477386936) internal successors, (275), 249 states have internal predecessors, (275), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:21:10,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 281 transitions. [2021-12-06 17:21:10,372 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 281 transitions. Word has length 46 [2021-12-06 17:21:10,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:10,372 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 281 transitions. [2021-12-06 17:21:10,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:10,372 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 281 transitions. [2021-12-06 17:21:10,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 17:21:10,372 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:10,372 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:10,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-12-06 17:21:10,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:21:10,573 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:10,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:10,575 INFO L85 PathProgramCache]: Analyzing trace with hash 918765395, now seen corresponding path program 1 times [2021-12-06 17:21:10,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:10,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016035701] [2021-12-06 17:21:10,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:10,576 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:10,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:10,578 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:10,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-06 17:21:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:10,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:21:10,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:21:10,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:21:10,797 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:10,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016035701] [2021-12-06 17:21:10,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016035701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:10,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:21:10,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:21:10,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622008518] [2021-12-06 17:21:10,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:10,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:21:10,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:10,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:21:10,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:21:10,798 INFO L87 Difference]: Start difference. First operand 256 states and 281 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:10,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:10,814 INFO L93 Difference]: Finished difference Result 264 states and 287 transitions. [2021-12-06 17:21:10,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:21:10,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-12-06 17:21:10,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:10,815 INFO L225 Difference]: With dead ends: 264 [2021-12-06 17:21:10,815 INFO L226 Difference]: Without dead ends: 264 [2021-12-06 17:21:10,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:21:10,816 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 3 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:10,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 455 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:21:10,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-12-06 17:21:10,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2021-12-06 17:21:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 205 states have (on average 1.3609756097560977) internal successors, (279), 255 states have internal predecessors, (279), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:21:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 285 transitions. [2021-12-06 17:21:10,820 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 285 transitions. Word has length 46 [2021-12-06 17:21:10,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:10,821 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 285 transitions. [2021-12-06 17:21:10,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:10,821 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 285 transitions. [2021-12-06 17:21:10,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 17:21:10,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:10,821 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:10,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-12-06 17:21:11,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:21:11,023 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:11,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:11,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1934703003, now seen corresponding path program 1 times [2021-12-06 17:21:11,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:11,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625626198] [2021-12-06 17:21:11,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:11,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:11,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:11,028 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:11,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-06 17:21:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:11,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:21:11,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:11,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:21:11,463 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 15 treesize of output 9 [2021-12-06 17:21:12,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:21:12,295 INFO L354 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2021-12-06 17:21:12,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 38 [2021-12-06 17:21:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:21:12,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:21:16,486 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:16,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625626198] [2021-12-06 17:21:16,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625626198] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:21:16,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1098785902] [2021-12-06 17:21:16,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:16,487 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:21:16,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:21:16,487 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:21:16,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-12-06 17:21:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:16,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:21:16,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:16,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-12-06 17:21:18,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:18,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:18,037 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-06 17:21:18,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 32 [2021-12-06 17:21:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:21:18,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:21:18,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1098785902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:18,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:21:18,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2021-12-06 17:21:18,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241832653] [2021-12-06 17:21:18,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:18,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:21:18,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:18,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:21:18,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=170, Unknown=2, NotChecked=0, Total=210 [2021-12-06 17:21:18,113 INFO L87 Difference]: Start difference. First operand 262 states and 285 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:18,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:18,412 INFO L93 Difference]: Finished difference Result 301 states and 328 transitions. [2021-12-06 17:21:18,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:21:18,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-12-06 17:21:18,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:18,414 INFO L225 Difference]: With dead ends: 301 [2021-12-06 17:21:18,414 INFO L226 Difference]: Without dead ends: 301 [2021-12-06 17:21:18,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=50, Invalid=220, Unknown=2, NotChecked=0, Total=272 [2021-12-06 17:21:18,415 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 11 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:18,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 628 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 152 Unchecked, 0.3s Time] [2021-12-06 17:21:18,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-12-06 17:21:18,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 300. [2021-12-06 17:21:18,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 241 states have (on average 1.3195020746887967) internal successors, (318), 291 states have internal predecessors, (318), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 17:21:18,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 327 transitions. [2021-12-06 17:21:18,420 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 327 transitions. Word has length 46 [2021-12-06 17:21:18,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:18,420 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 327 transitions. [2021-12-06 17:21:18,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:18,420 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 327 transitions. [2021-12-06 17:21:18,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 17:21:18,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:18,421 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:18,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-12-06 17:21:18,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-12-06 17:21:18,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:21:18,823 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:18,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:18,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1934703002, now seen corresponding path program 1 times [2021-12-06 17:21:18,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:18,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138759311] [2021-12-06 17:21:18,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:18,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:18,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:18,828 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:18,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-06 17:21:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:19,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 17:21:19,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:19,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:21:19,178 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 15 treesize of output 9 [2021-12-06 17:21:19,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:19,551 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-06 17:21:19,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2021-12-06 17:21:19,565 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:21:19,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-12-06 17:21:19,639 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:21:19,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:21:21,899 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:21,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138759311] [2021-12-06 17:21:21,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138759311] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:21:21,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1129707035] [2021-12-06 17:21:21,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:21,899 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:21:21,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:21:21,900 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:21:21,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-12-06 17:21:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:22,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 17:21:22,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:22,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:21:22,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:22,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 17:21:22,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:21:24,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:24,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:24,113 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 17:21:24,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 28 [2021-12-06 17:21:24,266 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:21:24,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:21:24,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1129707035] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:24,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:21:24,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2021-12-06 17:21:24,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627817152] [2021-12-06 17:21:24,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:24,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:21:24,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:24,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:21:24,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=258, Unknown=1, NotChecked=0, Total=306 [2021-12-06 17:21:24,268 INFO L87 Difference]: Start difference. First operand 300 states and 327 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:24,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:24,891 INFO L93 Difference]: Finished difference Result 301 states and 327 transitions. [2021-12-06 17:21:24,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:21:24,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-12-06 17:21:24,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:24,893 INFO L225 Difference]: With dead ends: 301 [2021-12-06 17:21:24,893 INFO L226 Difference]: Without dead ends: 301 [2021-12-06 17:21:24,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=60, Invalid=319, Unknown=1, NotChecked=0, Total=380 [2021-12-06 17:21:24,893 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 14 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:24,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 535 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 214 Invalid, 0 Unknown, 145 Unchecked, 0.5s Time] [2021-12-06 17:21:24,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-12-06 17:21:24,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 300. [2021-12-06 17:21:24,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 241 states have (on average 1.3153526970954357) internal successors, (317), 291 states have internal predecessors, (317), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 17:21:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 326 transitions. [2021-12-06 17:21:24,898 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 326 transitions. Word has length 46 [2021-12-06 17:21:24,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:24,898 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 326 transitions. [2021-12-06 17:21:24,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:24,899 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 326 transitions. [2021-12-06 17:21:24,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 17:21:24,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:24,901 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:24,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-12-06 17:21:25,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2021-12-06 17:21:25,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 17:21:25,302 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:25,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:25,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2050875696, now seen corresponding path program 1 times [2021-12-06 17:21:25,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:25,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831231188] [2021-12-06 17:21:25,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:25,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:25,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:25,308 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:25,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-06 17:21:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:25,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 17:21:25,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:25,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:21:25,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:21:25,749 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 15 treesize of output 9 [2021-12-06 17:21:26,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:21:26,725 INFO L354 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2021-12-06 17:21:26,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 41 [2021-12-06 17:21:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:21:26,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:21:30,851 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:30,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831231188] [2021-12-06 17:21:30,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831231188] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:21:30,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1623183668] [2021-12-06 17:21:30,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:30,852 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:21:30,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:21:30,852 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:21:30,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-12-06 17:21:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:31,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:21:31,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:31,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:21:33,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:21:33,702 INFO L354 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-12-06 17:21:33,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 35 [2021-12-06 17:21:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:21:33,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:21:33,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1623183668] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:33,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:21:33,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2021-12-06 17:21:33,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701628784] [2021-12-06 17:21:33,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:33,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:21:33,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:33,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:21:33,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=96, Unknown=3, NotChecked=0, Total=132 [2021-12-06 17:21:33,718 INFO L87 Difference]: Start difference. First operand 300 states and 326 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:33,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:33,986 INFO L93 Difference]: Finished difference Result 350 states and 382 transitions. [2021-12-06 17:21:33,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:21:33,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-12-06 17:21:33,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:33,988 INFO L225 Difference]: With dead ends: 350 [2021-12-06 17:21:33,988 INFO L226 Difference]: Without dead ends: 350 [2021-12-06 17:21:33,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=33, Invalid=96, Unknown=3, NotChecked=0, Total=132 [2021-12-06 17:21:33,988 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 75 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:33,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 412 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 142 Invalid, 0 Unknown, 149 Unchecked, 0.3s Time] [2021-12-06 17:21:33,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-06 17:21:33,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 310. [2021-12-06 17:21:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 250 states have (on average 1.316) internal successors, (329), 300 states have internal predecessors, (329), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:21:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 340 transitions. [2021-12-06 17:21:33,994 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 340 transitions. Word has length 48 [2021-12-06 17:21:33,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:33,994 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 340 transitions. [2021-12-06 17:21:33,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:33,994 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 340 transitions. [2021-12-06 17:21:33,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 17:21:33,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:33,995 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:33,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2021-12-06 17:21:34,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-12-06 17:21:34,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:21:34,396 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:34,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:34,397 INFO L85 PathProgramCache]: Analyzing trace with hash 2050875697, now seen corresponding path program 1 times [2021-12-06 17:21:34,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:34,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880013370] [2021-12-06 17:21:34,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:34,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:34,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:34,401 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:34,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-12-06 17:21:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:34,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 17:21:34,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:34,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:21:34,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:21:34,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:21:34,815 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 15 treesize of output 9 [2021-12-06 17:21:35,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:35,152 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-06 17:21:35,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-12-06 17:21:35,166 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:21:35,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-12-06 17:21:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:21:35,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:21:37,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:37,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880013370] [2021-12-06 17:21:37,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880013370] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:21:37,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [428622092] [2021-12-06 17:21:37,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:37,457 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:21:37,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:21:37,457 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:21:37,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-12-06 17:21:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:37,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:21:37,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:37,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:21:37,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:21:38,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:38,420 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-06 17:21:38,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-12-06 17:21:38,432 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:21:38,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-12-06 17:21:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:21:38,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:21:38,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [428622092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:38,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:21:38,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2021-12-06 17:21:38,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896431336] [2021-12-06 17:21:38,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:38,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:21:38,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:38,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:21:38,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=67, Unknown=1, NotChecked=0, Total=90 [2021-12-06 17:21:38,466 INFO L87 Difference]: Start difference. First operand 310 states and 340 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:38,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:38,971 INFO L93 Difference]: Finished difference Result 374 states and 408 transitions. [2021-12-06 17:21:38,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:21:38,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-12-06 17:21:38,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:38,973 INFO L225 Difference]: With dead ends: 374 [2021-12-06 17:21:38,973 INFO L226 Difference]: Without dead ends: 374 [2021-12-06 17:21:38,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=22, Invalid=67, Unknown=1, NotChecked=0, Total=90 [2021-12-06 17:21:38,974 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 72 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 218 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:38,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 452 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 248 Invalid, 0 Unknown, 218 Unchecked, 0.5s Time] [2021-12-06 17:21:38,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-12-06 17:21:38,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 309. [2021-12-06 17:21:38,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 249 states have (on average 1.3132530120481927) internal successors, (327), 300 states have internal predecessors, (327), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:21:38,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 338 transitions. [2021-12-06 17:21:38,979 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 338 transitions. Word has length 48 [2021-12-06 17:21:38,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:38,980 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 338 transitions. [2021-12-06 17:21:38,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:38,980 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 338 transitions. [2021-12-06 17:21:38,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 17:21:38,980 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:38,980 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:38,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2021-12-06 17:21:39,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-12-06 17:21:39,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:21:39,381 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:39,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:39,381 INFO L85 PathProgramCache]: Analyzing trace with hash 471257990, now seen corresponding path program 1 times [2021-12-06 17:21:39,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:39,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530898923] [2021-12-06 17:21:39,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:39,382 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:39,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:39,383 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:39,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-12-06 17:21:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:39,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 17:21:39,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:21:39,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:21:39,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:39,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530898923] [2021-12-06 17:21:39,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530898923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:39,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:21:39,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:21:39,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378940706] [2021-12-06 17:21:39,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:39,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:21:39,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:39,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:21:39,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:21:39,594 INFO L87 Difference]: Start difference. First operand 309 states and 338 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:39,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:39,859 INFO L93 Difference]: Finished difference Result 308 states and 337 transitions. [2021-12-06 17:21:39,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:21:39,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-12-06 17:21:39,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:39,860 INFO L225 Difference]: With dead ends: 308 [2021-12-06 17:21:39,860 INFO L226 Difference]: Without dead ends: 308 [2021-12-06 17:21:39,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:21:39,861 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 140 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:39,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 217 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:21:39,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-12-06 17:21:39,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-12-06 17:21:39,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 249 states have (on average 1.3092369477911647) internal successors, (326), 299 states have internal predecessors, (326), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:21:39,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 337 transitions. [2021-12-06 17:21:39,866 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 337 transitions. Word has length 48 [2021-12-06 17:21:39,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:39,866 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 337 transitions. [2021-12-06 17:21:39,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:39,866 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 337 transitions. [2021-12-06 17:21:39,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 17:21:39,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:39,867 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:39,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-12-06 17:21:40,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:21:40,068 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:40,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:40,069 INFO L85 PathProgramCache]: Analyzing trace with hash 471257991, now seen corresponding path program 1 times [2021-12-06 17:21:40,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:40,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775663510] [2021-12-06 17:21:40,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:40,071 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:40,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:40,073 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:40,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-12-06 17:21:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:40,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:21:40,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:21:40,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:21:40,406 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:40,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775663510] [2021-12-06 17:21:40,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775663510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:40,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:21:40,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:21:40,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792947225] [2021-12-06 17:21:40,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:40,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:21:40,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:40,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:21:40,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:21:40,407 INFO L87 Difference]: Start difference. First operand 308 states and 337 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:40,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:40,751 INFO L93 Difference]: Finished difference Result 299 states and 328 transitions. [2021-12-06 17:21:40,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:21:40,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-12-06 17:21:40,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:40,753 INFO L225 Difference]: With dead ends: 299 [2021-12-06 17:21:40,753 INFO L226 Difference]: Without dead ends: 299 [2021-12-06 17:21:40,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:21:40,753 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 151 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:40,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 214 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:21:40,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-06 17:21:40,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2021-12-06 17:21:40,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 249 states have (on average 1.2730923694779117) internal successors, (317), 290 states have internal predecessors, (317), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:21:40,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 328 transitions. [2021-12-06 17:21:40,758 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 328 transitions. Word has length 48 [2021-12-06 17:21:40,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:40,758 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 328 transitions. [2021-12-06 17:21:40,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:40,758 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 328 transitions. [2021-12-06 17:21:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 17:21:40,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:40,759 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:40,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-12-06 17:21:40,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:21:40,960 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:40,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:40,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1724095953, now seen corresponding path program 1 times [2021-12-06 17:21:40,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:40,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941235476] [2021-12-06 17:21:40,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:40,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:40,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:40,965 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:40,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-12-06 17:21:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:41,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:21:41,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:41,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:21:41,256 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 21 treesize of output 13 [2021-12-06 17:21:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:21:41,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:21:41,263 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:41,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941235476] [2021-12-06 17:21:41,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941235476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:41,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:21:41,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:21:41,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343606246] [2021-12-06 17:21:41,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:41,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:21:41,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:41,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:21:41,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:21:41,264 INFO L87 Difference]: Start difference. First operand 299 states and 328 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:41,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:41,695 INFO L93 Difference]: Finished difference Result 320 states and 350 transitions. [2021-12-06 17:21:41,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:21:41,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-12-06 17:21:41,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:41,697 INFO L225 Difference]: With dead ends: 320 [2021-12-06 17:21:41,697 INFO L226 Difference]: Without dead ends: 320 [2021-12-06 17:21:41,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:21:41,698 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 199 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:41,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 325 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 17:21:41,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-12-06 17:21:41,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 298. [2021-12-06 17:21:41,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 249 states have (on average 1.2690763052208835) internal successors, (316), 289 states have internal predecessors, (316), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:21:41,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 327 transitions. [2021-12-06 17:21:41,702 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 327 transitions. Word has length 49 [2021-12-06 17:21:41,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:41,702 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 327 transitions. [2021-12-06 17:21:41,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:41,702 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 327 transitions. [2021-12-06 17:21:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 17:21:41,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:41,703 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:41,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-12-06 17:21:41,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:21:41,903 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:41,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:41,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1724095954, now seen corresponding path program 1 times [2021-12-06 17:21:41,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:41,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687026065] [2021-12-06 17:21:41,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:41,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:41,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:41,905 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:41,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-12-06 17:21:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:42,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 17:21:42,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:42,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:21:42,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:21:42,210 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 17 treesize of output 9 [2021-12-06 17:21:42,212 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 15 treesize of output 7 [2021-12-06 17:21:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:21:42,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:21:42,226 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:42,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687026065] [2021-12-06 17:21:42,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687026065] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:42,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:21:42,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:21:42,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540850734] [2021-12-06 17:21:42,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:42,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:21:42,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:42,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:21:42,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:21:42,227 INFO L87 Difference]: Start difference. First operand 298 states and 327 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:42,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:42,886 INFO L93 Difference]: Finished difference Result 336 states and 366 transitions. [2021-12-06 17:21:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:21:42,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-12-06 17:21:42,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:42,888 INFO L225 Difference]: With dead ends: 336 [2021-12-06 17:21:42,888 INFO L226 Difference]: Without dead ends: 336 [2021-12-06 17:21:42,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:21:42,888 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 181 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:42,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 343 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 17:21:42,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-12-06 17:21:42,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 297. [2021-12-06 17:21:42,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 249 states have (on average 1.2650602409638554) internal successors, (315), 288 states have internal predecessors, (315), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:21:42,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 326 transitions. [2021-12-06 17:21:42,893 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 326 transitions. Word has length 49 [2021-12-06 17:21:42,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:42,893 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 326 transitions. [2021-12-06 17:21:42,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:42,893 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 326 transitions. [2021-12-06 17:21:42,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-06 17:21:42,894 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:42,894 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:42,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-12-06 17:21:43,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:21:43,095 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:43,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:43,095 INFO L85 PathProgramCache]: Analyzing trace with hash -498440897, now seen corresponding path program 1 times [2021-12-06 17:21:43,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:43,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505829358] [2021-12-06 17:21:43,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:43,096 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:43,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:43,097 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:43,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-12-06 17:21:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:43,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:21:43,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:43,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:21:43,557 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 15 treesize of output 9 [2021-12-06 17:21:44,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:21:44,466 INFO L354 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2021-12-06 17:21:44,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 39 [2021-12-06 17:21:44,543 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:21:44,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:21:48,627 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:48,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505829358] [2021-12-06 17:21:48,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505829358] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:21:48,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1829997151] [2021-12-06 17:21:48,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:48,627 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:21:48,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:21:48,628 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:21:48,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2021-12-06 17:21:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:49,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:21:49,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:49,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-06 17:21:50,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:50,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:50,335 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-06 17:21:50,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 31 [2021-12-06 17:21:50,419 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:21:50,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:21:50,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1829997151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:50,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:21:50,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2021-12-06 17:21:50,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879779367] [2021-12-06 17:21:50,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:50,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:21:50,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:50,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:21:50,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=170, Unknown=2, NotChecked=0, Total=210 [2021-12-06 17:21:50,420 INFO L87 Difference]: Start difference. First operand 297 states and 326 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:50,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:50,757 INFO L93 Difference]: Finished difference Result 314 states and 345 transitions. [2021-12-06 17:21:50,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:21:50,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2021-12-06 17:21:50,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:50,759 INFO L225 Difference]: With dead ends: 314 [2021-12-06 17:21:50,759 INFO L226 Difference]: Without dead ends: 314 [2021-12-06 17:21:50,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=50, Invalid=220, Unknown=2, NotChecked=0, Total=272 [2021-12-06 17:21:50,760 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 13 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:50,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 637 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 143 Unchecked, 0.3s Time] [2021-12-06 17:21:50,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-12-06 17:21:50,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 307. [2021-12-06 17:21:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 259 states have (on average 1.2625482625482625) internal successors, (327), 297 states have internal predecessors, (327), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 17:21:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 337 transitions. [2021-12-06 17:21:50,765 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 337 transitions. Word has length 50 [2021-12-06 17:21:50,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:50,765 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 337 transitions. [2021-12-06 17:21:50,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:50,765 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 337 transitions. [2021-12-06 17:21:50,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-06 17:21:50,765 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:50,765 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:50,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-12-06 17:21:50,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (40)] Ended with exit code 0 [2021-12-06 17:21:51,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 17:21:51,167 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:51,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:51,168 INFO L85 PathProgramCache]: Analyzing trace with hash -498440896, now seen corresponding path program 1 times [2021-12-06 17:21:51,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:51,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579457159] [2021-12-06 17:21:51,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:51,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:51,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:51,172 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:51,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-12-06 17:21:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:51,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 17:21:51,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:51,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:21:51,658 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 15 treesize of output 9 [2021-12-06 17:21:51,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:51,987 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-06 17:21:51,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2021-12-06 17:21:51,999 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:21:52,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-12-06 17:21:52,090 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:21:52,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:21:54,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:54,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579457159] [2021-12-06 17:21:54,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579457159] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:21:54,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1285440721] [2021-12-06 17:21:54,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:54,305 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:21:54,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:21:54,305 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:21:54,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2021-12-06 17:21:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:54,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 17:21:54,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:54,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:21:54,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:54,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 17:21:54,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:21:56,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:56,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:21:56,343 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 17:21:56,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 28 [2021-12-06 17:21:56,502 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:21:56,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:21:56,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1285440721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:56,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:21:56,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2021-12-06 17:21:56,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044761548] [2021-12-06 17:21:56,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:56,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:21:56,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:56,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:21:56,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=258, Unknown=1, NotChecked=0, Total=306 [2021-12-06 17:21:56,503 INFO L87 Difference]: Start difference. First operand 307 states and 337 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:56,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:56,941 INFO L93 Difference]: Finished difference Result 308 states and 337 transitions. [2021-12-06 17:21:56,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:21:56,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2021-12-06 17:21:56,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:56,943 INFO L225 Difference]: With dead ends: 308 [2021-12-06 17:21:56,943 INFO L226 Difference]: Without dead ends: 308 [2021-12-06 17:21:56,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=60, Invalid=319, Unknown=1, NotChecked=0, Total=380 [2021-12-06 17:21:56,944 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 13 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:56,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 456 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 122 Unchecked, 0.3s Time] [2021-12-06 17:21:56,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-12-06 17:21:56,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 298. [2021-12-06 17:21:56,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 251 states have (on average 1.2629482071713147) internal successors, (317), 289 states have internal predecessors, (317), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 17:21:56,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 326 transitions. [2021-12-06 17:21:56,948 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 326 transitions. Word has length 50 [2021-12-06 17:21:56,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:56,948 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 326 transitions. [2021-12-06 17:21:56,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:56,949 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 326 transitions. [2021-12-06 17:21:56,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 17:21:56,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:56,949 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:56,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-12-06 17:21:57,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (42)] Forceful destruction successful, exit code 0 [2021-12-06 17:21:57,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 17:21:57,350 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:57,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:57,351 INFO L85 PathProgramCache]: Analyzing trace with hash -42553449, now seen corresponding path program 1 times [2021-12-06 17:21:57,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:57,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001165006] [2021-12-06 17:21:57,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:57,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:57,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:57,355 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:57,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-12-06 17:21:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:57,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:21:57,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:57,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:21:57,634 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 21 treesize of output 13 [2021-12-06 17:21:57,641 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:21:57,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:21:57,641 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:57,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001165006] [2021-12-06 17:21:57,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001165006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:57,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:21:57,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:21:57,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288031919] [2021-12-06 17:21:57,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:57,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:21:57,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:57,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:21:57,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:21:57,642 INFO L87 Difference]: Start difference. First operand 298 states and 326 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:58,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:58,097 INFO L93 Difference]: Finished difference Result 320 states and 349 transitions. [2021-12-06 17:21:58,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:21:58,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-06 17:21:58,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:58,099 INFO L225 Difference]: With dead ends: 320 [2021-12-06 17:21:58,099 INFO L226 Difference]: Without dead ends: 320 [2021-12-06 17:21:58,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:21:58,100 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 182 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:58,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 328 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 17:21:58,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-12-06 17:21:58,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 297. [2021-12-06 17:21:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 251 states have (on average 1.2589641434262948) internal successors, (316), 288 states have internal predecessors, (316), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 17:21:58,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 325 transitions. [2021-12-06 17:21:58,104 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 325 transitions. Word has length 53 [2021-12-06 17:21:58,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:58,107 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 325 transitions. [2021-12-06 17:21:58,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:58,107 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 325 transitions. [2021-12-06 17:21:58,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 17:21:58,107 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:58,107 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:58,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2021-12-06 17:21:58,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:21:58,309 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:58,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:58,310 INFO L85 PathProgramCache]: Analyzing trace with hash -42553448, now seen corresponding path program 1 times [2021-12-06 17:21:58,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:58,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859087400] [2021-12-06 17:21:58,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:58,312 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:58,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:58,315 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:58,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-12-06 17:21:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:21:58,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 17:21:58,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:21:58,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:21:58,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:21:58,678 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 15 treesize of output 7 [2021-12-06 17:21:58,681 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 17 treesize of output 9 [2021-12-06 17:21:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:21:58,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:21:58,694 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:21:58,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859087400] [2021-12-06 17:21:58,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859087400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:21:58,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:21:58,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:21:58,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441135466] [2021-12-06 17:21:58,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:21:58,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:21:58,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:21:58,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:21:58,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:21:58,695 INFO L87 Difference]: Start difference. First operand 297 states and 325 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:59,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:21:59,364 INFO L93 Difference]: Finished difference Result 336 states and 365 transitions. [2021-12-06 17:21:59,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:21:59,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-06 17:21:59,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:21:59,366 INFO L225 Difference]: With dead ends: 336 [2021-12-06 17:21:59,366 INFO L226 Difference]: Without dead ends: 336 [2021-12-06 17:21:59,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:21:59,367 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 166 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:21:59,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 346 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 17:21:59,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-12-06 17:21:59,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 296. [2021-12-06 17:21:59,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 251 states have (on average 1.254980079681275) internal successors, (315), 287 states have internal predecessors, (315), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 17:21:59,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 324 transitions. [2021-12-06 17:21:59,371 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 324 transitions. Word has length 53 [2021-12-06 17:21:59,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:21:59,374 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 324 transitions. [2021-12-06 17:21:59,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:21:59,374 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 324 transitions. [2021-12-06 17:21:59,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 17:21:59,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:21:59,375 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:21:59,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-12-06 17:21:59,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:21:59,576 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting create_dataErr26REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:21:59,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:21:59,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1556982670, now seen corresponding path program 1 times [2021-12-06 17:21:59,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:21:59,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499960918] [2021-12-06 17:21:59,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:21:59,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:21:59,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:21:59,582 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:21:59,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-12-06 17:22:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:22:00,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:22:00,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:22:00,078 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 6 treesize of output 5 [2021-12-06 17:22:00,109 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 17:22:00,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-12-06 17:22:00,121 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:22:00,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:22:00,171 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:22:00,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:22:00,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499960918] [2021-12-06 17:22:00,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499960918] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:22:00,171 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:22:00,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-12-06 17:22:00,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762837544] [2021-12-06 17:22:00,172 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:22:00,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:22:00,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:22:00,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:22:00,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:22:00,172 INFO L87 Difference]: Start difference. First operand 296 states and 324 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:22:00,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:22:00,477 INFO L93 Difference]: Finished difference Result 301 states and 329 transitions. [2021-12-06 17:22:00,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:22:00,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-06 17:22:00,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:22:00,479 INFO L225 Difference]: With dead ends: 301 [2021-12-06 17:22:00,479 INFO L226 Difference]: Without dead ends: 301 [2021-12-06 17:22:00,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:22:00,480 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 49 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:22:00,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 240 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:22:00,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-12-06 17:22:00,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 295. [2021-12-06 17:22:00,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 251 states have (on average 1.247011952191235) internal successors, (313), 286 states have internal predecessors, (313), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 17:22:00,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 322 transitions. [2021-12-06 17:22:00,484 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 322 transitions. Word has length 53 [2021-12-06 17:22:00,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:22:00,484 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 322 transitions. [2021-12-06 17:22:00,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:22:00,484 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 322 transitions. [2021-12-06 17:22:00,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 17:22:00,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:22:00,484 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:22:00,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-12-06 17:22:00,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:22:00,686 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting create_dataErr27REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:22:00,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:22:00,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1556982671, now seen corresponding path program 1 times [2021-12-06 17:22:00,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:22:00,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425650158] [2021-12-06 17:22:00,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:22:00,689 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:22:00,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:22:00,691 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:22:00,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-12-06 17:22:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:22:01,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:22:01,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:22:01,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:22:01,227 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 17:22:01,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 17:22:01,241 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:22:01,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:22:01,564 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:22:01,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:22:01,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425650158] [2021-12-06 17:22:01,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425650158] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:22:01,565 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:22:01,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2021-12-06 17:22:01,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681865064] [2021-12-06 17:22:01,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:22:01,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:22:01,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:22:01,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:22:01,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:22:01,566 INFO L87 Difference]: Start difference. First operand 295 states and 322 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:22:01,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:22:01,992 INFO L93 Difference]: Finished difference Result 303 states and 327 transitions. [2021-12-06 17:22:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:22:01,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-06 17:22:01,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:22:01,994 INFO L225 Difference]: With dead ends: 303 [2021-12-06 17:22:01,994 INFO L226 Difference]: Without dead ends: 303 [2021-12-06 17:22:01,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:22:01,995 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 60 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:22:01,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 283 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 74 Invalid, 0 Unknown, 75 Unchecked, 0.4s Time] [2021-12-06 17:22:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-12-06 17:22:01,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 275. [2021-12-06 17:22:01,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 235 states have (on average 1.221276595744681) internal successors, (287), 266 states have internal predecessors, (287), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 17:22:02,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 296 transitions. [2021-12-06 17:22:02,000 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 296 transitions. Word has length 53 [2021-12-06 17:22:02,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:22:02,001 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 296 transitions. [2021-12-06 17:22:02,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:22:02,001 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 296 transitions. [2021-12-06 17:22:02,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 17:22:02,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:22:02,002 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:22:02,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-12-06 17:22:02,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:22:02,203 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:22:02,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:22:02,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1319156755, now seen corresponding path program 1 times [2021-12-06 17:22:02,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:22:02,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648720802] [2021-12-06 17:22:02,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:22:02,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:22:02,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:22:02,208 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:22:02,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-12-06 17:22:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:22:02,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 17:22:02,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:22:02,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:22:02,959 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-06 17:22:02,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 29 [2021-12-06 17:22:02,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:22:03,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 17:22:03,217 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:22:03,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 31 [2021-12-06 17:22:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 17:22:03,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:22:03,252 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:22:03,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648720802] [2021-12-06 17:22:03,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648720802] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:22:03,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:22:03,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:22:03,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018214768] [2021-12-06 17:22:03,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:22:03,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 17:22:03,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:22:03,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 17:22:03,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:22:03,253 INFO L87 Difference]: Start difference. First operand 275 states and 296 transitions. Second operand has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:22:03,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:22:03,971 INFO L93 Difference]: Finished difference Result 334 states and 367 transitions. [2021-12-06 17:22:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 17:22:03,971 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-12-06 17:22:03,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:22:03,972 INFO L225 Difference]: With dead ends: 334 [2021-12-06 17:22:03,972 INFO L226 Difference]: Without dead ends: 334 [2021-12-06 17:22:03,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:22:03,973 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 86 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:22:03,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 552 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 369 Invalid, 0 Unknown, 112 Unchecked, 0.6s Time] [2021-12-06 17:22:03,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-12-06 17:22:03,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 300. [2021-12-06 17:22:03,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 258 states have (on average 1.2364341085271318) internal successors, (319), 289 states have internal predecessors, (319), 4 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (11), 7 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 17:22:03,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 334 transitions. [2021-12-06 17:22:03,978 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 334 transitions. Word has length 54 [2021-12-06 17:22:03,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:22:03,978 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 334 transitions. [2021-12-06 17:22:03,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:22:03,979 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 334 transitions. [2021-12-06 17:22:03,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 17:22:03,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:22:03,979 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:22:03,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2021-12-06 17:22:04,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:22:04,180 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:22:04,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:22:04,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1319156754, now seen corresponding path program 1 times [2021-12-06 17:22:04,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:22:04,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596289231] [2021-12-06 17:22:04,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:22:04,183 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:22:04,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:22:04,184 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:22:04,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-12-06 17:22:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:22:04,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 17:22:04,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:22:04,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:22:04,540 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:22:04,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-12-06 17:22:04,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:22:04,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:22:04,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 17:22:04,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 17:22:05,023 INFO L354 Elim1Store]: treesize reduction 29, result has 9.4 percent of original size [2021-12-06 17:22:05,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 37 [2021-12-06 17:22:05,035 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 17:22:05,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-12-06 17:22:05,064 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:22:05,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:22:05,064 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:22:05,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596289231] [2021-12-06 17:22:05,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596289231] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:22:05,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:22:05,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 17:22:05,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954111175] [2021-12-06 17:22:05,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:22:05,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:22:05,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:22:05,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:22:05,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:22:05,065 INFO L87 Difference]: Start difference. First operand 300 states and 334 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:22:06,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:22:06,930 INFO L93 Difference]: Finished difference Result 500 states and 549 transitions. [2021-12-06 17:22:06,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:22:06,931 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-12-06 17:22:06,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:22:06,932 INFO L225 Difference]: With dead ends: 500 [2021-12-06 17:22:06,932 INFO L226 Difference]: Without dead ends: 500 [2021-12-06 17:22:06,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-12-06 17:22:06,933 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 370 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:22:06,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 705 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 686 Invalid, 0 Unknown, 147 Unchecked, 1.5s Time] [2021-12-06 17:22:06,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-12-06 17:22:06,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 321. [2021-12-06 17:22:06,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 278 states have (on average 1.2446043165467626) internal successors, (346), 308 states have internal predecessors, (346), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (14), 9 states have call predecessors, (14), 5 states have call successors, (14) [2021-12-06 17:22:06,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 365 transitions. [2021-12-06 17:22:06,939 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 365 transitions. Word has length 54 [2021-12-06 17:22:06,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:22:06,939 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 365 transitions. [2021-12-06 17:22:06,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:22:06,939 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 365 transitions. [2021-12-06 17:22:06,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 17:22:06,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:22:06,939 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:22:06,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-12-06 17:22:07,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:22:07,141 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:22:07,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:22:07,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1610777395, now seen corresponding path program 1 times [2021-12-06 17:22:07,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:22:07,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529491243] [2021-12-06 17:22:07,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:22:07,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:22:07,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:22:07,146 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:22:07,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-12-06 17:22:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:22:07,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 17:22:07,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:22:07,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:22:10,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:22:10,189 INFO L354 Elim1Store]: treesize reduction 96, result has 27.8 percent of original size [2021-12-06 17:22:10,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 54 treesize of output 77 [2021-12-06 17:22:10,482 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:22:10,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:22:12,682 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:22:12,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529491243] [2021-12-06 17:22:12,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529491243] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:22:12,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2130588562] [2021-12-06 17:22:12,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:22:12,683 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:22:12,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:22:12,684 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:22:12,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2021-12-06 17:22:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:22:13,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:22:13,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:22:13,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:22:35,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:22:35,143 INFO L354 Elim1Store]: treesize reduction 70, result has 34.6 percent of original size [2021-12-06 17:22:35,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 43 treesize of output 68 [2021-12-06 17:22:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:22:35,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:22:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:22:42,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2130588562] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 17:22:42,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:22:42,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 15 [2021-12-06 17:22:42,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666661468] [2021-12-06 17:22:42,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:22:42,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:22:42,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:22:42,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:22:42,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=194, Unknown=8, NotChecked=0, Total=272 [2021-12-06 17:22:42,461 INFO L87 Difference]: Start difference. First operand 321 states and 365 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:22:42,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:22:42,618 INFO L93 Difference]: Finished difference Result 367 states and 418 transitions. [2021-12-06 17:22:42,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:22:42,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-12-06 17:22:42,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:22:42,620 INFO L225 Difference]: With dead ends: 367 [2021-12-06 17:22:42,620 INFO L226 Difference]: Without dead ends: 367 [2021-12-06 17:22:42,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 116 SyntacticMatches, 33 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=70, Invalid=194, Unknown=8, NotChecked=0, Total=272 [2021-12-06 17:22:42,620 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 64 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:22:42,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 294 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 129 Unchecked, 0.2s Time] [2021-12-06 17:22:42,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-12-06 17:22:42,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 342. [2021-12-06 17:22:42,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 298 states have (on average 1.2416107382550337) internal successors, (370), 328 states have internal predecessors, (370), 5 states have call successors, (5), 3 states have call predecessors, (5), 7 states have return successors, (18), 10 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-06 17:22:42,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 393 transitions. [2021-12-06 17:22:42,626 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 393 transitions. Word has length 55 [2021-12-06 17:22:42,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:22:42,627 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 393 transitions. [2021-12-06 17:22:42,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:22:42,627 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 393 transitions. [2021-12-06 17:22:42,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 17:22:42,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:22:42,627 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:22:42,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (50)] Forceful destruction successful, exit code 0 [2021-12-06 17:22:42,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-12-06 17:22:43,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:22:43,029 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:22:43,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:22:43,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1610777396, now seen corresponding path program 1 times [2021-12-06 17:22:43,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:22:43,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48775916] [2021-12-06 17:22:43,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:22:43,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:22:43,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:22:43,034 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:22:43,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-12-06 17:22:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:22:43,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 17:22:43,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:22:43,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:22:43,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:22:48,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:22:48,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:22:48,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:22:49,048 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-12-06 17:22:49,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2021-12-06 17:22:49,078 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 17:22:49,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 48 [2021-12-06 17:22:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:22:49,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:22:49,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:22:49,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48775916] [2021-12-06 17:22:49,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48775916] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:22:49,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1430066523] [2021-12-06 17:22:49,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:22:49,559 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:22:49,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:22:49,559 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:22:49,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (52)] Waiting until timeout for monitored process [2021-12-06 17:22:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:22:50,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 17:22:50,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:22:50,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:22:50,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:22:52,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:22:52,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:22:52,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:22:52,787 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-12-06 17:22:52,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2021-12-06 17:22:52,822 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 17:22:52,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 45 [2021-12-06 17:22:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:22:52,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:22:53,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1430066523] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:22:53,261 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:22:53,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-12-06 17:22:53,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710868234] [2021-12-06 17:22:53,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:22:53,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:22:53,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:22:53,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:22:53,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=85, Unknown=1, NotChecked=0, Total=110 [2021-12-06 17:22:53,262 INFO L87 Difference]: Start difference. First operand 342 states and 393 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:22:53,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:22:53,603 INFO L93 Difference]: Finished difference Result 487 states and 557 transitions. [2021-12-06 17:22:53,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:22:53,604 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-12-06 17:22:53,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:22:53,605 INFO L225 Difference]: With dead ends: 487 [2021-12-06 17:22:53,605 INFO L226 Difference]: Without dead ends: 487 [2021-12-06 17:22:53,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 100 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=24, Invalid=85, Unknown=1, NotChecked=0, Total=110 [2021-12-06 17:22:53,606 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 119 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 300 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:22:53,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 708 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 300 Unchecked, 0.3s Time] [2021-12-06 17:22:53,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-12-06 17:22:53,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 356. [2021-12-06 17:22:53,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 311 states have (on average 1.234726688102894) internal successors, (384), 342 states have internal predecessors, (384), 5 states have call successors, (5), 3 states have call predecessors, (5), 8 states have return successors, (22), 10 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 17:22:53,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 411 transitions. [2021-12-06 17:22:53,612 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 411 transitions. Word has length 55 [2021-12-06 17:22:53,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:22:53,613 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 411 transitions. [2021-12-06 17:22:53,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:22:53,613 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 411 transitions. [2021-12-06 17:22:53,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 17:22:53,613 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:22:53,613 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:22:53,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (52)] Ended with exit code 0 [2021-12-06 17:22:53,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-12-06 17:22:54,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:22:54,015 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:22:54,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:22:54,016 INFO L85 PathProgramCache]: Analyzing trace with hash 948367782, now seen corresponding path program 1 times [2021-12-06 17:22:54,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:22:54,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397673092] [2021-12-06 17:22:54,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:22:54,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:22:54,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:22:54,019 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:22:54,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-12-06 17:22:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:22:54,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 17:22:54,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:22:54,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:22:54,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:22:54,566 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 15 treesize of output 9 [2021-12-06 17:22:55,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:22:55,720 INFO L354 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2021-12-06 17:22:55,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 41 [2021-12-06 17:22:55,775 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:22:55,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:22:57,869 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:22:57,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397673092] [2021-12-06 17:22:57,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397673092] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:22:57,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1246920599] [2021-12-06 17:22:57,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:22:57,870 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:22:57,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:22:57,870 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:22:57,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (54)] Waiting until timeout for monitored process [2021-12-06 17:22:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:22:58,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:22:58,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:22:58,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:23:00,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:23:00,870 INFO L354 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-12-06 17:23:00,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 32 [2021-12-06 17:23:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 17:23:00,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:23:00,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1246920599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:23:00,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:23:00,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2021-12-06 17:23:00,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112605858] [2021-12-06 17:23:00,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:23:00,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:23:00,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:23:00,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:23:00,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=79, Unknown=2, NotChecked=0, Total=110 [2021-12-06 17:23:00,888 INFO L87 Difference]: Start difference. First operand 356 states and 411 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:23:01,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:23:01,123 INFO L93 Difference]: Finished difference Result 385 states and 440 transitions. [2021-12-06 17:23:01,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:23:01,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-12-06 17:23:01,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:23:01,125 INFO L225 Difference]: With dead ends: 385 [2021-12-06 17:23:01,125 INFO L226 Difference]: Without dead ends: 385 [2021-12-06 17:23:01,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=29, Invalid=79, Unknown=2, NotChecked=0, Total=110 [2021-12-06 17:23:01,126 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 60 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:23:01,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 323 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 0 Unknown, 161 Unchecked, 0.2s Time] [2021-12-06 17:23:01,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-12-06 17:23:01,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 356. [2021-12-06 17:23:01,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 311 states have (on average 1.2282958199356913) internal successors, (382), 342 states have internal predecessors, (382), 5 states have call successors, (5), 3 states have call predecessors, (5), 8 states have return successors, (22), 10 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 17:23:01,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 409 transitions. [2021-12-06 17:23:01,131 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 409 transitions. Word has length 56 [2021-12-06 17:23:01,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:23:01,132 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 409 transitions. [2021-12-06 17:23:01,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:23:01,132 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 409 transitions. [2021-12-06 17:23:01,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 17:23:01,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:23:01,132 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:23:01,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (54)] Ended with exit code 0 [2021-12-06 17:23:01,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2021-12-06 17:23:01,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:23:01,534 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:23:01,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:23:01,535 INFO L85 PathProgramCache]: Analyzing trace with hash 948367783, now seen corresponding path program 1 times [2021-12-06 17:23:01,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:23:01,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300466918] [2021-12-06 17:23:01,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:23:01,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:23:01,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:23:01,539 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:23:01,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-12-06 17:23:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:23:02,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 17:23:02,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:23:02,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:23:02,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:23:02,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:23:02,181 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 15 treesize of output 9 [2021-12-06 17:23:02,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:02,568 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-06 17:23:02,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-12-06 17:23:02,578 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:23:02,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-12-06 17:23:02,624 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:23:02,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:23:04,830 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:23:04,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300466918] [2021-12-06 17:23:04,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300466918] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:23:04,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1475870157] [2021-12-06 17:23:04,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:23:04,830 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:23:04,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:23:04,831 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:23:04,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2021-12-06 17:23:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:23:05,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 17:23:05,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:23:05,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:23:05,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:23:06,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:06,029 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-06 17:23:06,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-12-06 17:23:06,040 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:23:06,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-12-06 17:23:06,065 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 17:23:06,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:23:06,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1475870157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:23:06,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:23:06,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 8 [2021-12-06 17:23:06,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843863072] [2021-12-06 17:23:06,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:23:06,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:23:06,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:23:06,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:23:06,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2021-12-06 17:23:06,066 INFO L87 Difference]: Start difference. First operand 356 states and 409 transitions. Second operand has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:23:06,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:23:06,454 INFO L93 Difference]: Finished difference Result 405 states and 461 transitions. [2021-12-06 17:23:06,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:23:06,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-12-06 17:23:06,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:23:06,456 INFO L225 Difference]: With dead ends: 405 [2021-12-06 17:23:06,456 INFO L226 Difference]: Without dead ends: 405 [2021-12-06 17:23:06,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2021-12-06 17:23:06,457 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 57 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:23:06,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 506 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 188 Invalid, 0 Unknown, 169 Unchecked, 0.4s Time] [2021-12-06 17:23:06,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-12-06 17:23:06,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 354. [2021-12-06 17:23:06,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 309 states have (on average 1.2233009708737863) internal successors, (378), 342 states have internal predecessors, (378), 5 states have call successors, (5), 3 states have call predecessors, (5), 8 states have return successors, (22), 8 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 17:23:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 405 transitions. [2021-12-06 17:23:06,463 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 405 transitions. Word has length 56 [2021-12-06 17:23:06,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:23:06,463 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 405 transitions. [2021-12-06 17:23:06,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:23:06,463 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 405 transitions. [2021-12-06 17:23:06,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 17:23:06,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:23:06,463 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:23:06,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (56)] Ended with exit code 0 [2021-12-06 17:23:06,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2021-12-06 17:23:06,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:23:06,865 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:23:06,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:23:06,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1897094198, now seen corresponding path program 1 times [2021-12-06 17:23:06,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:23:06,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202786314] [2021-12-06 17:23:06,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:23:06,868 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:23:06,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:23:06,871 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:23:06,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-12-06 17:23:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:23:07,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:23:07,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:23:07,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:23:07,725 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 16 treesize of output 8 [2021-12-06 17:23:07,732 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:23:07,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:23:07,732 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:23:07,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202786314] [2021-12-06 17:23:07,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202786314] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:23:07,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:23:07,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:23:07,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38060622] [2021-12-06 17:23:07,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:23:07,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:23:07,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:23:07,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:23:07,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:23:07,733 INFO L87 Difference]: Start difference. First operand 354 states and 405 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:23:08,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:23:08,047 INFO L93 Difference]: Finished difference Result 392 states and 443 transitions. [2021-12-06 17:23:08,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:23:08,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-12-06 17:23:08,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:23:08,049 INFO L225 Difference]: With dead ends: 392 [2021-12-06 17:23:08,049 INFO L226 Difference]: Without dead ends: 392 [2021-12-06 17:23:08,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:23:08,050 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 149 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:23:08,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 353 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:23:08,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-12-06 17:23:08,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 356. [2021-12-06 17:23:08,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 311 states have (on average 1.2218649517684887) internal successors, (380), 344 states have internal predecessors, (380), 5 states have call successors, (5), 3 states have call predecessors, (5), 8 states have return successors, (22), 8 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 17:23:08,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 407 transitions. [2021-12-06 17:23:08,055 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 407 transitions. Word has length 57 [2021-12-06 17:23:08,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:23:08,055 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 407 transitions. [2021-12-06 17:23:08,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:23:08,055 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 407 transitions. [2021-12-06 17:23:08,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 17:23:08,056 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:23:08,056 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:23:08,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2021-12-06 17:23:08,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:23:08,257 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:23:08,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:23:08,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1897093746, now seen corresponding path program 1 times [2021-12-06 17:23:08,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:23:08,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174764751] [2021-12-06 17:23:08,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:23:08,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:23:08,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:23:08,260 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:23:08,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-12-06 17:23:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:23:08,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:23:08,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:23:08,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:23:08,879 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 21 treesize of output 13 [2021-12-06 17:23:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:23:08,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:23:08,887 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:23:08,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174764751] [2021-12-06 17:23:08,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174764751] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:23:08,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:23:08,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:23:08,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231997679] [2021-12-06 17:23:08,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:23:08,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:23:08,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:23:08,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:23:08,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:23:08,888 INFO L87 Difference]: Start difference. First operand 356 states and 407 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:23:09,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:23:09,423 INFO L93 Difference]: Finished difference Result 374 states and 425 transitions. [2021-12-06 17:23:09,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:23:09,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-12-06 17:23:09,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:23:09,425 INFO L225 Difference]: With dead ends: 374 [2021-12-06 17:23:09,425 INFO L226 Difference]: Without dead ends: 374 [2021-12-06 17:23:09,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:23:09,426 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 121 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:23:09,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 340 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 17:23:09,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-12-06 17:23:09,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 358. [2021-12-06 17:23:09,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 313 states have (on average 1.2236421725239617) internal successors, (383), 346 states have internal predecessors, (383), 5 states have call successors, (5), 3 states have call predecessors, (5), 8 states have return successors, (22), 8 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 17:23:09,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 410 transitions. [2021-12-06 17:23:09,431 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 410 transitions. Word has length 57 [2021-12-06 17:23:09,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:23:09,431 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 410 transitions. [2021-12-06 17:23:09,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:23:09,431 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 410 transitions. [2021-12-06 17:23:09,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 17:23:09,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:23:09,432 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:23:09,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-12-06 17:23:09,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:23:09,633 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:23:09,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:23:09,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1897093745, now seen corresponding path program 1 times [2021-12-06 17:23:09,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:23:09,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942441386] [2021-12-06 17:23:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:23:09,636 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:23:09,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:23:09,638 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:23:09,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-12-06 17:23:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:23:10,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-06 17:23:10,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:23:10,185 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 6 treesize of output 5 [2021-12-06 17:23:10,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:23:10,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:23:10,362 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 15 treesize of output 9 [2021-12-06 17:23:10,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:10,645 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-06 17:23:10,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-12-06 17:23:10,658 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:23:10,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-12-06 17:23:10,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:23:10,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:23:10,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 17:23:11,002 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 15 treesize of output 7 [2021-12-06 17:23:11,047 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:23:11,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:23:11,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 17:23:11,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:11,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:11,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:11,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:13,613 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:23:13,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942441386] [2021-12-06 17:23:13,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942441386] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:23:13,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1574169099] [2021-12-06 17:23:13,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:23:13,613 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:23:13,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:23:13,614 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:23:13,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (60)] Waiting until timeout for monitored process [2021-12-06 17:23:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:23:14,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 17:23:14,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:23:14,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:23:14,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:23:14,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:14,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2021-12-06 17:23:14,913 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 15 treesize of output 7 [2021-12-06 17:23:15,027 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 17:23:15,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2021-12-06 17:23:15,129 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:23:15,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:23:15,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1574169099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:23:15,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:23:15,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 20 [2021-12-06 17:23:15,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466812982] [2021-12-06 17:23:15,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:23:15,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:23:15,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:23:15,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:23:15,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=497, Unknown=1, NotChecked=0, Total=552 [2021-12-06 17:23:15,131 INFO L87 Difference]: Start difference. First operand 358 states and 410 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:23:15,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:23:15,565 INFO L93 Difference]: Finished difference Result 378 states and 426 transitions. [2021-12-06 17:23:15,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:23:15,566 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-12-06 17:23:15,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:23:15,568 INFO L225 Difference]: With dead ends: 378 [2021-12-06 17:23:15,568 INFO L226 Difference]: Without dead ends: 378 [2021-12-06 17:23:15,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=66, Invalid=635, Unknown=1, NotChecked=0, Total=702 [2021-12-06 17:23:15,569 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 39 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:23:15,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1014 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 164 Unchecked, 0.3s Time] [2021-12-06 17:23:15,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-12-06 17:23:15,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 349. [2021-12-06 17:23:15,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 305 states have (on average 1.219672131147541) internal successors, (372), 337 states have internal predecessors, (372), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (17), 8 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 17:23:15,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 393 transitions. [2021-12-06 17:23:15,576 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 393 transitions. Word has length 57 [2021-12-06 17:23:15,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:23:15,576 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 393 transitions. [2021-12-06 17:23:15,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:23:15,576 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 393 transitions. [2021-12-06 17:23:15,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 17:23:15,577 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:23:15,577 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:23:15,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (60)] Ended with exit code 0 [2021-12-06 17:23:15,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-12-06 17:23:15,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:23:15,978 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:23:15,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:23:15,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1768854146, now seen corresponding path program 1 times [2021-12-06 17:23:15,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:23:15,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220725156] [2021-12-06 17:23:15,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:23:15,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:23:15,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:23:15,984 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:23:15,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-12-06 17:23:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:23:16,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 17:23:16,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:23:16,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 17:23:18,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:18,326 INFO L354 Elim1Store]: treesize reduction 58, result has 40.8 percent of original size [2021-12-06 17:23:18,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 59 [2021-12-06 17:23:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:23:18,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:23:19,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:23:19,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220725156] [2021-12-06 17:23:19,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220725156] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:23:19,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [896674924] [2021-12-06 17:23:19,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:23:19,034 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:23:19,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:23:19,035 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:23:19,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (62)] Waiting until timeout for monitored process [2021-12-06 17:23:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:23:19,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:23:19,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:23:19,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-12-06 17:23:23,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:23,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:23,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:23,998 INFO L354 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2021-12-06 17:23:23,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 44 [2021-12-06 17:23:24,345 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:23:24,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:23:26,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [896674924] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:23:26,581 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:23:26,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-12-06 17:23:26,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864949881] [2021-12-06 17:23:26,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:23:26,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 17:23:26,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:23:26,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 17:23:26,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=148, Unknown=2, NotChecked=0, Total=182 [2021-12-06 17:23:26,582 INFO L87 Difference]: Start difference. First operand 349 states and 393 transitions. Second operand has 11 states, 10 states have (on average 7.7) internal successors, (77), 11 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:23:30,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:23:30,701 INFO L93 Difference]: Finished difference Result 372 states and 417 transitions. [2021-12-06 17:23:30,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:23:30,701 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 11 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-12-06 17:23:30,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:23:30,702 INFO L225 Difference]: With dead ends: 372 [2021-12-06 17:23:30,703 INFO L226 Difference]: Without dead ends: 372 [2021-12-06 17:23:30,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=54, Invalid=249, Unknown=3, NotChecked=0, Total=306 [2021-12-06 17:23:30,703 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 29 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 241 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:23:30,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 790 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 241 Unchecked, 0.3s Time] [2021-12-06 17:23:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-12-06 17:23:30,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 366. [2021-12-06 17:23:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 321 states have (on average 1.2149532710280373) internal successors, (390), 353 states have internal predecessors, (390), 4 states have call successors, (4), 3 states have call predecessors, (4), 9 states have return successors, (17), 9 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 17:23:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 411 transitions. [2021-12-06 17:23:30,710 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 411 transitions. Word has length 57 [2021-12-06 17:23:30,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:23:30,710 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 411 transitions. [2021-12-06 17:23:30,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 11 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:23:30,710 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 411 transitions. [2021-12-06 17:23:30,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 17:23:30,711 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:23:30,711 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:23:30,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2021-12-06 17:23:30,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (62)] Ended with exit code 0 [2021-12-06 17:23:31,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 17:23:31,112 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:23:31,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:23:31,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1768854147, now seen corresponding path program 1 times [2021-12-06 17:23:31,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:23:31,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670216318] [2021-12-06 17:23:31,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:23:31,116 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:23:31,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:23:31,118 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:23:31,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-12-06 17:23:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:23:31,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 17:23:31,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:23:31,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 17:23:31,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-12-06 17:23:31,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:23:32,091 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 17:23:32,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 51 [2021-12-06 17:23:32,213 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 17:23:32,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 51 [2021-12-06 17:23:32,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-12-06 17:23:34,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:34,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:34,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:34,241 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-12-06 17:23:34,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 38 [2021-12-06 17:23:34,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:34,286 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-12-06 17:23:34,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 39 [2021-12-06 17:23:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 17:23:34,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:23:35,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:23:35,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670216318] [2021-12-06 17:23:35,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670216318] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:23:35,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1644609771] [2021-12-06 17:23:35,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:23:35,183 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:23:35,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:23:35,184 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:23:35,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (64)] Waiting until timeout for monitored process [2021-12-06 17:23:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:23:36,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 17:23:36,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:23:36,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:23:36,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:36,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 17:23:36,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:23:43,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:43,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:43,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:23:43,985 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-12-06 17:23:43,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 40 [2021-12-06 17:23:44,159 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:23:44,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:23:44,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1644609771] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:23:44,976 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:23:44,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2021-12-06 17:23:44,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061451160] [2021-12-06 17:23:44,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:23:44,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 17:23:44,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:23:44,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 17:23:44,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=402, Unknown=2, NotChecked=0, Total=462 [2021-12-06 17:23:44,977 INFO L87 Difference]: Start difference. First operand 366 states and 411 transitions. Second operand has 19 states, 18 states have (on average 5.166666666666667) internal successors, (93), 19 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:24:01,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:24:01,018 INFO L93 Difference]: Finished difference Result 369 states and 413 transitions. [2021-12-06 17:24:01,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 17:24:01,018 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.166666666666667) internal successors, (93), 19 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 57 [2021-12-06 17:24:01,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:24:01,020 INFO L225 Difference]: With dead ends: 369 [2021-12-06 17:24:01,020 INFO L226 Difference]: Without dead ends: 369 [2021-12-06 17:24:01,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=126, Invalid=857, Unknown=9, NotChecked=0, Total=992 [2021-12-06 17:24:01,020 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 36 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 386 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:24:01,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 1283 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 322 Invalid, 0 Unknown, 386 Unchecked, 0.7s Time] [2021-12-06 17:24:01,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-12-06 17:24:01,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 366. [2021-12-06 17:24:01,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 321 states have (on average 1.2118380062305296) internal successors, (389), 353 states have internal predecessors, (389), 4 states have call successors, (4), 3 states have call predecessors, (4), 9 states have return successors, (17), 9 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 17:24:01,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 410 transitions. [2021-12-06 17:24:01,025 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 410 transitions. Word has length 57 [2021-12-06 17:24:01,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:24:01,026 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 410 transitions. [2021-12-06 17:24:01,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.166666666666667) internal successors, (93), 19 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:24:01,026 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 410 transitions. [2021-12-06 17:24:01,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 17:24:01,026 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:24:01,026 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:24:01,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (64)] Ended with exit code 0 [2021-12-06 17:24:01,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (63)] Ended with exit code 0 [2021-12-06 17:24:01,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:24:01,427 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:24:01,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:24:01,428 INFO L85 PathProgramCache]: Analyzing trace with hash 848375861, now seen corresponding path program 1 times [2021-12-06 17:24:01,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:24:01,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142457835] [2021-12-06 17:24:01,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:24:01,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:24:01,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:24:01,433 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:24:01,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-12-06 17:24:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:01,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:24:01,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:24:01,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:24:02,031 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 15 treesize of output 9 [2021-12-06 17:24:03,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:24:03,447 INFO L354 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2021-12-06 17:24:03,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 39 [2021-12-06 17:24:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:24:03,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:24:07,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:24:07,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142457835] [2021-12-06 17:24:07,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142457835] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:24:07,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [772072193] [2021-12-06 17:24:07,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:24:07,681 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:24:07,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:24:07,682 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:24:07,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (66)] Waiting until timeout for monitored process [2021-12-06 17:24:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:08,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:24:08,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:24:08,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 17:24:10,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:24:10,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:24:10,092 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-06 17:24:10,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 29 [2021-12-06 17:24:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 17:24:10,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:24:10,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [772072193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:24:10,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:24:10,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2021-12-06 17:24:10,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242761425] [2021-12-06 17:24:10,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:24:10,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:24:10,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:24:10,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:24:10,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=170, Unknown=2, NotChecked=0, Total=210 [2021-12-06 17:24:10,182 INFO L87 Difference]: Start difference. First operand 366 states and 410 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:24:10,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:24:10,472 INFO L93 Difference]: Finished difference Result 387 states and 433 transitions. [2021-12-06 17:24:10,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:24:10,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-12-06 17:24:10,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:24:10,474 INFO L225 Difference]: With dead ends: 387 [2021-12-06 17:24:10,474 INFO L226 Difference]: Without dead ends: 387 [2021-12-06 17:24:10,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=50, Invalid=220, Unknown=2, NotChecked=0, Total=272 [2021-12-06 17:24:10,474 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 10 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:24:10,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 529 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 138 Unchecked, 0.2s Time] [2021-12-06 17:24:10,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-12-06 17:24:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 378. [2021-12-06 17:24:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 333 states have (on average 1.2072072072072073) internal successors, (402), 365 states have internal predecessors, (402), 4 states have call successors, (4), 3 states have call predecessors, (4), 9 states have return successors, (15), 9 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-06 17:24:10,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 421 transitions. [2021-12-06 17:24:10,479 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 421 transitions. Word has length 58 [2021-12-06 17:24:10,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:24:10,479 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 421 transitions. [2021-12-06 17:24:10,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:24:10,479 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 421 transitions. [2021-12-06 17:24:10,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 17:24:10,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:24:10,480 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:24:10,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (66)] Forceful destruction successful, exit code 0 [2021-12-06 17:24:10,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2021-12-06 17:24:10,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:24:10,881 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:24:10,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:24:10,883 INFO L85 PathProgramCache]: Analyzing trace with hash 848375862, now seen corresponding path program 1 times [2021-12-06 17:24:10,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:24:10,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245764141] [2021-12-06 17:24:10,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:24:10,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:24:10,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:24:10,886 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:24:10,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-12-06 17:24:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:11,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 17:24:11,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:24:11,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:24:11,392 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 15 treesize of output 9 [2021-12-06 17:24:11,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:24:11,832 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-06 17:24:11,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2021-12-06 17:24:11,845 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:24:11,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-12-06 17:24:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:24:11,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:24:14,178 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:24:14,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245764141] [2021-12-06 17:24:14,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245764141] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:24:14,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1154399574] [2021-12-06 17:24:14,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:24:14,179 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:24:14,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:24:14,179 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:24:14,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (68)] Waiting until timeout for monitored process [2021-12-06 17:24:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:14,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 17:24:14,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:24:14,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:24:14,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:24:14,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 17:24:15,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:24:17,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:24:17,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:24:17,484 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 17:24:17,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 28 [2021-12-06 17:24:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 17:24:17,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:24:17,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1154399574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:24:17,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:24:17,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2021-12-06 17:24:17,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022782705] [2021-12-06 17:24:17,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:24:17,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:24:17,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:24:17,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:24:17,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=258, Unknown=1, NotChecked=0, Total=306 [2021-12-06 17:24:17,643 INFO L87 Difference]: Start difference. First operand 378 states and 421 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:24:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:24:18,370 INFO L93 Difference]: Finished difference Result 378 states and 420 transitions. [2021-12-06 17:24:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:24:18,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2021-12-06 17:24:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:24:18,373 INFO L225 Difference]: With dead ends: 378 [2021-12-06 17:24:18,373 INFO L226 Difference]: Without dead ends: 378 [2021-12-06 17:24:18,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=60, Invalid=319, Unknown=1, NotChecked=0, Total=380 [2021-12-06 17:24:18,373 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 13 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:24:18,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 568 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 112 Unchecked, 0.6s Time] [2021-12-06 17:24:18,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-12-06 17:24:18,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 366. [2021-12-06 17:24:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 322 states have (on average 1.204968944099379) internal successors, (388), 354 states have internal predecessors, (388), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (14), 8 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-06 17:24:18,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 406 transitions. [2021-12-06 17:24:18,378 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 406 transitions. Word has length 58 [2021-12-06 17:24:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:24:18,378 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 406 transitions. [2021-12-06 17:24:18,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:24:18,378 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 406 transitions. [2021-12-06 17:24:18,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 17:24:18,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:24:18,378 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:24:18,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2021-12-06 17:24:18,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (68)] Ended with exit code 0 [2021-12-06 17:24:18,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 17:24:18,780 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:24:18,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:24:18,781 INFO L85 PathProgramCache]: Analyzing trace with hash -2094859879, now seen corresponding path program 1 times [2021-12-06 17:24:18,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:24:18,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171808415] [2021-12-06 17:24:18,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:24:18,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:24:18,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:24:18,785 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:24:18,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-12-06 17:24:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:19,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:24:19,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:24:19,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:24:22,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:24:22,754 INFO L354 Elim1Store]: treesize reduction 96, result has 27.8 percent of original size [2021-12-06 17:24:22,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 53 treesize of output 76 [2021-12-06 17:24:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:24:23,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:24:27,233 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:24:27,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171808415] [2021-12-06 17:24:27,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171808415] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:24:27,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [504622852] [2021-12-06 17:24:27,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:24:27,233 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:24:27,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:24:27,234 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:24:27,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (70)] Waiting until timeout for monitored process [2021-12-06 17:24:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:28,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 17:24:28,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:24:28,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:24:35,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:24:35,146 INFO L354 Elim1Store]: treesize reduction 70, result has 34.6 percent of original size [2021-12-06 17:24:35,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 74 [2021-12-06 17:24:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:24:35,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:24:39,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [504622852] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:24:39,664 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:24:39,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2021-12-06 17:24:39,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695857784] [2021-12-06 17:24:39,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:24:39,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 17:24:39,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:24:39,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 17:24:39,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=164, Unknown=5, NotChecked=0, Total=210 [2021-12-06 17:24:39,665 INFO L87 Difference]: Start difference. First operand 366 states and 406 transitions. Second operand has 13 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:24:46,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:24:46,002 INFO L93 Difference]: Finished difference Result 469 states and 524 transitions. [2021-12-06 17:24:46,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:24:46,002 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 59 [2021-12-06 17:24:46,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:24:46,004 INFO L225 Difference]: With dead ends: 469 [2021-12-06 17:24:46,004 INFO L226 Difference]: Without dead ends: 469 [2021-12-06 17:24:46,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 105 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=76, Invalid=297, Unknown=7, NotChecked=0, Total=380 [2021-12-06 17:24:46,004 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 89 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 268 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:24:46,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 795 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 268 Unchecked, 0.2s Time] [2021-12-06 17:24:46,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-12-06 17:24:46,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 389. [2021-12-06 17:24:46,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 345 states have (on average 1.2057971014492754) internal successors, (416), 377 states have internal predecessors, (416), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (14), 8 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-06 17:24:46,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 434 transitions. [2021-12-06 17:24:46,010 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 434 transitions. Word has length 59 [2021-12-06 17:24:46,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:24:46,010 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 434 transitions. [2021-12-06 17:24:46,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:24:46,010 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 434 transitions. [2021-12-06 17:24:46,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 17:24:46,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:24:46,010 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:24:46,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (70)] Ended with exit code 0 [2021-12-06 17:24:46,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (69)] Ended with exit code 0 [2021-12-06 17:24:46,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:24:46,412 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:24:46,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:24:46,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2094859878, now seen corresponding path program 1 times [2021-12-06 17:24:46,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:24:46,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536657844] [2021-12-06 17:24:46,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:24:46,415 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:24:46,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:24:46,417 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:24:46,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-12-06 17:24:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:47,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 17:24:47,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:24:47,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:24:47,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:24:51,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:24:51,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:24:51,805 INFO L354 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2021-12-06 17:24:51,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 39 [2021-12-06 17:24:51,850 INFO L354 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2021-12-06 17:24:51,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 49 [2021-12-06 17:24:51,951 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:24:51,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:24:54,279 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_create_data_~data~0.base_155 (_ BitVec 32)) (v_ArrVal_7552 (_ BitVec 32)) (v_ArrVal_7553 (_ BitVec 1))) (or (and (bvule |c_ULTIMATE.start_append_~node~0#1.offset| (bvadd (_ bv4 32) |c_ULTIMATE.start_append_~node~0#1.offset|)) (forall ((v_ArrVal_7555 (_ BitVec 32)) (v_ArrVal_7554 (_ BitVec 32)) (v_create_data_~nextData~0.base_53 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) |c_ULTIMATE.start_append_~node~0#1.offset|) (select (store (store (store |c_#length| v_create_data_~data~0.base_155 v_ArrVal_7555) v_ArrVal_7552 v_ArrVal_7554) v_create_data_~nextData~0.base_53 (_ bv16 32)) |c_ULTIMATE.start_append_~node~0#1.base|)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_create_data_~data~0.base_155 v_ArrVal_7553) v_ArrVal_7552))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_create_data_~data~0.base_155)))))))) is different from false [2021-12-06 17:24:54,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:24:54,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536657844] [2021-12-06 17:24:54,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536657844] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:24:54,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [14331844] [2021-12-06 17:24:54,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:24:54,284 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:24:54,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:24:54,285 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:24:54,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (72)] Waiting until timeout for monitored process [2021-12-06 17:24:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:24:55,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 17:24:55,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:24:55,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:24:55,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:25:15,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:15,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:15,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:15,097 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-12-06 17:25:15,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2021-12-06 17:25:15,129 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 17:25:15,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 44 [2021-12-06 17:25:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:25:15,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:25:15,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [14331844] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:25:15,546 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:25:15,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-12-06 17:25:15,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180466338] [2021-12-06 17:25:15,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:25:15,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 17:25:15,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:25:15,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 17:25:15,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=162, Unknown=10, NotChecked=26, Total=240 [2021-12-06 17:25:15,547 INFO L87 Difference]: Start difference. First operand 389 states and 434 transitions. Second operand has 13 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:25:15,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:25:15,900 INFO L93 Difference]: Finished difference Result 532 states and 594 transitions. [2021-12-06 17:25:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:25:15,901 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 59 [2021-12-06 17:25:15,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:25:15,902 INFO L225 Difference]: With dead ends: 532 [2021-12-06 17:25:15,902 INFO L226 Difference]: Without dead ends: 532 [2021-12-06 17:25:15,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=42, Invalid=162, Unknown=10, NotChecked=26, Total=240 [2021-12-06 17:25:15,903 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 119 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 348 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:25:15,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 1086 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 348 Unchecked, 0.3s Time] [2021-12-06 17:25:15,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-12-06 17:25:15,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 392. [2021-12-06 17:25:15,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 347 states have (on average 1.2046109510086456) internal successors, (418), 380 states have internal predecessors, (418), 4 states have call successors, (4), 3 states have call predecessors, (4), 9 states have return successors, (17), 8 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-06 17:25:15,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 439 transitions. [2021-12-06 17:25:15,909 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 439 transitions. Word has length 59 [2021-12-06 17:25:15,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:25:15,909 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 439 transitions. [2021-12-06 17:25:15,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:25:15,909 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 439 transitions. [2021-12-06 17:25:15,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 17:25:15,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:25:15,910 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:25:15,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (71)] Ended with exit code 0 [2021-12-06 17:25:16,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (72)] Ended with exit code 0 [2021-12-06 17:25:16,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 17:25:16,311 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:25:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:25:16,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1179322216, now seen corresponding path program 1 times [2021-12-06 17:25:16,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:25:16,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321740244] [2021-12-06 17:25:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:25:16,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:25:16,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:25:16,315 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:25:16,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-12-06 17:25:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:16,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 17:25:16,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:25:16,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-12-06 17:25:17,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:25:17,289 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 17:25:17,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 51 [2021-12-06 17:25:17,455 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 17:25:17,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 52 [2021-12-06 17:25:17,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-12-06 17:25:22,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:22,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:25:22,441 INFO L354 Elim1Store]: treesize reduction 73, result has 31.1 percent of original size [2021-12-06 17:25:22,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 53 treesize of output 72 [2021-12-06 17:25:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 17:25:23,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:25:24,064 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:25:24,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321740244] [2021-12-06 17:25:24,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321740244] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:25:24,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [959471043] [2021-12-06 17:25:24,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:25:24,064 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:25:24,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:25:24,065 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:25:24,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (74)] Waiting until timeout for monitored process [2021-12-06 17:25:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:25,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:25:25,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:25:25,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-12-06 17:25:27,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:27,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:27,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:27,416 INFO L354 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2021-12-06 17:25:27,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 44 [2021-12-06 17:25:27,580 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:25:27,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:25:27,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [959471043] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:25:27,834 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:25:27,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2021-12-06 17:25:27,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732968347] [2021-12-06 17:25:27,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:25:27,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 17:25:27,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:25:27,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 17:25:27,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-12-06 17:25:27,835 INFO L87 Difference]: Start difference. First operand 392 states and 439 transitions. Second operand has 15 states, 14 states have (on average 6.571428571428571) internal successors, (92), 15 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:25:30,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:25:30,872 INFO L93 Difference]: Finished difference Result 416 states and 464 transitions. [2021-12-06 17:25:30,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:25:30,872 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.571428571428571) internal successors, (92), 15 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 61 [2021-12-06 17:25:30,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:25:30,874 INFO L225 Difference]: With dead ends: 416 [2021-12-06 17:25:30,874 INFO L226 Difference]: Without dead ends: 416 [2021-12-06 17:25:30,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2021-12-06 17:25:30,874 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 57 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 287 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:25:30,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 806 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 287 Unchecked, 0.3s Time] [2021-12-06 17:25:30,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-12-06 17:25:30,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 406. [2021-12-06 17:25:30,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 361 states have (on average 1.2022160664819945) internal successors, (434), 393 states have internal predecessors, (434), 4 states have call successors, (4), 3 states have call predecessors, (4), 9 states have return successors, (15), 9 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-06 17:25:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 453 transitions. [2021-12-06 17:25:30,881 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 453 transitions. Word has length 61 [2021-12-06 17:25:30,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:25:30,882 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 453 transitions. [2021-12-06 17:25:30,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.571428571428571) internal successors, (92), 15 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:25:30,882 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 453 transitions. [2021-12-06 17:25:30,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 17:25:30,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:25:30,883 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:25:30,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (74)] Ended with exit code 0 [2021-12-06 17:25:31,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (73)] Ended with exit code 0 [2021-12-06 17:25:31,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:25:31,284 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:25:31,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:25:31,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1179322217, now seen corresponding path program 1 times [2021-12-06 17:25:31,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:25:31,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237272584] [2021-12-06 17:25:31,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:25:31,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:25:31,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:25:31,290 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:25:31,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-12-06 17:25:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:31,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 17:25:31,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:25:31,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:25:31,826 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 17:25:31,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-12-06 17:25:31,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:31,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 17:25:31,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:31,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:31,907 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:25:31,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2021-12-06 17:25:32,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-12-06 17:25:32,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 17:25:36,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:36,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:36,980 INFO L354 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2021-12-06 17:25:36,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 39 [2021-12-06 17:25:37,006 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:25:37,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-12-06 17:25:37,287 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:25:37,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:25:37,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:25:37,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237272584] [2021-12-06 17:25:37,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237272584] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:25:37,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2064178971] [2021-12-06 17:25:37,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:25:37,844 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:25:37,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:25:37,845 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:25:37,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (76)] Waiting until timeout for monitored process [2021-12-06 17:25:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:38,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 17:25:38,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:25:38,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:25:38,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:38,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 17:25:39,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:25:44,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:44,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:44,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:44,544 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-12-06 17:25:44,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 40 [2021-12-06 17:25:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:25:44,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:25:47,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2064178971] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:25:47,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:25:47,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-12-06 17:25:47,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897304960] [2021-12-06 17:25:47,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:25:47,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 17:25:47,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:25:47,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 17:25:47,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=315, Unknown=3, NotChecked=0, Total=380 [2021-12-06 17:25:47,948 INFO L87 Difference]: Start difference. First operand 406 states and 453 transitions. Second operand has 17 states, 16 states have (on average 6.125) internal successors, (98), 17 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:25:52,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:25:52,568 INFO L93 Difference]: Finished difference Result 410 states and 456 transitions. [2021-12-06 17:25:52,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:25:52,569 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.125) internal successors, (98), 17 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2021-12-06 17:25:52,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:25:52,570 INFO L225 Difference]: With dead ends: 410 [2021-12-06 17:25:52,570 INFO L226 Difference]: Without dead ends: 410 [2021-12-06 17:25:52,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=75, Invalid=426, Unknown=5, NotChecked=0, Total=506 [2021-12-06 17:25:52,571 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 20 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 327 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:25:52,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 893 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 327 Unchecked, 0.1s Time] [2021-12-06 17:25:52,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-12-06 17:25:52,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 400. [2021-12-06 17:25:52,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 356 states have (on average 1.202247191011236) internal successors, (428), 388 states have internal predecessors, (428), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (14), 8 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-06 17:25:52,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 446 transitions. [2021-12-06 17:25:52,575 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 446 transitions. Word has length 61 [2021-12-06 17:25:52,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:25:52,575 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 446 transitions. [2021-12-06 17:25:52,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.125) internal successors, (98), 17 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:25:52,576 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 446 transitions. [2021-12-06 17:25:52,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 17:25:52,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:25:52,576 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:25:52,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (76)] Ended with exit code 0 [2021-12-06 17:25:52,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (75)] Ended with exit code 0 [2021-12-06 17:25:52,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:25:52,978 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:25:52,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:25:52,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1611932791, now seen corresponding path program 1 times [2021-12-06 17:25:52,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:25:52,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775508822] [2021-12-06 17:25:52,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:25:52,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:25:52,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:25:52,982 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:25:52,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-12-06 17:25:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:53,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-06 17:25:53,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:25:53,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:25:53,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:25:53,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:25:53,753 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 15 treesize of output 9 [2021-12-06 17:25:54,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:54,080 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-06 17:25:54,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-12-06 17:25:54,095 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:25:54,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-12-06 17:25:54,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:25:54,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:25:54,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 17:25:54,576 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 15 treesize of output 7 [2021-12-06 17:25:54,631 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:25:54,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:25:54,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 17:25:54,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:54,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:54,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:54,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:25:56,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:25:56,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775508822] [2021-12-06 17:25:56,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775508822] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:25:56,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1922084367] [2021-12-06 17:25:56,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:25:56,856 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:25:56,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:25:56,857 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:25:56,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (78)] Waiting until timeout for monitored process [2021-12-06 17:25:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:25:57,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 17:25:57,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:25:57,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:25:57,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:26:00,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:26:00,432 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-06 17:26:00,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-12-06 17:26:00,451 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:26:00,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-12-06 17:26:00,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:26:00,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:26:01,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 17:26:01,216 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 15 treesize of output 7 [2021-12-06 17:26:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:26:01,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:26:01,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1922084367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:01,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:26:01,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 15 [2021-12-06 17:26:01,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257897748] [2021-12-06 17:26:01,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:01,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 17:26:01,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:26:01,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 17:26:01,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:26:01,230 INFO L87 Difference]: Start difference. First operand 400 states and 446 transitions. Second operand has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:26:01,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:01,467 INFO L93 Difference]: Finished difference Result 482 states and 555 transitions. [2021-12-06 17:26:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:26:01,468 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-12-06 17:26:01,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:01,470 INFO L225 Difference]: With dead ends: 482 [2021-12-06 17:26:01,470 INFO L226 Difference]: Without dead ends: 482 [2021-12-06 17:26:01,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:26:01,470 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 50 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:01,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 474 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 88 Invalid, 0 Unknown, 172 Unchecked, 0.2s Time] [2021-12-06 17:26:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-12-06 17:26:01,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 462. [2021-12-06 17:26:01,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 414 states have (on average 1.2053140096618358) internal successors, (499), 447 states have internal predecessors, (499), 6 states have call successors, (6), 3 states have call predecessors, (6), 10 states have return successors, (27), 11 states have call predecessors, (27), 6 states have call successors, (27) [2021-12-06 17:26:01,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 532 transitions. [2021-12-06 17:26:01,479 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 532 transitions. Word has length 61 [2021-12-06 17:26:01,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:01,479 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 532 transitions. [2021-12-06 17:26:01,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:26:01,480 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 532 transitions. [2021-12-06 17:26:01,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 17:26:01,480 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:01,480 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:01,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-12-06 17:26:01,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (78)] Ended with exit code 0 [2021-12-06 17:26:01,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 17:26:01,882 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:26:01,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:01,883 INFO L85 PathProgramCache]: Analyzing trace with hash 939726753, now seen corresponding path program 1 times [2021-12-06 17:26:01,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:26:01,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376865294] [2021-12-06 17:26:01,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:01,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:26:01,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:26:01,887 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:26:01,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-12-06 17:26:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:02,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:26:02,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:26:02,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:26:02,465 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 21 treesize of output 13 [2021-12-06 17:26:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:26:02,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:26:02,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:26:02,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1376865294] [2021-12-06 17:26:02,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1376865294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:02,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:02,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:26:02,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697801408] [2021-12-06 17:26:02,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:02,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:26:02,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:26:02,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:26:02,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:26:02,476 INFO L87 Difference]: Start difference. First operand 462 states and 532 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:26:03,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:03,071 INFO L93 Difference]: Finished difference Result 477 states and 546 transitions. [2021-12-06 17:26:03,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:26:03,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-12-06 17:26:03,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:03,074 INFO L225 Difference]: With dead ends: 477 [2021-12-06 17:26:03,074 INFO L226 Difference]: Without dead ends: 477 [2021-12-06 17:26:03,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:26:03,074 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 129 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:03,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 335 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 17:26:03,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-12-06 17:26:03,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 465. [2021-12-06 17:26:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 417 states have (on average 1.2062350119904077) internal successors, (503), 450 states have internal predecessors, (503), 6 states have call successors, (6), 3 states have call predecessors, (6), 10 states have return successors, (27), 11 states have call predecessors, (27), 6 states have call successors, (27) [2021-12-06 17:26:03,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 536 transitions. [2021-12-06 17:26:03,080 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 536 transitions. Word has length 64 [2021-12-06 17:26:03,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:03,080 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 536 transitions. [2021-12-06 17:26:03,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:26:03,080 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 536 transitions. [2021-12-06 17:26:03,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 17:26:03,080 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:03,081 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:03,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (79)] Ended with exit code 0 [2021-12-06 17:26:03,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:26:03,282 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:26:03,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:03,283 INFO L85 PathProgramCache]: Analyzing trace with hash 939726754, now seen corresponding path program 1 times [2021-12-06 17:26:03,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:26:03,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109109879] [2021-12-06 17:26:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:03,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:26:03,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:26:03,287 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:26:03,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-12-06 17:26:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:03,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 17:26:03,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:26:03,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:26:03,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:26:03,911 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 17 treesize of output 9 [2021-12-06 17:26:03,915 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 15 treesize of output 7 [2021-12-06 17:26:03,932 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:26:03,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:26:03,932 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:26:03,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109109879] [2021-12-06 17:26:03,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109109879] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:03,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:03,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:26:03,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111156805] [2021-12-06 17:26:03,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:03,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:26:03,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:26:03,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:26:03,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:26:03,933 INFO L87 Difference]: Start difference. First operand 465 states and 536 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:26:04,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:04,659 INFO L93 Difference]: Finished difference Result 493 states and 562 transitions. [2021-12-06 17:26:04,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:26:04,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-12-06 17:26:04,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:04,662 INFO L225 Difference]: With dead ends: 493 [2021-12-06 17:26:04,662 INFO L226 Difference]: Without dead ends: 493 [2021-12-06 17:26:04,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:26:04,662 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 159 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:04,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 333 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 17:26:04,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-12-06 17:26:04,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 465. [2021-12-06 17:26:04,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 417 states have (on average 1.2038369304556356) internal successors, (502), 450 states have internal predecessors, (502), 6 states have call successors, (6), 3 states have call predecessors, (6), 10 states have return successors, (27), 11 states have call predecessors, (27), 6 states have call successors, (27) [2021-12-06 17:26:04,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 535 transitions. [2021-12-06 17:26:04,668 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 535 transitions. Word has length 64 [2021-12-06 17:26:04,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:04,668 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 535 transitions. [2021-12-06 17:26:04,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:26:04,668 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 535 transitions. [2021-12-06 17:26:04,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 17:26:04,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:04,669 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:04,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-12-06 17:26:04,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:26:04,870 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:26:04,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:04,870 INFO L85 PathProgramCache]: Analyzing trace with hash 504851823, now seen corresponding path program 1 times [2021-12-06 17:26:04,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:26:04,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253155826] [2021-12-06 17:26:04,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:04,871 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:26:04,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:26:04,873 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:26:04,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-12-06 17:26:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:05,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-06 17:26:05,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:26:05,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:26:05,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:26:05,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:26:05,817 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 15 treesize of output 9 [2021-12-06 17:26:06,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:26:06,219 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-06 17:26:06,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-12-06 17:26:06,238 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:26:06,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-12-06 17:26:06,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:26:06,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:26:06,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 17:26:06,731 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 15 treesize of output 7 [2021-12-06 17:26:06,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:26:06,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:26:07,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 17:26:07,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:26:07,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:26:07,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:26:07,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:26:08,120 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:26:08,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253155826] [2021-12-06 17:26:08,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253155826] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:26:08,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [489416682] [2021-12-06 17:26:08,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:08,121 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:26:08,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:26:08,122 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:26:08,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (82)] Waiting until timeout for monitored process [2021-12-06 17:26:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:09,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 17:26:09,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:26:09,077 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 6 treesize of output 5 [2021-12-06 17:26:09,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:26:09,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:26:09,761 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-06 17:26:09,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2021-12-06 17:26:09,776 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:26:09,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-12-06 17:26:09,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:26:09,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:26:10,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 17:26:10,515 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 15 treesize of output 7 [2021-12-06 17:26:10,530 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:26:10,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:26:10,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [489416682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:10,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:26:10,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 15 [2021-12-06 17:26:10,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487671893] [2021-12-06 17:26:10,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:10,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 17:26:10,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:26:10,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 17:26:10,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:26:10,532 INFO L87 Difference]: Start difference. First operand 465 states and 535 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:26:10,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:10,756 INFO L93 Difference]: Finished difference Result 556 states and 655 transitions. [2021-12-06 17:26:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:26:10,757 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-12-06 17:26:10,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:10,759 INFO L225 Difference]: With dead ends: 556 [2021-12-06 17:26:10,759 INFO L226 Difference]: Without dead ends: 556 [2021-12-06 17:26:10,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:26:10,759 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 58 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 244 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:10,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 534 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 244 Unchecked, 0.2s Time] [2021-12-06 17:26:10,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-12-06 17:26:10,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 465. [2021-12-06 17:26:10,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 417 states have (on average 1.2038369304556356) internal successors, (502), 450 states have internal predecessors, (502), 6 states have call successors, (6), 3 states have call predecessors, (6), 10 states have return successors, (27), 11 states have call predecessors, (27), 6 states have call successors, (27) [2021-12-06 17:26:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 535 transitions. [2021-12-06 17:26:10,768 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 535 transitions. Word has length 65 [2021-12-06 17:26:10,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:10,768 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 535 transitions. [2021-12-06 17:26:10,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:26:10,768 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 535 transitions. [2021-12-06 17:26:10,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 17:26:10,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:10,769 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:10,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (82)] Ended with exit code 0 [2021-12-06 17:26:10,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (81)] Ended with exit code 0 [2021-12-06 17:26:11,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:26:11,171 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:26:11,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:11,172 INFO L85 PathProgramCache]: Analyzing trace with hash -665539789, now seen corresponding path program 1 times [2021-12-06 17:26:11,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:26:11,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722613876] [2021-12-06 17:26:11,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:11,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:26:11,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:26:11,176 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:26:11,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-12-06 17:26:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:11,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 17:26:11,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:26:11,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:26:11,928 INFO L354 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2021-12-06 17:26:11,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2021-12-06 17:26:12,042 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-12-06 17:26:12,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-12-06 17:26:12,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-12-06 17:26:12,192 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:26:12,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:26:12,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-12-06 17:26:12,489 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 17:26:12,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 33 [2021-12-06 17:26:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:26:12,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:26:12,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722613876] [2021-12-06 17:26:12,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722613876] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:26:12,555 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:26:12,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-12-06 17:26:12,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25006078] [2021-12-06 17:26:12,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:26:12,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 17:26:12,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:26:12,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 17:26:12,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:26:12,555 INFO L87 Difference]: Start difference. First operand 465 states and 535 transitions. Second operand has 14 states, 13 states have (on average 4.923076923076923) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:26:13,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:13,599 INFO L93 Difference]: Finished difference Result 558 states and 646 transitions. [2021-12-06 17:26:13,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:26:13,599 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.923076923076923) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-12-06 17:26:13,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:13,601 INFO L225 Difference]: With dead ends: 558 [2021-12-06 17:26:13,601 INFO L226 Difference]: Without dead ends: 558 [2021-12-06 17:26:13,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 115 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:26:13,601 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 177 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 264 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:13,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 766 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 327 Invalid, 0 Unknown, 264 Unchecked, 0.8s Time] [2021-12-06 17:26:13,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-12-06 17:26:13,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 493. [2021-12-06 17:26:13,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 445 states have (on average 1.2134831460674158) internal successors, (540), 478 states have internal predecessors, (540), 6 states have call successors, (6), 3 states have call predecessors, (6), 10 states have return successors, (27), 11 states have call predecessors, (27), 6 states have call successors, (27) [2021-12-06 17:26:13,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 573 transitions. [2021-12-06 17:26:13,608 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 573 transitions. Word has length 65 [2021-12-06 17:26:13,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:13,608 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 573 transitions. [2021-12-06 17:26:13,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.923076923076923) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:26:13,608 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 573 transitions. [2021-12-06 17:26:13,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 17:26:13,609 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:13,609 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:13,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (83)] Ended with exit code 0 [2021-12-06 17:26:13,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:26:13,810 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:26:13,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:13,811 INFO L85 PathProgramCache]: Analyzing trace with hash -665539788, now seen corresponding path program 1 times [2021-12-06 17:26:13,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:26:13,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389866030] [2021-12-06 17:26:13,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:13,813 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:26:13,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:26:13,815 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:26:13,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-12-06 17:26:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:14,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-06 17:26:14,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:26:14,417 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 17:26:14,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-06 17:26:14,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:26:14,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:26:14,664 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-06 17:26:14,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-12-06 17:26:14,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 17:26:14,771 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-12-06 17:26:14,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 26 [2021-12-06 17:26:14,797 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-12-06 17:26:14,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2021-12-06 17:26:14,935 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-06 17:26:14,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2021-12-06 17:26:14,940 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-06 17:26:14,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 16 [2021-12-06 17:26:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:26:14,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:26:17,895 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 96 treesize of output 92 [2021-12-06 17:26:17,898 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 139 treesize of output 123 [2021-12-06 17:26:18,225 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 17:26:18,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 16 [2021-12-06 17:26:18,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 54 [2021-12-06 17:26:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:26:18,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:26:18,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389866030] [2021-12-06 17:26:18,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389866030] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:26:18,616 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:26:18,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-12-06 17:26:18,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084125428] [2021-12-06 17:26:18,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:26:18,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 17:26:18,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:26:18,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 17:26:18,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:26:18,617 INFO L87 Difference]: Start difference. First operand 493 states and 573 transitions. Second operand has 17 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:26:20,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:20,756 INFO L93 Difference]: Finished difference Result 574 states and 662 transitions. [2021-12-06 17:26:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:26:20,757 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 65 [2021-12-06 17:26:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:20,759 INFO L225 Difference]: With dead ends: 574 [2021-12-06 17:26:20,759 INFO L226 Difference]: Without dead ends: 574 [2021-12-06 17:26:20,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-12-06 17:26:20,760 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 253 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 401 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:20,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 989 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 462 Invalid, 0 Unknown, 401 Unchecked, 1.8s Time] [2021-12-06 17:26:20,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-12-06 17:26:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 493. [2021-12-06 17:26:20,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 445 states have (on average 1.2112359550561798) internal successors, (539), 478 states have internal predecessors, (539), 6 states have call successors, (6), 3 states have call predecessors, (6), 10 states have return successors, (27), 11 states have call predecessors, (27), 6 states have call successors, (27) [2021-12-06 17:26:20,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 572 transitions. [2021-12-06 17:26:20,769 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 572 transitions. Word has length 65 [2021-12-06 17:26:20,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:20,769 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 572 transitions. [2021-12-06 17:26:20,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:26:20,769 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 572 transitions. [2021-12-06 17:26:20,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 17:26:20,770 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:20,770 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:20,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (84)] Ended with exit code 0 [2021-12-06 17:26:20,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:26:20,971 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:26:20,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:20,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1286364406, now seen corresponding path program 1 times [2021-12-06 17:26:20,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:26:20,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478576926] [2021-12-06 17:26:20,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:20,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:26:20,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:26:20,976 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:26:20,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-12-06 17:26:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:22,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 17:26:22,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:26:22,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:26:22,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:26:22,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:26:22,305 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-06 17:26:22,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 30 [2021-12-06 17:26:22,615 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 15 treesize of output 7 [2021-12-06 17:26:22,665 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:26:22,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 38 [2021-12-06 17:26:22,695 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:26:22,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:26:22,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:26:22,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478576926] [2021-12-06 17:26:22,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478576926] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:22,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:22,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 17:26:22,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496409544] [2021-12-06 17:26:22,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:22,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:26:22,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:26:22,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:26:22,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:26:22,696 INFO L87 Difference]: Start difference. First operand 493 states and 572 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:26:23,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:23,884 INFO L93 Difference]: Finished difference Result 549 states and 644 transitions. [2021-12-06 17:26:23,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:26:23,885 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-12-06 17:26:23,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:23,886 INFO L225 Difference]: With dead ends: 549 [2021-12-06 17:26:23,887 INFO L226 Difference]: Without dead ends: 549 [2021-12-06 17:26:23,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:26:23,887 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 81 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:23,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 758 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 510 Invalid, 0 Unknown, 121 Unchecked, 1.0s Time] [2021-12-06 17:26:23,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-12-06 17:26:23,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 523. [2021-12-06 17:26:23,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 474 states have (on average 1.2236286919831223) internal successors, (580), 504 states have internal predecessors, (580), 7 states have call successors, (7), 3 states have call predecessors, (7), 10 states have return successors, (32), 15 states have call predecessors, (32), 7 states have call successors, (32) [2021-12-06 17:26:23,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 619 transitions. [2021-12-06 17:26:23,893 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 619 transitions. Word has length 65 [2021-12-06 17:26:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:23,893 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 619 transitions. [2021-12-06 17:26:23,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:26:23,893 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 619 transitions. [2021-12-06 17:26:23,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 17:26:23,894 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:23,894 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:23,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (85)] Ended with exit code 0 [2021-12-06 17:26:24,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:26:24,095 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:26:24,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:24,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1286364405, now seen corresponding path program 1 times [2021-12-06 17:26:24,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:26:24,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46888158] [2021-12-06 17:26:24,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:24,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:26:24,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:26:24,100 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:26:24,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-12-06 17:26:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:24,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-06 17:26:24,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:26:24,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:26:24,794 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:26:24,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-12-06 17:26:24,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:26:25,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:26:25,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:26:25,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 17:26:25,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 17:26:25,365 INFO L354 Elim1Store]: treesize reduction 29, result has 9.4 percent of original size [2021-12-06 17:26:25,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 37 [2021-12-06 17:26:25,377 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 17:26:25,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-12-06 17:26:25,407 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:26:25,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:26:25,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:26:25,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46888158] [2021-12-06 17:26:25,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46888158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:25,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:25,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 17:26:25,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186278744] [2021-12-06 17:26:25,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:25,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:26:25,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:26:25,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:26:25,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:26:25,408 INFO L87 Difference]: Start difference. First operand 523 states and 619 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:26:27,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:27,852 INFO L93 Difference]: Finished difference Result 706 states and 814 transitions. [2021-12-06 17:26:27,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 17:26:27,853 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-12-06 17:26:27,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:27,855 INFO L225 Difference]: With dead ends: 706 [2021-12-06 17:26:27,855 INFO L226 Difference]: Without dead ends: 706 [2021-12-06 17:26:27,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-12-06 17:26:27,856 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 282 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:27,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 949 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 872 Invalid, 0 Unknown, 147 Unchecked, 2.0s Time] [2021-12-06 17:26:27,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-12-06 17:26:27,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 510. [2021-12-06 17:26:27,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 462 states have (on average 1.225108225108225) internal successors, (566), 490 states have internal predecessors, (566), 7 states have call successors, (7), 3 states have call predecessors, (7), 9 states have return successors, (27), 16 states have call predecessors, (27), 7 states have call successors, (27) [2021-12-06 17:26:27,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 600 transitions. [2021-12-06 17:26:27,863 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 600 transitions. Word has length 65 [2021-12-06 17:26:27,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:27,863 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 600 transitions. [2021-12-06 17:26:27,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:26:27,865 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 600 transitions. [2021-12-06 17:26:27,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 17:26:27,865 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:27,865 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:27,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-12-06 17:26:28,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:26:28,067 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:26:28,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:28,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1134284034, now seen corresponding path program 1 times [2021-12-06 17:26:28,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:26:28,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749548629] [2021-12-06 17:26:28,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:28,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:26:28,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:26:28,072 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:26:28,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-12-06 17:26:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:28,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 17:26:28,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:26:28,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-12-06 17:26:28,821 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:26:28,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2021-12-06 17:26:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:26:28,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:26:28,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:26:28,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749548629] [2021-12-06 17:26:28,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749548629] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:28,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:28,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:26:28,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312920027] [2021-12-06 17:26:28,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:28,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:26:28,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:26:28,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:26:28,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:26:28,867 INFO L87 Difference]: Start difference. First operand 510 states and 600 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:26:29,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:29,853 INFO L93 Difference]: Finished difference Result 531 states and 621 transitions. [2021-12-06 17:26:29,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:26:29,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-12-06 17:26:29,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:29,855 INFO L225 Difference]: With dead ends: 531 [2021-12-06 17:26:29,855 INFO L226 Difference]: Without dead ends: 531 [2021-12-06 17:26:29,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:26:29,856 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 33 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:29,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 575 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 317 Invalid, 0 Unknown, 74 Unchecked, 0.9s Time] [2021-12-06 17:26:29,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-12-06 17:26:29,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 523. [2021-12-06 17:26:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 475 states have (on average 1.223157894736842) internal successors, (581), 503 states have internal predecessors, (581), 7 states have call successors, (7), 3 states have call predecessors, (7), 9 states have return successors, (27), 16 states have call predecessors, (27), 7 states have call successors, (27) [2021-12-06 17:26:29,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 615 transitions. [2021-12-06 17:26:29,862 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 615 transitions. Word has length 66 [2021-12-06 17:26:29,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:29,862 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 615 transitions. [2021-12-06 17:26:29,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:26:29,862 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 615 transitions. [2021-12-06 17:26:29,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 17:26:29,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:29,862 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:29,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (87)] Ended with exit code 0 [2021-12-06 17:26:30,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:26:30,063 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:26:30,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:30,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1134284035, now seen corresponding path program 1 times [2021-12-06 17:26:30,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:26:30,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790604940] [2021-12-06 17:26:30,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:26:30,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:26:30,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:26:30,065 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:26:30,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-12-06 17:26:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:26:30,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 17:26:30,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:26:30,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:26:30,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:26:30,787 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-12-06 17:26:30,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 17:26:31,247 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:26:31,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 48 [2021-12-06 17:26:31,264 INFO L354 Elim1Store]: treesize reduction 26, result has 10.3 percent of original size [2021-12-06 17:26:31,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 23 [2021-12-06 17:26:31,338 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:26:31,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:26:31,338 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:26:31,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790604940] [2021-12-06 17:26:31,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790604940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:26:31,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:26:31,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-06 17:26:31,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626211125] [2021-12-06 17:26:31,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:26:31,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 17:26:31,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:26:31,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 17:26:31,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:26:31,339 INFO L87 Difference]: Start difference. First operand 523 states and 615 transitions. Second operand has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:26:33,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:26:33,185 INFO L93 Difference]: Finished difference Result 675 states and 804 transitions. [2021-12-06 17:26:33,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 17:26:33,186 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-12-06 17:26:33,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:26:33,191 INFO L225 Difference]: With dead ends: 675 [2021-12-06 17:26:33,191 INFO L226 Difference]: Without dead ends: 675 [2021-12-06 17:26:33,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2021-12-06 17:26:33,191 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 231 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:26:33,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 847 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 597 Invalid, 0 Unknown, 85 Unchecked, 1.3s Time] [2021-12-06 17:26:33,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-12-06 17:26:33,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 576. [2021-12-06 17:26:33,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 527 states have (on average 1.2352941176470589) internal successors, (651), 553 states have internal predecessors, (651), 7 states have call successors, (7), 3 states have call predecessors, (7), 10 states have return successors, (32), 19 states have call predecessors, (32), 7 states have call successors, (32) [2021-12-06 17:26:33,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 690 transitions. [2021-12-06 17:26:33,199 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 690 transitions. Word has length 66 [2021-12-06 17:26:33,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:26:33,199 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 690 transitions. [2021-12-06 17:26:33,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:26:33,199 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 690 transitions. [2021-12-06 17:26:33,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 17:26:33,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:26:33,200 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:26:33,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-12-06 17:26:33,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 17:26:33,401 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:26:33,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:26:33,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1667627081, now seen corresponding path program 2 times [2021-12-06 17:26:33,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:26:33,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642997453] [2021-12-06 17:26:33,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:26:33,404 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:26:33,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:26:33,406 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:26:33,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-12-06 17:26:34,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:26:34,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:26:34,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 17:26:34,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:26:34,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:26:34,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:26:45,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:26:45,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:26:45,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:26:45,544 INFO L354 Elim1Store]: treesize reduction 83, result has 33.6 percent of original size [2021-12-06 17:26:45,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 50 [2021-12-06 17:26:45,590 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 17:26:45,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 42 [2021-12-06 17:26:45,849 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:26:45,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:26:46,327 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:26:46,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642997453] [2021-12-06 17:26:46,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642997453] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:26:46,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1461971767] [2021-12-06 17:26:46,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:26:46,327 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:26:46,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:26:46,328 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:26:46,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (90)] Waiting until timeout for monitored process [2021-12-06 17:26:47,130 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:26:47,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945790418] [2021-12-06 17:26:47,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:26:47,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:26:47,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:26:47,132 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:26:47,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-12-06 17:26:47,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (90)] Ended with exit code 1 [2021-12-06 17:26:49,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:26:49,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:26:49,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 17:26:49,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:26:49,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:26:49,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:26:49,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:26:49,517 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 17:26:49,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 45 [2021-12-06 17:26:49,624 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 17:26:49,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2021-12-06 17:26:49,754 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 32 treesize of output 20 [2021-12-06 17:26:52,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:26:57,779 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:26:57,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-12-06 17:27:00,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:27:00,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:27:00,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:27:00,424 INFO L354 Elim1Store]: treesize reduction 69, result has 34.9 percent of original size [2021-12-06 17:27:00,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 50 [2021-12-06 17:27:00,469 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 17:27:00,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 43 [2021-12-06 17:27:00,876 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 17:27:00,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:27:01,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 17:27:03,807 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_11041 (_ BitVec 32)) (v_create_data_~nextData~0.base_78 (_ BitVec 32)) (v_create_data_~data~0.base_215 (_ BitVec 32)) (v_create_data_~nextData~0.base_77 (_ BitVec 32))) (or (and (bvule |c_ULTIMATE.start_append_~node~0#1.offset| (bvadd (_ bv4 32) |c_ULTIMATE.start_append_~node~0#1.offset|)) (forall ((v_ArrVal_11043 (_ BitVec 32)) (v_ArrVal_11042 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) |c_ULTIMATE.start_append_~node~0#1.offset|) (select (store (store (store (store |c_#length| v_create_data_~data~0.base_215 v_ArrVal_11042) v_ArrVal_11041 v_ArrVal_11043) v_create_data_~nextData~0.base_77 (_ bv16 32)) v_create_data_~nextData~0.base_78 (_ bv16 32)) |c_ULTIMATE.start_append_~node~0#1.base|)))) (not (= (_ bv0 1) (bvneg (bvneg (select (store |c_#valid| v_create_data_~data~0.base_215 (_ bv1 1)) v_ArrVal_11041))))) (= v_create_data_~nextData~0.base_77 v_create_data_~nextData~0.base_78) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_create_data_~data~0.base_215)))))) is different from false [2021-12-06 17:27:03,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945790418] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:27:03,814 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:27:03,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 16 [2021-12-06 17:27:03,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333540967] [2021-12-06 17:27:03,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:27:03,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 17:27:03,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:27:03,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 17:27:03,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=286, Unknown=6, NotChecked=34, Total=380 [2021-12-06 17:27:03,815 INFO L87 Difference]: Start difference. First operand 576 states and 690 transitions. Second operand has 17 states, 16 states have (on average 5.75) internal successors, (92), 15 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:27:04,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:27:04,250 INFO L93 Difference]: Finished difference Result 725 states and 857 transitions. [2021-12-06 17:27:04,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 17:27:04,250 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.75) internal successors, (92), 15 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2021-12-06 17:27:04,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:27:04,253 INFO L225 Difference]: With dead ends: 725 [2021-12-06 17:27:04,253 INFO L226 Difference]: Without dead ends: 725 [2021-12-06 17:27:04,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 113 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=54, Invalid=286, Unknown=6, NotChecked=34, Total=380 [2021-12-06 17:27:04,253 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 147 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 493 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:27:04,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 1416 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 194 Invalid, 0 Unknown, 493 Unchecked, 0.4s Time] [2021-12-06 17:27:04,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-12-06 17:27:04,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 590. [2021-12-06 17:27:04,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 540 states have (on average 1.2314814814814814) internal successors, (665), 567 states have internal predecessors, (665), 7 states have call successors, (7), 3 states have call predecessors, (7), 11 states have return successors, (38), 19 states have call predecessors, (38), 7 states have call successors, (38) [2021-12-06 17:27:04,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 710 transitions. [2021-12-06 17:27:04,261 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 710 transitions. Word has length 66 [2021-12-06 17:27:04,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:27:04,261 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 710 transitions. [2021-12-06 17:27:04,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.75) internal successors, (92), 15 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:27:04,261 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 710 transitions. [2021-12-06 17:27:04,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 17:27:04,262 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:27:04,262 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:27:04,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (89)] Ended with exit code 0 [2021-12-06 17:27:04,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2021-12-06 17:27:04,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:27:04,664 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:27:04,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:27:04,665 INFO L85 PathProgramCache]: Analyzing trace with hash -747494557, now seen corresponding path program 1 times [2021-12-06 17:27:04,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:27:04,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758828484] [2021-12-06 17:27:04,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:27:04,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:27:04,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:27:04,669 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:27:04,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-12-06 17:27:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:05,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 17:27:05,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:27:05,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:27:09,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:27:09,422 INFO L354 Elim1Store]: treesize reduction 96, result has 27.8 percent of original size [2021-12-06 17:27:09,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 52 treesize of output 75 [2021-12-06 17:27:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 17:27:09,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:27:13,673 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:27:13,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758828484] [2021-12-06 17:27:13,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758828484] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:27:13,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [779801899] [2021-12-06 17:27:13,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:27:13,674 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:27:13,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:27:13,674 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:27:13,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (93)] Waiting until timeout for monitored process [2021-12-06 17:27:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:14,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 17:27:14,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:27:14,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:27:32,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:27:32,730 INFO L354 Elim1Store]: treesize reduction 70, result has 34.6 percent of original size [2021-12-06 17:27:32,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 75 [2021-12-06 17:27:32,775 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 17:27:32,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:27:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 17:27:40,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [779801899] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 17:27:40,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:27:40,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 6] total 14 [2021-12-06 17:27:40,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613917449] [2021-12-06 17:27:40,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:27:40,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:27:40,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:27:40,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:27:40,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=168, Unknown=6, NotChecked=0, Total=240 [2021-12-06 17:27:40,678 INFO L87 Difference]: Start difference. First operand 590 states and 710 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:27:40,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:27:40,816 INFO L93 Difference]: Finished difference Result 600 states and 717 transitions. [2021-12-06 17:27:40,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:27:40,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2021-12-06 17:27:40,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:27:40,819 INFO L225 Difference]: With dead ends: 600 [2021-12-06 17:27:40,819 INFO L226 Difference]: Without dead ends: 600 [2021-12-06 17:27:40,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 183 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=66, Invalid=168, Unknown=6, NotChecked=0, Total=240 [2021-12-06 17:27:40,819 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 65 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:27:40,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 297 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 140 Unchecked, 0.1s Time] [2021-12-06 17:27:40,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-12-06 17:27:40,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 572. [2021-12-06 17:27:40,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 524 states have (on average 1.2251908396946565) internal successors, (642), 552 states have internal predecessors, (642), 7 states have call successors, (7), 3 states have call predecessors, (7), 10 states have return successors, (32), 16 states have call predecessors, (32), 7 states have call successors, (32) [2021-12-06 17:27:40,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 681 transitions. [2021-12-06 17:27:40,827 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 681 transitions. Word has length 67 [2021-12-06 17:27:40,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:27:40,828 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 681 transitions. [2021-12-06 17:27:40,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:27:40,828 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 681 transitions. [2021-12-06 17:27:40,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 17:27:40,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:27:40,828 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:27:40,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (92)] Ended with exit code 0 [2021-12-06 17:27:41,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (93)] Ended with exit code 0 [2021-12-06 17:27:41,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 17:27:41,229 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:27:41,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:27:41,231 INFO L85 PathProgramCache]: Analyzing trace with hash -747494556, now seen corresponding path program 1 times [2021-12-06 17:27:41,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:27:41,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548214052] [2021-12-06 17:27:41,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:27:41,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:27:41,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:27:41,235 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:27:41,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-12-06 17:27:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:42,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 17:27:42,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:27:42,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:27:42,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:27:49,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:27:49,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:27:49,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:27:49,821 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-12-06 17:27:49,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2021-12-06 17:27:49,864 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 17:27:49,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2021-12-06 17:27:49,966 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 17:27:49,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:27:50,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 17:27:50,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548214052] [2021-12-06 17:27:50,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548214052] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:27:50,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1547238564] [2021-12-06 17:27:50,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:27:50,390 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 17:27:50,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 17:27:50,391 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 17:27:50,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (95)] Waiting until timeout for monitored process [2021-12-06 17:27:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:51,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 17:27:51,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:27:51,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:27:51,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:27:55,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:27:55,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:27:55,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:27:55,221 INFO L354 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2021-12-06 17:27:55,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2021-12-06 17:27:55,259 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 17:27:55,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 47 [2021-12-06 17:27:55,320 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 17:27:55,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:27:55,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1547238564] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:27:55,761 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:27:55,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-12-06 17:27:55,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916870436] [2021-12-06 17:27:55,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:27:55,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:27:55,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 17:27:55,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:27:55,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=85, Unknown=1, NotChecked=0, Total=110 [2021-12-06 17:27:55,762 INFO L87 Difference]: Start difference. First operand 572 states and 681 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:27:56,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:27:56,134 INFO L93 Difference]: Finished difference Result 658 states and 780 transitions. [2021-12-06 17:27:56,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:27:56,135 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2021-12-06 17:27:56,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:27:56,137 INFO L225 Difference]: With dead ends: 658 [2021-12-06 17:27:56,137 INFO L226 Difference]: Without dead ends: 658 [2021-12-06 17:27:56,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=24, Invalid=85, Unknown=1, NotChecked=0, Total=110 [2021-12-06 17:27:56,138 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 57 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 283 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:27:56,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 606 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 161 Invalid, 0 Unknown, 283 Unchecked, 0.4s Time] [2021-12-06 17:27:56,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-12-06 17:27:56,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 572. [2021-12-06 17:27:56,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 524 states have (on average 1.2251908396946565) internal successors, (642), 552 states have internal predecessors, (642), 7 states have call successors, (7), 3 states have call predecessors, (7), 10 states have return successors, (32), 16 states have call predecessors, (32), 7 states have call successors, (32) [2021-12-06 17:27:56,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 681 transitions. [2021-12-06 17:27:56,145 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 681 transitions. Word has length 67 [2021-12-06 17:27:56,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:27:56,145 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 681 transitions. [2021-12-06 17:27:56,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:27:56,145 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 681 transitions. [2021-12-06 17:27:56,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 17:27:56,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:27:56,146 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:27:56,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (94)] Ended with exit code 0 [2021-12-06 17:27:56,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (95)] Forceful destruction successful, exit code 0 [2021-12-06 17:27:56,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 17:27:56,547 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE === [create_dataErr0REQUIRES_VIOLATION, create_dataErr1REQUIRES_VIOLATION, create_dataErr2REQUIRES_VIOLATION, create_dataErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-06 17:27:56,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:27:56,548 INFO L85 PathProgramCache]: Analyzing trace with hash 803066894, now seen corresponding path program 1 times [2021-12-06 17:27:56,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 17:27:56,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138574229] [2021-12-06 17:27:56,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:27:56,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 17:27:56,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 17:27:56,552 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 17:27:56,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13eccaa5-ee5b-4472-907b-6a323655ba6f/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-12-06 17:27:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:27:57,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-06 17:27:57,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:27:57,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:27:57,531 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 17:27:57,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-12-06 17:27:57,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:27:57,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 17:27:57,906 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 17:27:57,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 44 [2021-12-06 17:27:57,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:27:57,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 17:27:58,028 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 17:27:58,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 42 [2021-12-06 17:27:58,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:27:58,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 17:27:58,097 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 26 treesize of output 14 [2021-12-06 17:27:58,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:27:58,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 17:28:00,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 17:28:00,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 49 [2021-12-06 17:28:00,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:28:00,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 17:28:02,587 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-12-06 17:28:02,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 66 [2021-12-06 17:28:02,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:28:02,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 17:28:02,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2021-12-06 17:28:02,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2021-12-06 17:28:03,374 INFO L354 Elim1Store]: treesize reduction 29, result has 9.4 percent of original size [2021-12-06 17:28:03,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 47 [2021-12-06 17:28:03,703 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 17:28:03,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 27 [2021-12-06 17:28:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 17:28:03,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:28:04,516 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:28:04,516 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 6534 treesize of output 6167