./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:35:03,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:35:03,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:35:03,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:35:03,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:35:03,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:35:03,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:35:03,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:35:03,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:35:03,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:35:03,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:35:03,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:35:03,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:35:03,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:35:03,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:35:03,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:35:03,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:35:03,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:35:03,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:35:03,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:35:03,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:35:03,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:35:03,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:35:03,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:35:03,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:35:03,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:35:03,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:35:03,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:35:03,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:35:03,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:35:03,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:35:03,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:35:03,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:35:03,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:35:03,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:35:03,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:35:03,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:35:03,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:35:03,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:35:03,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:35:03,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:35:03,185 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-11-23 13:35:03,234 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:35:03,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:35:03,242 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:35:03,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:35:03,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:35:03,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:35:03,252 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:35:03,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:35:03,253 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:35:03,253 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:35:03,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:35:03,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:35:03,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:35:03,253 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 13:35:03,254 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 13:35:03,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:35:03,254 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 13:35:03,254 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:35:03,254 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:35:03,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:35:03,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:35:03,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:35:03,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:35:03,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:35:03,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:35:03,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:35:03,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:35:03,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:35:03,256 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_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 [2021-11-23 13:35:03,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:35:03,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:35:03,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:35:03,625 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:35:03,626 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:35:03,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2021-11-23 13:35:03,713 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/data/92805d701/ac1e902c57ab4cfa8baebfdffa8001d1/FLAG6258af270 [2021-11-23 13:35:04,504 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:35:04,504 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2021-11-23 13:35:04,541 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/data/92805d701/ac1e902c57ab4cfa8baebfdffa8001d1/FLAG6258af270 [2021-11-23 13:35:04,693 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/data/92805d701/ac1e902c57ab4cfa8baebfdffa8001d1 [2021-11-23 13:35:04,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:35:04,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:35:04,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:35:04,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:35:04,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:35:04,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:35:04" (1/1) ... [2021-11-23 13:35:04,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d832fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:04, skipping insertion in model container [2021-11-23 13:35:04,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:35:04" (1/1) ... [2021-11-23 13:35:04,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:35:04,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:35:05,334 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2021-11-23 13:35:05,353 WARN L564 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-23 13:35:05,354 WARN L564 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-23 13:35:05,355 WARN L564 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-23 13:35:05,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:35:05,398 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-23 13:35:05,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e270d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:05, skipping insertion in model container [2021-11-23 13:35:05,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:35:05,399 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 13:35:05,402 INFO L158 Benchmark]: Toolchain (without parser) took 703.11ms. Allocated memory is still 104.9MB. Free memory was 63.9MB in the beginning and 75.5MB in the end (delta: -11.6MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2021-11-23 13:35:05,402 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 104.9MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:35:05,403 INFO L158 Benchmark]: CACSL2BoogieTranslator took 680.01ms. Allocated memory is still 104.9MB. Free memory was 63.8MB in the beginning and 75.5MB in the end (delta: -11.8MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2021-11-23 13:35:05,405 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 104.9MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 680.01ms. Allocated memory is still 104.9MB. Free memory was 63.8MB in the beginning and 75.5MB in the end (delta: -11.8MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 860]: 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_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:35:08,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:35:08,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:35:08,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:35:08,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:35:08,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:35:08,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:35:08,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:35:08,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:35:08,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:35:08,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:35:08,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:35:08,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:35:08,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:35:08,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:35:08,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:35:08,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:35:08,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:35:08,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:35:08,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:35:08,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:35:08,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:35:08,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:35:08,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:35:08,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:35:08,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:35:08,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:35:08,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:35:08,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:35:08,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:35:08,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:35:08,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:35:08,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:35:08,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:35:08,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:35:08,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:35:08,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:35:08,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:35:08,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:35:08,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:35:08,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:35:08,403 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2021-11-23 13:35:08,465 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:35:08,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:35:08,468 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:35:08,468 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:35:08,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:35:08,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:35:08,472 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:35:08,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:35:08,473 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:35:08,473 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:35:08,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:35:08,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:35:08,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:35:08,475 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 13:35:08,476 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 13:35:08,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:35:08,476 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 13:35:08,477 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 13:35:08,477 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 13:35:08,477 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:35:08,477 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:35:08,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:35:08,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:35:08,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:35:08,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:35:08,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:35:08,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:35:08,480 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 13:35:08,480 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 13:35:08,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:35:08,481 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 13:35:08,481 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_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 [2021-11-23 13:35:08,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:35:08,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:35:08,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:35:08,978 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:35:08,979 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:35:08,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2021-11-23 13:35:09,091 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/data/5e8095f7f/6727334bdaab49898d0fc5aacd05c94b/FLAG1a54e1ce8 [2021-11-23 13:35:09,957 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:35:09,958 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2021-11-23 13:35:09,984 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/data/5e8095f7f/6727334bdaab49898d0fc5aacd05c94b/FLAG1a54e1ce8 [2021-11-23 13:35:10,149 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/data/5e8095f7f/6727334bdaab49898d0fc5aacd05c94b [2021-11-23 13:35:10,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:35:10,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:35:10,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:35:10,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:35:10,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:35:10,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:35:10" (1/1) ... [2021-11-23 13:35:10,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bd8408d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:10, skipping insertion in model container [2021-11-23 13:35:10,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:35:10" (1/1) ... [2021-11-23 13:35:10,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:35:10,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:35:10,785 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2021-11-23 13:35:10,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:35:10,855 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 13:35:10,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:35:10,904 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2021-11-23 13:35:10,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:35:10,939 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:35:10,986 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2021-11-23 13:35:11,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:35:11,091 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:35:11,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:11 WrapperNode [2021-11-23 13:35:11,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:35:11,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:35:11,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:35:11,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:35:11,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:11" (1/1) ... [2021-11-23 13:35:11,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:11" (1/1) ... [2021-11-23 13:35:11,180 INFO L137 Inliner]: procedures = 235, calls = 75, calls flagged for inlining = 33, calls inlined = 51, statements flattened = 548 [2021-11-23 13:35:11,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:35:11,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:35:11,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:35:11,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:35:11,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:11" (1/1) ... [2021-11-23 13:35:11,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:11" (1/1) ... [2021-11-23 13:35:11,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:11" (1/1) ... [2021-11-23 13:35:11,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:11" (1/1) ... [2021-11-23 13:35:11,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:11" (1/1) ... [2021-11-23 13:35:11,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:11" (1/1) ... [2021-11-23 13:35:11,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:11" (1/1) ... [2021-11-23 13:35:11,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:35:11,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:35:11,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:35:11,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:35:11,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:11" (1/1) ... [2021-11-23 13:35:11,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:35:11,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:11,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:11,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:35:11,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 13:35:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:35:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:35:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 13:35:11,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 13:35:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 13:35:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:35:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:35:11,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:35:11,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:35:11,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:35:11,648 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:35:11,665 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:35:13,093 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:35:13,114 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:35:13,115 INFO L301 CfgBuilder]: Removed 76 assume(true) statements. [2021-11-23 13:35:13,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:35:13 BoogieIcfgContainer [2021-11-23 13:35:13,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:35:13,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:35:13,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:35:13,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:35:13,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:35:10" (1/3) ... [2021-11-23 13:35:13,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae75963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:35:13, skipping insertion in model container [2021-11-23 13:35:13,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:11" (2/3) ... [2021-11-23 13:35:13,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae75963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:35:13, skipping insertion in model container [2021-11-23 13:35:13,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:35:13" (3/3) ... [2021-11-23 13:35:13,130 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-2.i [2021-11-23 13:35:13,137 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:35:13,137 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 146 error locations. [2021-11-23 13:35:13,195 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:35:13,204 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:35:13,205 INFO L340 AbstractCegarLoop]: Starting to check reachability of 146 error locations. [2021-11-23 13:35:13,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 390 states, 243 states have (on average 2.0864197530864197) internal successors, (507), 389 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:13,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 13:35:13,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:13,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 13:35:13,248 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 142 more)] === [2021-11-23 13:35:13,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:13,254 INFO L85 PathProgramCache]: Analyzing trace with hash 28694792, now seen corresponding path program 1 times [2021-11-23 13:35:13,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:35:13,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673812046] [2021-11-23 13:35:13,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:13,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:35:13,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:35:13,286 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:35:13,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 13:35:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:13,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 13:35:13,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:13,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:13,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:13,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:13,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:35:13,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673812046] [2021-11-23 13:35:13,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673812046] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:13,486 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:13,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 13:35:13,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704078999] [2021-11-23 13:35:13,489 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:13,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 13:35:13,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:35:13,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 13:35:13,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:35:13,535 INFO L87 Difference]: Start difference. First operand has 390 states, 243 states have (on average 2.0864197530864197) internal successors, (507), 389 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:13,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:13,576 INFO L93 Difference]: Finished difference Result 348 states and 354 transitions. [2021-11-23 13:35:13,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 13:35:13,579 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2021-11-23 13:35:13,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:13,595 INFO L225 Difference]: With dead ends: 348 [2021-11-23 13:35:13,596 INFO L226 Difference]: Without dead ends: 346 [2021-11-23 13:35:13,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:35:13,603 INFO L933 BasicCegarLoop]: 354 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, 354 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 [2021-11-23 13:35:13,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:35:13,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-11-23 13:35:13,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2021-11-23 13:35:13,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 204 states have (on average 1.7254901960784315) internal successors, (352), 345 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:13,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 352 transitions. [2021-11-23 13:35:13,694 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 352 transitions. Word has length 5 [2021-11-23 13:35:13,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:13,696 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 352 transitions. [2021-11-23 13:35:13,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:13,697 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 352 transitions. [2021-11-23 13:35:13,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 13:35:13,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:13,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 13:35:13,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:13,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:35:13,912 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 142 more)] === [2021-11-23 13:35:13,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:13,913 INFO L85 PathProgramCache]: Analyzing trace with hash 28694854, now seen corresponding path program 1 times [2021-11-23 13:35:13,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:35:13,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243767066] [2021-11-23 13:35:13,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:13,915 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:35:13,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:35:13,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:35:13,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 13:35:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:14,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:35:14,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:14,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:35:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:14,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:14,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:14,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:35:14,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243767066] [2021-11-23 13:35:14,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243767066] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:14,096 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:14,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 13:35:14,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613605962] [2021-11-23 13:35:14,097 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:14,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:35:14,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:35:14,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:35:14,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:35:14,101 INFO L87 Difference]: Start difference. First operand 346 states and 352 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) [2021-11-23 13:35:14,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:14,708 INFO L93 Difference]: Finished difference Result 365 states and 371 transitions. [2021-11-23 13:35:14,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:35:14,709 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 [2021-11-23 13:35:14,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:14,713 INFO L225 Difference]: With dead ends: 365 [2021-11-23 13:35:14,713 INFO L226 Difference]: Without dead ends: 365 [2021-11-23 13:35:14,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:35:14,716 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 344 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:14,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 248 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 13:35:14,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-23 13:35:14,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 343. [2021-11-23 13:35:14,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 204 states have (on average 1.7107843137254901) internal successors, (349), 342 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:14,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 349 transitions. [2021-11-23 13:35:14,765 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 349 transitions. Word has length 5 [2021-11-23 13:35:14,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:14,765 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 349 transitions. [2021-11-23 13:35:14,766 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) [2021-11-23 13:35:14,767 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 349 transitions. [2021-11-23 13:35:14,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 13:35:14,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:14,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 13:35:14,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:14,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:35:14,982 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 142 more)] === [2021-11-23 13:35:14,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:14,983 INFO L85 PathProgramCache]: Analyzing trace with hash 28694855, now seen corresponding path program 1 times [2021-11-23 13:35:14,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:35:14,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33698166] [2021-11-23 13:35:14,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:14,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:35:14,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:35:14,986 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:35:15,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 13:35:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:15,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:35:15,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:15,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:35:15,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:15,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:15,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:15,234 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:35:15,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33698166] [2021-11-23 13:35:15,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33698166] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:15,235 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:15,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 13:35:15,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527099321] [2021-11-23 13:35:15,239 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:15,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:35:15,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:35:15,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:35:15,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:35:15,241 INFO L87 Difference]: Start difference. First operand 343 states and 349 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:15,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:15,717 INFO L93 Difference]: Finished difference Result 341 states and 347 transitions. [2021-11-23 13:35:15,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:35:15,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-23 13:35:15,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:15,719 INFO L225 Difference]: With dead ends: 341 [2021-11-23 13:35:15,720 INFO L226 Difference]: Without dead ends: 341 [2021-11-23 13:35:15,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:35:15,721 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 342 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:15,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 241 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 13:35:15,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-11-23 13:35:15,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 340. [2021-11-23 13:35:15,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 204 states have (on average 1.696078431372549) internal successors, (346), 339 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:15,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 346 transitions. [2021-11-23 13:35:15,734 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 346 transitions. Word has length 5 [2021-11-23 13:35:15,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:15,735 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 346 transitions. [2021-11-23 13:35:15,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:15,735 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 346 transitions. [2021-11-23 13:35:15,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 13:35:15,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:15,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:15,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:15,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:35:15,947 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 142 more)] === [2021-11-23 13:35:15,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:15,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1805950471, now seen corresponding path program 1 times [2021-11-23 13:35:15,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:35:15,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145850485] [2021-11-23 13:35:15,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:15,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:35:15,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:35:15,950 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:35:15,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 13:35:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:16,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:35:16,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:16,122 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 13:35:16,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 13:35:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:16,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:16,239 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:35:16,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145850485] [2021-11-23 13:35:16,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145850485] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:16,245 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:16,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-11-23 13:35:16,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4996815] [2021-11-23 13:35:16,245 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:16,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:35:16,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:35:16,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:35:16,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:35:16,248 INFO L87 Difference]: Start difference. First operand 340 states and 346 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:16,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:16,894 INFO L93 Difference]: Finished difference Result 533 states and 543 transitions. [2021-11-23 13:35:16,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:35:16,895 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 [2021-11-23 13:35:16,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:16,897 INFO L225 Difference]: With dead ends: 533 [2021-11-23 13:35:16,897 INFO L226 Difference]: Without dead ends: 533 [2021-11-23 13:35:16,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:35:16,899 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 1036 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:16,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 376 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 13:35:16,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-11-23 13:35:16,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 338. [2021-11-23 13:35:16,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 205 states have (on average 1.6829268292682926) internal successors, (345), 337 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 345 transitions. [2021-11-23 13:35:16,915 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 345 transitions. Word has length 7 [2021-11-23 13:35:16,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:16,915 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 345 transitions. [2021-11-23 13:35:16,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:16,917 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 345 transitions. [2021-11-23 13:35:16,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 13:35:16,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:16,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:16,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:17,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:35:17,131 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 142 more)] === [2021-11-23 13:35:17,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:17,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1805950472, now seen corresponding path program 1 times [2021-11-23 13:35:17,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:35:17,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158043739] [2021-11-23 13:35:17,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:17,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:35:17,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:35:17,135 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:35:17,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 13:35:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:17,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:35:17,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:17,319 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 13:35:17,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-23 13:35:17,327 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 13:35:17,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 13:35:17,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:17,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:21,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:21,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:35:21,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158043739] [2021-11-23 13:35:21,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158043739] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:21,819 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:21,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-23 13:35:21,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186728752] [2021-11-23 13:35:21,819 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:21,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:35:21,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:35:21,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:35:21,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-11-23 13:35:21,821 INFO L87 Difference]: Start difference. First operand 338 states and 345 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:22,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:22,862 INFO L93 Difference]: Finished difference Result 343 states and 349 transitions. [2021-11-23 13:35:22,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:35:22,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 [2021-11-23 13:35:22,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:22,865 INFO L225 Difference]: With dead ends: 343 [2021-11-23 13:35:22,865 INFO L226 Difference]: Without dead ends: 343 [2021-11-23 13:35:22,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=24, Invalid=47, Unknown=1, NotChecked=0, Total=72 [2021-11-23 13:35:22,867 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 195 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 279 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:22,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 1227 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 208 Invalid, 0 Unknown, 279 Unchecked, 1.0s Time] [2021-11-23 13:35:22,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-11-23 13:35:22,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2021-11-23 13:35:22,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 212 states have (on average 1.6462264150943395) internal successors, (349), 342 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:22,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 349 transitions. [2021-11-23 13:35:22,876 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 349 transitions. Word has length 7 [2021-11-23 13:35:22,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:22,876 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 349 transitions. [2021-11-23 13:35:22,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:22,877 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 349 transitions. [2021-11-23 13:35:22,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 13:35:22,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:22,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:22,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-23 13:35:23,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:35:23,089 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 142 more)] === [2021-11-23 13:35:23,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:23,090 INFO L85 PathProgramCache]: Analyzing trace with hash 351614728, now seen corresponding path program 1 times [2021-11-23 13:35:23,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:35:23,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015896617] [2021-11-23 13:35:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:23,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:35:23,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:35:23,092 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:35:23,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 13:35:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:23,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 13:35:23,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:23,302 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-23 13:35:23,302 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 21 treesize of output 19 [2021-11-23 13:35:23,428 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-23 13:35:23,428 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 4 case distinctions, treesize of input 60 treesize of output 15 [2021-11-23 13:35:23,497 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 [2021-11-23 13:35:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:23,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:23,642 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-23 13:35:23,642 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 24 treesize of output 23 [2021-11-23 13:35:25,779 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_gl_insert_~node~1#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base|) |ULTIMATE.start_gl_insert_~node~1#1.offset| v_DerPreprocessor_1) (bvadd |ULTIMATE.start_gl_insert_~node~1#1.offset| (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~1#1.offset|) v_DerPreprocessor_3) (bvadd (_ bv3 32) |ULTIMATE.start_gl_insert_~node~1#1.offset|) v_DerPreprocessor_4)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) |c_~#gl_list~0.base|)) is different from false [2021-11-23 13:35:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:32,412 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:35:32,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015896617] [2021-11-23 13:35:32,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015896617] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:32,413 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:32,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-23 13:35:32,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989302879] [2021-11-23 13:35:32,413 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:32,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 13:35:32,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:35:32,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 13:35:32,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=4, NotChecked=22, Total=182 [2021-11-23 13:35:32,415 INFO L87 Difference]: Start difference. First operand 343 states and 349 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:40,627 WARN L227 SmtUtils]: Spent 8.16s on a formula simplification. DAG size of input: 43 DAG size of output: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:35:43,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:43,722 INFO L93 Difference]: Finished difference Result 678 states and 690 transitions. [2021-11-23 13:35:43,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:35:43,723 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 13:35:43,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:43,728 INFO L225 Difference]: With dead ends: 678 [2021-11-23 13:35:43,728 INFO L226 Difference]: Without dead ends: 678 [2021-11-23 13:35:43,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=4, NotChecked=32, Total=342 [2021-11-23 13:35:43,730 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 675 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 899 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:43,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 1868 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 830 Invalid, 0 Unknown, 899 Unchecked, 2.8s Time] [2021-11-23 13:35:43,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-11-23 13:35:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 345. [2021-11-23 13:35:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 214 states have (on average 1.644859813084112) internal successors, (352), 344 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:43,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 352 transitions. [2021-11-23 13:35:43,747 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 352 transitions. Word has length 9 [2021-11-23 13:35:43,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:43,747 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 352 transitions. [2021-11-23 13:35:43,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:43,748 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 352 transitions. [2021-11-23 13:35:43,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 13:35:43,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:43,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:43,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:43,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:35:43,956 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 142 more)] === [2021-11-23 13:35:43,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:43,956 INFO L85 PathProgramCache]: Analyzing trace with hash 351614729, now seen corresponding path program 1 times [2021-11-23 13:35:43,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:35:43,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441099717] [2021-11-23 13:35:43,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:43,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:35:43,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:35:43,959 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:35:43,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 13:35:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:44,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 13:35:44,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:44,296 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:35:44,300 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 15 treesize of output 15 [2021-11-23 13:35:44,323 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 [2021-11-23 13:35:44,688 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-23 13:35:44,689 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 4 case distinctions, treesize of input 116 treesize of output 71 [2021-11-23 13:35:44,816 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-11-23 13:35:44,816 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 4 case distinctions, treesize of input 68 treesize of output 23 [2021-11-23 13:35:45,064 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 [2021-11-23 13:35:45,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 13:35:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:45,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:16,485 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_gl_insert_~node~1#1.base_20| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_20|))))))) (and (forall ((|ULTIMATE.start_gl_insert_~node~1#1.offset| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~1#1.base_20| (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~1#1.base_20|) |ULTIMATE.start_gl_insert_~node~1#1.offset| v_DerPreprocessor_9) (bvadd |ULTIMATE.start_gl_insert_~node~1#1.offset| (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~1#1.offset|) v_DerPreprocessor_11) (bvadd (_ bv3 32) |ULTIMATE.start_gl_insert_~node~1#1.offset|) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_gl_insert_~node~1#1.offset| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse1 (bvadd |ULTIMATE.start_gl_insert_~node~1#1.offset| (_ bv1 32))) (.cse2 (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~1#1.offset|)) (.cse3 (bvadd (_ bv3 32) |ULTIMATE.start_gl_insert_~node~1#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~1#1.base_20| (store (store (store (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~1#1.base_20|) |ULTIMATE.start_gl_insert_~node~1#1.offset| v_DerPreprocessor_9) .cse1 v_DerPreprocessor_10) .cse2 v_DerPreprocessor_11) .cse3 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv8 32)) (select (store |c_#length| |v_ULTIMATE.start_gl_insert_~node~1#1.base_20| (_ bv20 32)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_20| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_20|) |ULTIMATE.start_gl_insert_~node~1#1.offset| v_DerPreprocessor_5) .cse1 v_DerPreprocessor_6) .cse2 v_DerPreprocessor_7) .cse3 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))))) is different from false [2021-11-23 13:36:16,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:16,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:16,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441099717] [2021-11-23 13:36:16,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441099717] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:16,728 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:16,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [] total 13 [2021-11-23 13:36:16,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188028874] [2021-11-23 13:36:16,729 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:16,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 13:36:16,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:16,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 13:36:16,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=138, Unknown=10, NotChecked=24, Total=210 [2021-11-23 13:36:16,731 INFO L87 Difference]: Start difference. First operand 345 states and 352 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:21,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:21,952 INFO L93 Difference]: Finished difference Result 521 states and 531 transitions. [2021-11-23 13:36:21,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:36:21,954 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 13:36:21,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:21,958 INFO L225 Difference]: With dead ends: 521 [2021-11-23 13:36:21,959 INFO L226 Difference]: Without dead ends: 521 [2021-11-23 13:36:21,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 30.9s TimeCoverageRelationStatistics Valid=52, Invalid=182, Unknown=10, NotChecked=28, Total=272 [2021-11-23 13:36:21,961 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 195 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 517 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:21,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 2262 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 653 Invalid, 0 Unknown, 517 Unchecked, 4.8s Time] [2021-11-23 13:36:21,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-11-23 13:36:21,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 345. [2021-11-23 13:36:21,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 214 states have (on average 1.6401869158878504) internal successors, (351), 344 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:21,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 351 transitions. [2021-11-23 13:36:21,976 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 351 transitions. Word has length 9 [2021-11-23 13:36:21,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:21,977 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 351 transitions. [2021-11-23 13:36:21,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:21,978 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 351 transitions. [2021-11-23 13:36:21,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 13:36:21,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:21,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:21,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:22,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:22,196 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 142 more)] === [2021-11-23 13:36:22,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:22,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1984845326, now seen corresponding path program 1 times [2021-11-23 13:36:22,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:22,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237816540] [2021-11-23 13:36:22,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:22,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:22,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:22,200 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:22,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 13:36:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:22,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:36:22,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:22,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:36:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:22,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:22,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:22,454 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:22,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237816540] [2021-11-23 13:36:22,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237816540] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:22,455 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:22,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:36:22,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268910353] [2021-11-23 13:36:22,456 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:22,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:36:22,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:22,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:36:22,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:36:22,457 INFO L87 Difference]: Start difference. First operand 345 states and 351 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2021-11-23 13:36:23,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:23,596 INFO L93 Difference]: Finished difference Result 528 states and 538 transitions. [2021-11-23 13:36:23,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:36:23,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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 [2021-11-23 13:36:23,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:23,601 INFO L225 Difference]: With dead ends: 528 [2021-11-23 13:36:23,601 INFO L226 Difference]: Without dead ends: 528 [2021-11-23 13:36:23,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:36:23,602 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1312 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:23,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 390 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 13:36:23,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-23 13:36:23,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 342. [2021-11-23 13:36:23,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 214 states have (on average 1.6261682242990654) internal successors, (348), 341 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 348 transitions. [2021-11-23 13:36:23,617 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 348 transitions. Word has length 10 [2021-11-23 13:36:23,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:23,618 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 348 transitions. [2021-11-23 13:36:23,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2021-11-23 13:36:23,618 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 348 transitions. [2021-11-23 13:36:23,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 13:36:23,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:23,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:23,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-23 13:36:23,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:23,834 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 142 more)] === [2021-11-23 13:36:23,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:23,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1984845325, now seen corresponding path program 1 times [2021-11-23 13:36:23,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:23,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200220401] [2021-11-23 13:36:23,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:23,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:23,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:23,838 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:23,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 13:36:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:23,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:36:23,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:23,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:36:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:24,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:24,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:24,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200220401] [2021-11-23 13:36:24,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200220401] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:24,429 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:24,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 13:36:24,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363534932] [2021-11-23 13:36:24,429 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:24,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:36:24,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:24,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:36:24,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:36:24,431 INFO L87 Difference]: Start difference. First operand 342 states and 348 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:26,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:26,646 INFO L93 Difference]: Finished difference Result 516 states and 526 transitions. [2021-11-23 13:36:26,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:36:26,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 13:36:26,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:26,652 INFO L225 Difference]: With dead ends: 516 [2021-11-23 13:36:26,652 INFO L226 Difference]: Without dead ends: 516 [2021-11-23 13:36:26,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:36:26,654 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 1833 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:26,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1833 Valid, 634 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 13:36:26,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-11-23 13:36:26,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 340. [2021-11-23 13:36:26,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 214 states have (on average 1.6168224299065421) internal successors, (346), 339 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:26,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 346 transitions. [2021-11-23 13:36:26,668 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 346 transitions. Word has length 10 [2021-11-23 13:36:26,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:26,669 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 346 transitions. [2021-11-23 13:36:26,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:26,669 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 346 transitions. [2021-11-23 13:36:26,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 13:36:26,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:26,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:26,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-23 13:36:26,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:26,884 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 142 more)] === [2021-11-23 13:36:26,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:26,884 INFO L85 PathProgramCache]: Analyzing trace with hash -470878954, now seen corresponding path program 1 times [2021-11-23 13:36:26,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:26,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689678677] [2021-11-23 13:36:26,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:26,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:26,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:26,886 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:26,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 13:36:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:26,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:36:26,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:27,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:27,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-23 13:36:27,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:27,576 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:27,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689678677] [2021-11-23 13:36:27,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689678677] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:27,576 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:27,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-23 13:36:27,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524703607] [2021-11-23 13:36:27,577 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:27,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:36:27,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:27,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:36:27,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:36:27,579 INFO L87 Difference]: Start difference. First operand 340 states and 346 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:29,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:29,822 INFO L93 Difference]: Finished difference Result 514 states and 524 transitions. [2021-11-23 13:36:29,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:36:29,825 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-23 13:36:29,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:29,830 INFO L225 Difference]: With dead ends: 514 [2021-11-23 13:36:29,830 INFO L226 Difference]: Without dead ends: 514 [2021-11-23 13:36:29,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-11-23 13:36:29,832 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 3133 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3133 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:29,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3133 Valid, 488 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 13:36:29,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-11-23 13:36:29,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 338. [2021-11-23 13:36:29,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 214 states have (on average 1.6074766355140186) internal successors, (344), 337 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:29,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 344 transitions. [2021-11-23 13:36:29,849 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 344 transitions. Word has length 12 [2021-11-23 13:36:29,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:29,850 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 344 transitions. [2021-11-23 13:36:29,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:29,851 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 344 transitions. [2021-11-23 13:36:29,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 13:36:29,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:29,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:29,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:30,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:30,068 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 142 more)] === [2021-11-23 13:36:30,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:30,069 INFO L85 PathProgramCache]: Analyzing trace with hash -470878955, now seen corresponding path program 1 times [2021-11-23 13:36:30,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:30,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423025244] [2021-11-23 13:36:30,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:30,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:30,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:30,072 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:30,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 13:36:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:30,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:36:30,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:30,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:30,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:30,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:30,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423025244] [2021-11-23 13:36:30,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423025244] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:30,305 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:30,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:36:30,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19557863] [2021-11-23 13:36:30,305 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:30,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:36:30,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:30,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:36:30,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:36:30,307 INFO L87 Difference]: Start difference. First operand 338 states and 344 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:30,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:30,938 INFO L93 Difference]: Finished difference Result 352 states and 358 transitions. [2021-11-23 13:36:30,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:36:30,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-23 13:36:30,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:30,943 INFO L225 Difference]: With dead ends: 352 [2021-11-23 13:36:30,943 INFO L226 Difference]: Without dead ends: 352 [2021-11-23 13:36:30,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:36:30,944 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 641 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:30,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [641 Valid, 258 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 13:36:30,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-11-23 13:36:30,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 336. [2021-11-23 13:36:30,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 214 states have (on average 1.5981308411214954) internal successors, (342), 335 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:30,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 342 transitions. [2021-11-23 13:36:30,957 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 342 transitions. Word has length 12 [2021-11-23 13:36:30,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:30,957 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 342 transitions. [2021-11-23 13:36:30,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:30,958 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 342 transitions. [2021-11-23 13:36:30,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 13:36:30,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:30,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:30,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:31,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:31,189 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 142 more)] === [2021-11-23 13:36:31,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:31,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1823733946, now seen corresponding path program 1 times [2021-11-23 13:36:31,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:31,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202293502] [2021-11-23 13:36:31,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:31,191 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:31,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:31,192 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:31,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 13:36:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:31,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:36:31,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:31,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:31,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:31,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:31,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202293502] [2021-11-23 13:36:31,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202293502] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:31,584 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:31,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 13:36:31,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415499342] [2021-11-23 13:36:31,584 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:31,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:36:31,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:31,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:36:31,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:36:31,586 INFO L87 Difference]: Start difference. First operand 336 states and 342 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:32,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:32,259 INFO L93 Difference]: Finished difference Result 332 states and 338 transitions. [2021-11-23 13:36:32,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:36:32,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-23 13:36:32,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:32,263 INFO L225 Difference]: With dead ends: 332 [2021-11-23 13:36:32,263 INFO L226 Difference]: Without dead ends: 332 [2021-11-23 13:36:32,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:36:32,265 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 347 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:32,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 716 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 13:36:32,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-11-23 13:36:32,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2021-11-23 13:36:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 212 states have (on average 1.5943396226415094) internal successors, (338), 331 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:32,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 338 transitions. [2021-11-23 13:36:32,281 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 338 transitions. Word has length 22 [2021-11-23 13:36:32,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:32,282 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 338 transitions. [2021-11-23 13:36:32,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:32,282 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 338 transitions. [2021-11-23 13:36:32,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 13:36:32,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:32,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:32,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:32,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:32,492 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 142 more)] === [2021-11-23 13:36:32,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:32,492 INFO L85 PathProgramCache]: Analyzing trace with hash -701170383, now seen corresponding path program 1 times [2021-11-23 13:36:32,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:32,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409871597] [2021-11-23 13:36:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:32,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:32,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:32,495 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:32,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 13:36:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:32,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:36:32,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:32,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:32,926 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-23 13:36:32,926 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 17 [2021-11-23 13:36:32,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:32,943 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:32,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409871597] [2021-11-23 13:36:32,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409871597] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:32,944 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:32,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 13:36:32,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224934338] [2021-11-23 13:36:32,944 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:32,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:36:32,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:32,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:36:32,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:36:32,946 INFO L87 Difference]: Start difference. First operand 332 states and 338 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:34,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:34,233 INFO L93 Difference]: Finished difference Result 487 states and 497 transitions. [2021-11-23 13:36:34,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:36:34,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-23 13:36:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:34,247 INFO L225 Difference]: With dead ends: 487 [2021-11-23 13:36:34,247 INFO L226 Difference]: Without dead ends: 487 [2021-11-23 13:36:34,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:36:34,249 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 1029 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:34,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1029 Valid, 333 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 13:36:34,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-11-23 13:36:34,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 322. [2021-11-23 13:36:34,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 212 states have (on average 1.5471698113207548) internal successors, (328), 321 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:34,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 328 transitions. [2021-11-23 13:36:34,263 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 328 transitions. Word has length 23 [2021-11-23 13:36:34,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:34,263 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 328 transitions. [2021-11-23 13:36:34,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:34,278 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 328 transitions. [2021-11-23 13:36:34,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 13:36:34,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:34,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:34,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:34,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:34,481 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 142 more)] === [2021-11-23 13:36:34,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:34,481 INFO L85 PathProgramCache]: Analyzing trace with hash -701170382, now seen corresponding path program 1 times [2021-11-23 13:36:34,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:34,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115326212] [2021-11-23 13:36:34,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:34,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:34,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:34,484 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:34,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 13:36:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:34,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:36:34,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:34,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:34,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:35,372 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:36:35,372 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 26 [2021-11-23 13:36:35,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:35,670 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:35,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115326212] [2021-11-23 13:36:35,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115326212] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:35,670 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:35,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-23 13:36:35,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90294035] [2021-11-23 13:36:35,671 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:35,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:36:35,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:35,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:36:35,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:36:35,672 INFO L87 Difference]: Start difference. First operand 322 states and 328 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:37,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:37,517 INFO L93 Difference]: Finished difference Result 479 states and 489 transitions. [2021-11-23 13:36:37,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:36:37,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-23 13:36:37,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:37,520 INFO L225 Difference]: With dead ends: 479 [2021-11-23 13:36:37,520 INFO L226 Difference]: Without dead ends: 479 [2021-11-23 13:36:37,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:36:37,521 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 1013 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:37,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1013 Valid, 590 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-23 13:36:37,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-11-23 13:36:37,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 314. [2021-11-23 13:36:37,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 210 states have (on average 1.5238095238095237) internal successors, (320), 313 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:37,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 320 transitions. [2021-11-23 13:36:37,530 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 320 transitions. Word has length 23 [2021-11-23 13:36:37,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:37,530 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 320 transitions. [2021-11-23 13:36:37,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:37,531 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 320 transitions. [2021-11-23 13:36:37,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 13:36:37,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:37,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:37,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:37,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:37,743 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 142 more)] === [2021-11-23 13:36:37,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:37,744 INFO L85 PathProgramCache]: Analyzing trace with hash 485129426, now seen corresponding path program 1 times [2021-11-23 13:36:37,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:37,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830287798] [2021-11-23 13:36:37,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:37,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:37,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:37,746 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:37,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 13:36:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:37,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 13:36:37,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:37,998 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:36:37,999 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 [2021-11-23 13:36:38,270 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 [2021-11-23 13:36:38,337 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 [2021-11-23 13:36:38,428 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-11-23 13:36:38,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 27 [2021-11-23 13:36:38,639 INFO L354 Elim1Store]: treesize reduction 29, result has 9.4 percent of original size [2021-11-23 13:36:38,640 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 33 treesize of output 17 [2021-11-23 13:36:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:38,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:46,791 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 74 treesize of output 70 [2021-11-23 13:36:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:49,080 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:36:49,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830287798] [2021-11-23 13:36:49,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830287798] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:49,080 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:49,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 19 [2021-11-23 13:36:49,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987457811] [2021-11-23 13:36:49,081 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:49,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 13:36:49,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:36:49,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 13:36:49,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=312, Unknown=3, NotChecked=0, Total=380 [2021-11-23 13:36:49,082 INFO L87 Difference]: Start difference. First operand 314 states and 320 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:59,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:59,308 INFO L93 Difference]: Finished difference Result 317 states and 323 transitions. [2021-11-23 13:36:59,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 13:36:59,309 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-23 13:36:59,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:59,312 INFO L225 Difference]: With dead ends: 317 [2021-11-23 13:36:59,312 INFO L226 Difference]: Without dead ends: 317 [2021-11-23 13:36:59,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=206, Invalid=600, Unknown=6, NotChecked=0, Total=812 [2021-11-23 13:36:59,314 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 268 mSDsluCounter, 2245 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 183 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:59,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 2479 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1140 Invalid, 0 Unknown, 183 Unchecked, 3.2s Time] [2021-11-23 13:36:59,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-11-23 13:36:59,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 312. [2021-11-23 13:36:59,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 209 states have (on average 1.5215311004784688) internal successors, (318), 311 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 318 transitions. [2021-11-23 13:36:59,325 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 318 transitions. Word has length 25 [2021-11-23 13:36:59,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:59,326 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 318 transitions. [2021-11-23 13:36:59,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:59,326 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 318 transitions. [2021-11-23 13:36:59,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 13:36:59,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:59,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:59,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:59,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:36:59,543 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 142 more)] === [2021-11-23 13:36:59,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:59,544 INFO L85 PathProgramCache]: Analyzing trace with hash -2140849859, now seen corresponding path program 1 times [2021-11-23 13:36:59,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:36:59,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238645850] [2021-11-23 13:36:59,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:59,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:36:59,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:36:59,547 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:36:59,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 13:36:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:59,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:36:59,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:59,921 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 13:36:59,922 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 29 treesize of output 31 [2021-11-23 13:36:59,933 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 13:36:59,933 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 28 treesize of output 24 [2021-11-23 13:37:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:37:00,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:37:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:37:03,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:37:03,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238645850] [2021-11-23 13:37:03,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238645850] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:37:03,564 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:37:03,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-23 13:37:03,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632416926] [2021-11-23 13:37:03,564 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:37:03,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:37:03,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:37:03,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:37:03,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-11-23 13:37:03,566 INFO L87 Difference]: Start difference. First operand 312 states and 318 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:05,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:37:05,556 INFO L93 Difference]: Finished difference Result 355 states and 363 transitions. [2021-11-23 13:37:05,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:37:05,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-23 13:37:05,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:37:05,560 INFO L225 Difference]: With dead ends: 355 [2021-11-23 13:37:05,560 INFO L226 Difference]: Without dead ends: 355 [2021-11-23 13:37:05,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=24, Invalid=47, Unknown=1, NotChecked=0, Total=72 [2021-11-23 13:37:05,562 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 150 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 221 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:37:05,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 747 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 247 Invalid, 0 Unknown, 221 Unchecked, 1.9s Time] [2021-11-23 13:37:05,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-11-23 13:37:05,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 345. [2021-11-23 13:37:05,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 243 states have (on average 1.4609053497942386) internal successors, (355), 344 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:05,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 355 transitions. [2021-11-23 13:37:05,576 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 355 transitions. Word has length 26 [2021-11-23 13:37:05,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:37:05,576 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 355 transitions. [2021-11-23 13:37:05,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:05,577 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 355 transitions. [2021-11-23 13:37:05,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 13:37:05,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:37:05,579 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:37:05,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 13:37:05,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:37:05,796 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 142 more)] === [2021-11-23 13:37:05,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:37:05,797 INFO L85 PathProgramCache]: Analyzing trace with hash -545385939, now seen corresponding path program 1 times [2021-11-23 13:37:05,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:37:05,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918812702] [2021-11-23 13:37:05,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:37:05,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:37:05,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:37:05,800 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:37:05,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aac24d6-5b7e-4d0f-aa3e-7a79a64d1b1d/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 13:37:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:37:06,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-23 13:37:06,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:37:06,267 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 13:37:06,267 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 22 treesize of output 29 [2021-11-23 13:37:06,788 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 [2021-11-23 13:37:06,958 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 [2021-11-23 13:37:07,127 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-11-23 13:37:07,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 35 [2021-11-23 13:37:07,488 INFO L354 Elim1Store]: treesize reduction 42, result has 44.0 percent of original size [2021-11-23 13:37:07,488 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 4 case distinctions, treesize of input 37 treesize of output 58 [2021-11-23 13:37:07,914 INFO L354 Elim1Store]: treesize reduction 566, result has 2.9 percent of original size [2021-11-23 13:37:07,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 108 treesize of output 53 [2021-11-23 13:37:08,219 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 13:37:08,220 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 68 treesize of output 41 [2021-11-23 13:37:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:37:08,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:37:15,701 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_gl_insert_~node~1#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_28| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_28|))) (= (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_28| (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_28| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_28|) |ULTIMATE.start_gl_insert_~node~1#1.offset| v_DerPreprocessor_13) (bvadd |ULTIMATE.start_gl_insert_~node~1#1.offset| (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~1#1.offset|) v_DerPreprocessor_15) (bvadd (_ bv3 32) |ULTIMATE.start_gl_insert_~node~1#1.offset|) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))))) (_ bv1 1)) (_ bv0 1)))) is different from false [2021-11-23 13:37:17,776 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_gl_insert_~node~1#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_28| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_28|))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_28| (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_28| (store (store (store (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_28|) |ULTIMATE.start_gl_insert_~node~1#1.offset| v_DerPreprocessor_13) (bvadd |ULTIMATE.start_gl_insert_~node~1#1.offset| (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) |ULTIMATE.start_gl_insert_~node~1#1.offset|) v_DerPreprocessor_15) (bvadd (_ bv3 32) |ULTIMATE.start_gl_insert_~node~1#1.offset|) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))))))))))))) is different from false [2021-11-23 13:37:19,938 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_gl_insert_~node~1#1.base_28| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (|v_ULTIMATE.start_gl_insert_~node~1#1.offset_27| (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_28|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_28| (_ bv1 1)) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base|) (bvadd |c_ULTIMATE.start_gl_insert_~node~1#1.offset| (_ bv12 32)) |c_ULTIMATE.start_gl_insert_~node~1#1.base|)))) (store .cse0 |v_ULTIMATE.start_gl_insert_~node~1#1.base_28| (store (store (store (store (select .cse0 |v_ULTIMATE.start_gl_insert_~node~1#1.base_28|) |v_ULTIMATE.start_gl_insert_~node~1#1.offset_27| v_DerPreprocessor_13) (bvadd |v_ULTIMATE.start_gl_insert_~node~1#1.offset_27| (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) |v_ULTIMATE.start_gl_insert_~node~1#1.offset_27|) v_DerPreprocessor_15) (bvadd (_ bv3 32) |v_ULTIMATE.start_gl_insert_~node~1#1.offset_27|) v_DerPreprocessor_16))) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))))))))) (_ bv1 1))))) is different from false [2021-11-23 13:37:22,045 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_gl_insert_~node~1#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_gl_insert_~node~1#1.base_28| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (|v_ULTIMATE.start_gl_insert_~node~1#1.offset_27| (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_28|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_28| (_ bv1 1)) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base|) (bvadd |ULTIMATE.start_gl_insert_~node~1#1.offset| (_ bv12 32)) |c_ULTIMATE.start_gl_insert_~node~1#1.base|)))) (store .cse0 |v_ULTIMATE.start_gl_insert_~node~1#1.base_28| (store (store (store (store (select .cse0 |v_ULTIMATE.start_gl_insert_~node~1#1.base_28|) |v_ULTIMATE.start_gl_insert_~node~1#1.offset_27| v_DerPreprocessor_13) (bvadd |v_ULTIMATE.start_gl_insert_~node~1#1.offset_27| (_ bv1 32)) v_DerPreprocessor_14) (bvadd (_ bv2 32) |v_ULTIMATE.start_gl_insert_~node~1#1.offset_27|) v_DerPreprocessor_15) (bvadd (_ bv3 32) |v_ULTIMATE.start_gl_insert_~node~1#1.offset_27|) v_DerPreprocessor_16))) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))))))))) (_ bv1 1))))) is different from false [2021-11-23 13:37:22,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1343094760 treesize of output 1340997608