./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0019_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0019_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef47df31d033e531a0040913ad039c21826bf787c77c5128ceae3ef436a47b49 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:30:59,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:30:59,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:30:59,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:30:59,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:30:59,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:30:59,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:30:59,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:30:59,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:30:59,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:30:59,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:30:59,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:30:59,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:30:59,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:30:59,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:30:59,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:30:59,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:30:59,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:30:59,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:30:59,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:30:59,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:30:59,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:30:59,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:30:59,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:30:59,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:30:59,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:30:59,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:30:59,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:30:59,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:30:59,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:30:59,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:30:59,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:30:59,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:30:59,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:30:59,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:30:59,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:30:59,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:30:59,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:30:59,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:30:59,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:30:59,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:30:59,208 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 17:30:59,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:30:59,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:30:59,252 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:30:59,252 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:30:59,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:30:59,253 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:30:59,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:30:59,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:30:59,254 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:30:59,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:30:59,256 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:30:59,256 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:30:59,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:30:59,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:30:59,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:30:59,257 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:30:59,257 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:30:59,258 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:30:59,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:30:59,258 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:30:59,258 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:30:59,258 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:30:59,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:30:59,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:30:59,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:30:59,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:30:59,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:30:59,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:30:59,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:30:59,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:30:59,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:30:59,261 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_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef47df31d033e531a0040913ad039c21826bf787c77c5128ceae3ef436a47b49 [2021-11-13 17:30:59,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:30:59,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:30:59,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:30:59,627 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:30:59,628 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:30:59,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/list-ext-properties/test-0019_1-2.i [2021-11-13 17:30:59,710 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/data/caba43cb5/52fde2243b954ffc83565768d798553e/FLAG755a0784e [2021-11-13 17:31:00,320 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:31:00,325 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/sv-benchmarks/c/list-ext-properties/test-0019_1-2.i [2021-11-13 17:31:00,336 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/data/caba43cb5/52fde2243b954ffc83565768d798553e/FLAG755a0784e [2021-11-13 17:31:00,582 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/data/caba43cb5/52fde2243b954ffc83565768d798553e [2021-11-13 17:31:00,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:31:00,585 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:31:00,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:00,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:31:00,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:31:00,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:00" (1/1) ... [2021-11-13 17:31:00,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7273cc55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:00, skipping insertion in model container [2021-11-13 17:31:00,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:00" (1/1) ... [2021-11-13 17:31:00,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:31:00,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:31:00,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:00,979 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) [2021-11-13 17:31:00,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@11948006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:00, skipping insertion in model container [2021-11-13 17:31:00,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:00,982 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 17:31:00,985 INFO L158 Benchmark]: Toolchain (without parser) took 398.04ms. Allocated memory is still 134.2MB. Free memory was 93.4MB in the beginning and 105.2MB in the end (delta: -11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 17:31:00,986 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 134.2MB. Free memory is still 111.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:31:00,987 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.11ms. Allocated memory is still 134.2MB. Free memory was 93.2MB in the beginning and 105.2MB in the end (delta: -12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 17:31:00,989 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 134.2MB. Free memory is still 111.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 394.11ms. Allocated memory is still 134.2MB. Free memory was 93.2MB in the beginning and 105.2MB in the end (delta: -12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 529]: 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_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0019_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef47df31d033e531a0040913ad039c21826bf787c77c5128ceae3ef436a47b49 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:31:03,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:31:03,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:31:03,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:31:03,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:31:03,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:31:03,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:31:03,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:31:03,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:31:03,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:31:03,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:31:03,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:31:03,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:31:03,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:31:03,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:31:03,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:31:03,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:31:03,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:31:03,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:31:03,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:31:03,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:31:03,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:31:03,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:31:03,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:31:03,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:31:03,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:31:03,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:31:03,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:31:03,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:31:03,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:31:03,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:31:03,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:31:03,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:31:03,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:31:03,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:31:03,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:31:03,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:31:03,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:31:03,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:31:03,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:31:03,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:31:03,404 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 17:31:03,431 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:31:03,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:31:03,431 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:31:03,432 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:31:03,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:31:03,433 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:31:03,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:31:03,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:31:03,434 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:31:03,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:31:03,434 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:31:03,435 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:31:03,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:31:03,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:31:03,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:31:03,436 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:31:03,436 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:31:03,436 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:31:03,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:31:03,436 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:31:03,437 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:31:03,437 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:31:03,437 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:31:03,437 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:31:03,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:31:03,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:31:03,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:31:03,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:31:03,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:31:03,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:31:03,439 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:31:03,439 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:31:03,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:31:03,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:31:03,440 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_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef47df31d033e531a0040913ad039c21826bf787c77c5128ceae3ef436a47b49 [2021-11-13 17:31:03,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:31:03,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:31:03,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:31:03,865 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:31:03,866 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:31:03,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/list-ext-properties/test-0019_1-2.i [2021-11-13 17:31:03,953 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/data/f7d781fe4/05a382cc3d3c407ca9fe7f37d5d0e643/FLAG0c46842db [2021-11-13 17:31:04,634 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:31:04,635 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/sv-benchmarks/c/list-ext-properties/test-0019_1-2.i [2021-11-13 17:31:04,647 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/data/f7d781fe4/05a382cc3d3c407ca9fe7f37d5d0e643/FLAG0c46842db [2021-11-13 17:31:04,917 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/data/f7d781fe4/05a382cc3d3c407ca9fe7f37d5d0e643 [2021-11-13 17:31:04,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:31:04,924 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:31:04,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:04,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:31:04,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:31:04,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:04" (1/1) ... [2021-11-13 17:31:04,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12161dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:04, skipping insertion in model container [2021-11-13 17:31:04,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:04" (1/1) ... [2021-11-13 17:31:04,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:31:05,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:31:05,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:05,450 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 17:31:05,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:31:05,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:05,492 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:31:05,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:05,571 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:31:05,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:05 WrapperNode [2021-11-13 17:31:05,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:05,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:31:05,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:31:05,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:31:05,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:05" (1/1) ... [2021-11-13 17:31:05,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:05" (1/1) ... [2021-11-13 17:31:05,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:05" (1/1) ... [2021-11-13 17:31:05,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:05" (1/1) ... [2021-11-13 17:31:05,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:05" (1/1) ... [2021-11-13 17:31:05,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:05" (1/1) ... [2021-11-13 17:31:05,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:05" (1/1) ... [2021-11-13 17:31:05,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:31:05,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:31:05,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:31:05,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:31:05,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:05" (1/1) ... [2021-11-13 17:31:05,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:31:05,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:31:05,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:31:05,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:31:05,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 17:31:05,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:31:05,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:31:05,789 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 17:31:05,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 17:31:05,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 17:31:05,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 17:31:05,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 17:31:05,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 17:31:05,790 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2021-11-13 17:31:05,790 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2021-11-13 17:31:05,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 17:31:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 17:31:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 17:31:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 17:31:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 17:31:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 17:31:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:31:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 17:31:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 17:31:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 17:31:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 17:31:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 17:31:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 17:31:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 17:31:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 17:31:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 17:31:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 17:31:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 17:31:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 17:31:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 17:31:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 17:31:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 17:31:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 17:31:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 17:31:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 17:31:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 17:31:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 17:31:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 17:31:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 17:31:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 17:31:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 17:31:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 17:31:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 17:31:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 17:31:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 17:31:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 17:31:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 17:31:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 17:31:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 17:31:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 17:31:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 17:31:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 17:31:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 17:31:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 17:31:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 17:31:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 17:31:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 17:31:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 17:31:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 17:31:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 17:31:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 17:31:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 17:31:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 17:31:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 17:31:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 17:31:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 17:31:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 17:31:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 17:31:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 17:31:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 17:31:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 17:31:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 17:31:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 17:31:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 17:31:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 17:31:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 17:31:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 17:31:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 17:31:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 17:31:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 17:31:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 17:31:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 17:31:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 17:31:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 17:31:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 17:31:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 17:31:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 17:31:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 17:31:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 17:31:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 17:31:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 17:31:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 17:31:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 17:31:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 17:31:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 17:31:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 17:31:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 17:31:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 17:31:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 17:31:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 17:31:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 17:31:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 17:31:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 17:31:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 17:31:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 17:31:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 17:31:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 17:31:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 17:31:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 17:31:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 17:31:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 17:31:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 17:31:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 17:31:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 17:31:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 17:31:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 17:31:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 17:31:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 17:31:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 17:31:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 17:31:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 17:31:05,818 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 17:31:05,818 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 17:31:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2021-11-13 17:31:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:31:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:31:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:31:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 17:31:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2021-11-13 17:31:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 17:31:05,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:31:05,828 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 17:31:05,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 17:31:05,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:31:05,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:31:05,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:31:05,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 17:31:05,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 17:31:06,601 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:31:06,606 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 17:31:06,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:06 BoogieIcfgContainer [2021-11-13 17:31:06,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:31:06,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:31:06,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:31:06,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:31:06,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:31:04" (1/3) ... [2021-11-13 17:31:06,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24104348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:06, skipping insertion in model container [2021-11-13 17:31:06,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:05" (2/3) ... [2021-11-13 17:31:06,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24104348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:06, skipping insertion in model container [2021-11-13 17:31:06,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:06" (3/3) ... [2021-11-13 17:31:06,621 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019_1-2.i [2021-11-13 17:31:06,627 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:31:06,627 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2021-11-13 17:31:06,684 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:31:06,691 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 [2021-11-13 17:31:06,692 INFO L340 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2021-11-13 17:31:06,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 37 states have (on average 1.972972972972973) internal successors, (73), 72 states have internal predecessors, (73), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:31:06,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 17:31:06,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:06,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:06,717 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_dataErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 30 more)] === [2021-11-13 17:31:06,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:06,721 INFO L85 PathProgramCache]: Analyzing trace with hash 433707246, now seen corresponding path program 1 times [2021-11-13 17:31:06,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:06,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70451162] [2021-11-13 17:31:06,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:06,735 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:06,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:06,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:06,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:31:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:06,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:31:06,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:07,001 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 [2021-11-13 17:31:07,108 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-13 17:31:07,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-11-13 17:31:07,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:07,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:07,313 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:07,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70451162] [2021-11-13 17:31:07,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70451162] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:07,314 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:07,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 17:31:07,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457786164] [2021-11-13 17:31:07,316 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:07,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:31:07,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:07,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:31:07,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:31:07,353 INFO L87 Difference]: Start difference. First operand has 81 states, 37 states have (on average 1.972972972972973) internal successors, (73), 72 states have internal predecessors, (73), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:07,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:07,738 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2021-11-13 17:31:07,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:31:07,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-13 17:31:07,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:07,749 INFO L225 Difference]: With dead ends: 75 [2021-11-13 17:31:07,749 INFO L226 Difference]: Without dead ends: 72 [2021-11-13 17:31:07,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:31:07,757 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 40 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 248.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.41ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 324.54ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:07,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 136 Invalid, 126 Unknown, 0 Unchecked, 6.41ms Time], IncrementalHoareTripleChecker [9 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 324.54ms Time] [2021-11-13 17:31:07,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-13 17:31:07,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-11-13 17:31:07,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 64 states have internal predecessors, (65), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 17:31:07,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2021-11-13 17:31:07,804 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 9 [2021-11-13 17:31:07,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:07,806 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2021-11-13 17:31:07,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:07,807 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2021-11-13 17:31:07,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 17:31:07,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:07,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:07,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:08,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:08,020 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_dataErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 30 more)] === [2021-11-13 17:31:08,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:08,021 INFO L85 PathProgramCache]: Analyzing trace with hash 433707247, now seen corresponding path program 1 times [2021-11-13 17:31:08,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:08,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21992388] [2021-11-13 17:31:08,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:08,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:08,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:08,023 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:08,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:31:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-13 17:31:08,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:08,223 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 [2021-11-13 17:31:08,230 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 [2021-11-13 17:31:08,332 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 17:31:08,332 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 27 treesize of output 29 [2021-11-13 17:31:08,345 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 17:31:08,346 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 26 treesize of output 22 [2021-11-13 17:31:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:08,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:08,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:08,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21992388] [2021-11-13 17:31:08,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21992388] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:08,966 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:08,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 17:31:08,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103371874] [2021-11-13 17:31:08,967 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:08,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:31:08,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:08,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:31:08,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:31:08,976 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:09,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:09,357 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2021-11-13 17:31:09,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:31:09,357 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-13 17:31:09,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:09,359 INFO L225 Difference]: With dead ends: 71 [2021-11-13 17:31:09,359 INFO L226 Difference]: Without dead ends: 71 [2021-11-13 17:31:09,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:31:09,361 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 11 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 310.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.49ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 365.14ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:09,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 166 Invalid, 182 Unknown, 0 Unchecked, 4.49ms Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 102 Unchecked, 365.14ms Time] [2021-11-13 17:31:09,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-13 17:31:09,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-11-13 17:31:09,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 63 states have internal predecessors, (64), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 17:31:09,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2021-11-13 17:31:09,380 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 9 [2021-11-13 17:31:09,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:09,382 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2021-11-13 17:31:09,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:09,386 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2021-11-13 17:31:09,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-13 17:31:09,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:09,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:09,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:09,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:09,590 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_dataErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 30 more)] === [2021-11-13 17:31:09,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:09,590 INFO L85 PathProgramCache]: Analyzing trace with hash 180836432, now seen corresponding path program 1 times [2021-11-13 17:31:09,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:09,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081628830] [2021-11-13 17:31:09,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:09,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:09,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:09,593 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:09,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 17:31:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:09,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 17:31:09,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:09,770 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 [2021-11-13 17:31:09,777 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 [2021-11-13 17:31:09,875 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 17:31:09,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2021-11-13 17:31:09,894 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 17:31:09,896 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 [2021-11-13 17:31:10,026 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-13 17:31:10,027 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 3 case distinctions, treesize of input 32 treesize of output 37 [2021-11-13 17:31:10,035 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 17:31:10,035 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 31 treesize of output 27 [2021-11-13 17:31:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:10,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:12,186 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_alloc_data_#t~malloc6.base_4| (_ BitVec 32))) (or (let ((.cse0 (bvadd (_ bv8 32) c_alloc_data_~pdata.offset))) (and (bvule .cse0 (select (store |c_#length| |v_alloc_data_#t~malloc6.base_4| (_ bv4 32)) c_alloc_data_~pdata.base)) (bvule (bvadd (_ bv4 32) c_alloc_data_~pdata.offset) .cse0))) (not (= (_ bv0 1) (select |c_#valid| |v_alloc_data_#t~malloc6.base_4|))))) is different from false [2021-11-13 17:31:12,254 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-13 17:31:12,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-11-13 17:31:13,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:13,207 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:13,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081628830] [2021-11-13 17:31:13,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081628830] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:13,208 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:13,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-13 17:31:13,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499841039] [2021-11-13 17:31:13,209 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:13,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:31:13,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:13,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:31:13,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=53, Unknown=1, NotChecked=14, Total=90 [2021-11-13 17:31:13,211 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand has 10 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:13,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:13,714 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2021-11-13 17:31:13,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:31:13,721 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-13 17:31:13,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:13,722 INFO L225 Difference]: With dead ends: 70 [2021-11-13 17:31:13,722 INFO L226 Difference]: Without dead ends: 70 [2021-11-13 17:31:13,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=28, Invalid=65, Unknown=1, NotChecked=16, Total=110 [2021-11-13 17:31:13,724 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 5 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 356.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.57ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 211 IncrementalHoareTripleChecker+Unchecked, 427.73ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:13,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 265 Invalid, 329 Unknown, 0 Unchecked, 3.57ms Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 211 Unchecked, 427.73ms Time] [2021-11-13 17:31:13,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-13 17:31:13,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-11-13 17:31:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 36 states have (on average 1.75) internal successors, (63), 62 states have internal predecessors, (63), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 17:31:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2021-11-13 17:31:13,734 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 11 [2021-11-13 17:31:13,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:13,735 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2021-11-13 17:31:13,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2021-11-13 17:31:13,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 17:31:13,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:13,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:13,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:13,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:13,948 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting alloc_dataErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 30 more)] === [2021-11-13 17:31:13,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:13,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1985119217, now seen corresponding path program 1 times [2021-11-13 17:31:13,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:13,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743224355] [2021-11-13 17:31:13,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:13,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:13,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:13,951 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:13,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 17:31:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:31:14,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:14,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:14,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-13 17:31:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:14,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:14,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743224355] [2021-11-13 17:31:14,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743224355] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:14,560 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:14,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-13 17:31:14,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701461100] [2021-11-13 17:31:14,560 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:14,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:31:14,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:14,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:31:14,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:31:14,562 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand has 10 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:15,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:15,039 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2021-11-13 17:31:15,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:31:15,040 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-13 17:31:15,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:15,041 INFO L225 Difference]: With dead ends: 68 [2021-11-13 17:31:15,042 INFO L226 Difference]: Without dead ends: 68 [2021-11-13 17:31:15,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:31:15,043 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 58 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 309.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.94ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 365.27ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:15,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 321 Invalid, 75 Unknown, 0 Unchecked, 2.94ms Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 365.27ms Time] [2021-11-13 17:31:15,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-13 17:31:15,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-11-13 17:31:15,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 36 states have (on average 1.6944444444444444) internal successors, (61), 60 states have internal predecessors, (61), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 17:31:15,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2021-11-13 17:31:15,051 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 13 [2021-11-13 17:31:15,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:15,052 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2021-11-13 17:31:15,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:15,052 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2021-11-13 17:31:15,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-13 17:31:15,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:15,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:15,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-13 17:31:15,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:15,265 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting alloc_dataErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 30 more)] === [2021-11-13 17:31:15,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:15,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1409153583, now seen corresponding path program 1 times [2021-11-13 17:31:15,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:15,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771223490] [2021-11-13 17:31:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:15,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:15,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:15,267 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:15,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 17:31:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:15,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:31:15,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:15,428 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 [2021-11-13 17:31:15,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-11-13 17:31:15,528 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-11-13 17:31:15,528 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 29 treesize of output 40 [2021-11-13 17:31:15,626 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-13 17:31:15,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 48 [2021-11-13 17:31:15,757 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-13 17:31:15,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 35 [2021-11-13 17:31:15,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:15,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:24,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:24,065 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:24,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771223490] [2021-11-13 17:31:24,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771223490] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:24,066 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:24,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2021-11-13 17:31:24,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583964753] [2021-11-13 17:31:24,066 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:24,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:31:24,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:24,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:31:24,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=63, Unknown=3, NotChecked=0, Total=90 [2021-11-13 17:31:24,068 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:24,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:24,278 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2021-11-13 17:31:24,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:31:24,279 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-13 17:31:24,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:24,280 INFO L225 Difference]: With dead ends: 67 [2021-11-13 17:31:24,280 INFO L226 Difference]: Without dead ends: 67 [2021-11-13 17:31:24,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=30, Invalid=77, Unknown=3, NotChecked=0, Total=110 [2021-11-13 17:31:24,282 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 146.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.71ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 170.41ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:24,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 287 Invalid, 213 Unknown, 0 Unchecked, 2.71ms Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 152 Unchecked, 170.41ms Time] [2021-11-13 17:31:24,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-13 17:31:24,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-11-13 17:31:24,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 59 states have internal predecessors, (60), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 17:31:24,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2021-11-13 17:31:24,295 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 14 [2021-11-13 17:31:24,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:24,295 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2021-11-13 17:31:24,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:24,295 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2021-11-13 17:31:24,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-13 17:31:24,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:24,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:24,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:24,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:24,497 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting alloc_dataErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 30 more)] === [2021-11-13 17:31:24,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:24,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1409153584, now seen corresponding path program 1 times [2021-11-13 17:31:24,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:24,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227431416] [2021-11-13 17:31:24,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:24,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:24,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:24,499 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:24,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 17:31:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:24,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 17:31:24,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:24,652 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 [2021-11-13 17:31:24,660 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 [2021-11-13 17:31:24,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 17:31:24,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-13 17:31:24,775 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-13 17:31:24,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-11-13 17:31:24,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-13 17:31:24,869 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-13 17:31:24,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-11-13 17:31:24,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:31:24,894 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 [2021-11-13 17:31:24,987 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-13 17:31:24,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 32 [2021-11-13 17:31:24,997 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 29 treesize of output 21 [2021-11-13 17:31:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:25,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:30,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:30,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227431416] [2021-11-13 17:31:30,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227431416] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:30,715 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:30,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 10 [2021-11-13 17:31:30,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760719035] [2021-11-13 17:31:30,715 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:30,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 17:31:30,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:30,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 17:31:30,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=82, Unknown=1, NotChecked=0, Total=110 [2021-11-13 17:31:30,717 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:31,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:31,093 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2021-11-13 17:31:31,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:31:31,094 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-13 17:31:31,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:31,095 INFO L225 Difference]: With dead ends: 66 [2021-11-13 17:31:31,096 INFO L226 Difference]: Without dead ends: 66 [2021-11-13 17:31:31,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=41, Invalid=114, Unknown=1, NotChecked=0, Total=156 [2021-11-13 17:31:31,097 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 6 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 195.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.74ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 227.66ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:31,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 169 Invalid, 120 Unknown, 0 Unchecked, 1.74ms Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 81 Unchecked, 227.66ms Time] [2021-11-13 17:31:31,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-13 17:31:31,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-11-13 17:31:31,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 58 states have internal predecessors, (59), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 17:31:31,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2021-11-13 17:31:31,103 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 14 [2021-11-13 17:31:31,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:31,103 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2021-11-13 17:31:31,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:31,104 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2021-11-13 17:31:31,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 17:31:31,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:31,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:31,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:31,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:31,320 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting alloc_dataErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 30 more)] === [2021-11-13 17:31:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:31,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1084073846, now seen corresponding path program 1 times [2021-11-13 17:31:31,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:31,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484562590] [2021-11-13 17:31:31,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:31,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:31,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:31,321 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:31,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 17:31:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:31,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 17:31:31,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:31,470 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 [2021-11-13 17:31:31,512 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 17:31:31,513 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 [2021-11-13 17:31:31,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-13 17:31:31,576 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 [2021-11-13 17:31:31,642 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-13 17:31:31,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2021-11-13 17:31:32,005 INFO L354 Elim1Store]: treesize reduction 642, result has 2.6 percent of original size [2021-11-13 17:31:32,006 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 96 treesize of output 48 [2021-11-13 17:31:32,071 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-13 17:31:32,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2021-11-13 17:31:32,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:32,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:48,811 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 224 treesize of output 155 [2021-11-13 17:31:57,064 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 1632 treesize of output 1508 [2021-11-13 17:31:58,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:58,575 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:58,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484562590] [2021-11-13 17:31:58,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484562590] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:58,576 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:58,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 10] imperfect sequences [] total 14 [2021-11-13 17:31:58,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518281976] [2021-11-13 17:31:58,576 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:58,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 17:31:58,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:58,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 17:31:58,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=157, Unknown=10, NotChecked=0, Total=210 [2021-11-13 17:31:58,578 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:59,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:59,498 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2021-11-13 17:31:59,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:31:59,498 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-13 17:31:59,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:59,499 INFO L225 Difference]: With dead ends: 65 [2021-11-13 17:31:59,499 INFO L226 Difference]: Without dead ends: 65 [2021-11-13 17:31:59,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=107, Invalid=389, Unknown=10, NotChecked=0, Total=506 [2021-11-13 17:31:59,501 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 32 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 465.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.33ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 516.70ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:59,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 326 Invalid, 262 Unknown, 0 Unchecked, 3.33ms Time], IncrementalHoareTripleChecker [9 Valid, 164 Invalid, 0 Unknown, 89 Unchecked, 516.70ms Time] [2021-11-13 17:31:59,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-13 17:31:59,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-11-13 17:31:59,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 57 states have internal predecessors, (58), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 17:31:59,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2021-11-13 17:31:59,508 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 17 [2021-11-13 17:31:59,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:59,509 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2021-11-13 17:31:59,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:31:59,509 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2021-11-13 17:31:59,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 17:31:59,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:59,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:59,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:59,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:59,724 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting alloc_dataErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 30 more)] === [2021-11-13 17:31:59,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:59,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1084073847, now seen corresponding path program 1 times [2021-11-13 17:31:59,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:59,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622150656] [2021-11-13 17:31:59,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:59,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:59,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:59,727 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:59,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 17:31:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:59,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 17:31:59,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:59,884 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 [2021-11-13 17:31:59,946 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-13 17:31:59,947 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 [2021-11-13 17:31:59,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-13 17:32:00,010 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 [2021-11-13 17:32:00,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 17:32:00,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:32:00,093 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 27 treesize of output 26 [2021-11-13 17:32:00,539 INFO L354 Elim1Store]: treesize reduction 642, result has 2.6 percent of original size [2021-11-13 17:32:00,539 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 173 treesize of output 101 [2021-11-13 17:32:00,623 INFO L354 Elim1Store]: treesize reduction 492, result has 1.8 percent of original size [2021-11-13 17:32:00,623 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 101 treesize of output 32 [2021-11-13 17:32:00,679 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-13 17:32:00,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 31 [2021-11-13 17:32:00,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-13 17:32:00,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:00,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:17,523 WARN L227 SmtUtils]: Spent 6.26s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 17:32:31,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:32:32,777 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 215 treesize of output 146 [2021-11-13 17:32:32,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:32,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:32:32,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622150656] [2021-11-13 17:32:32,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622150656] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:32,948 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:32,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 10] imperfect sequences [] total 14 [2021-11-13 17:32:32,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098307787] [2021-11-13 17:32:32,948 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:32,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 17:32:32,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:32:32,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 17:32:32,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=165, Unknown=3, NotChecked=0, Total=210 [2021-11-13 17:32:32,950 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:32:34,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:34,210 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2021-11-13 17:32:34,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:32:34,211 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-13 17:32:34,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:34,213 INFO L225 Difference]: With dead ends: 64 [2021-11-13 17:32:34,213 INFO L226 Difference]: Without dead ends: 64 [2021-11-13 17:32:34,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 31.8s TimeCoverageRelationStatistics Valid=102, Invalid=401, Unknown=3, NotChecked=0, Total=506 [2021-11-13 17:32:34,214 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 18 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 619.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.71ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 695.06ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:34,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 404 Invalid, 273 Unknown, 0 Unchecked, 3.71ms Time], IncrementalHoareTripleChecker [13 Valid, 204 Invalid, 0 Unknown, 56 Unchecked, 695.06ms Time] [2021-11-13 17:32:34,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-13 17:32:34,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-13 17:32:34,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 56 states have internal predecessors, (57), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 17:32:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2021-11-13 17:32:34,222 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 17 [2021-11-13 17:32:34,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:34,222 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2021-11-13 17:32:34,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:32:34,223 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2021-11-13 17:32:34,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-13 17:32:34,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:34,224 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] [2021-11-13 17:32:34,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:34,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:34,433 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 30 more)] === [2021-11-13 17:32:34,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:34,433 INFO L85 PathProgramCache]: Analyzing trace with hash -503035864, now seen corresponding path program 1 times [2021-11-13 17:32:34,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:34,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893826038] [2021-11-13 17:32:34,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:34,434 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:34,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:34,435 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:34,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 17:32:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:34,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:32:34,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:34,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:34,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-13 17:32:35,310 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 17:32:35,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-11-13 17:32:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:35,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:32:35,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893826038] [2021-11-13 17:32:35,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893826038] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:35,790 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:35,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-13 17:32:35,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954031674] [2021-11-13 17:32:35,791 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:35,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:32:35,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:32:35,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:32:35,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:32:35,792 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 10 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 17:32:36,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:36,572 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-11-13 17:32:36,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:32:36,574 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2021-11-13 17:32:36,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:36,575 INFO L225 Difference]: With dead ends: 62 [2021-11-13 17:32:36,575 INFO L226 Difference]: Without dead ends: 62 [2021-11-13 17:32:36,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-13 17:32:36,576 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 10 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 567.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.45ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 650.90ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:36,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 363 Invalid, 139 Unknown, 0 Unchecked, 3.45ms Time], IncrementalHoareTripleChecker [7 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 650.90ms Time] [2021-11-13 17:32:36,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-13 17:32:36,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-11-13 17:32:36,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 54 states have internal predecessors, (55), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 17:32:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-11-13 17:32:36,581 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 21 [2021-11-13 17:32:36,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:36,582 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-11-13 17:32:36,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 17:32:36,582 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-11-13 17:32:36,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 17:32:36,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:36,583 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] [2021-11-13 17:32:36,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:36,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:36,784 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting free_dataErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 30 more)] === [2021-11-13 17:32:36,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:36,784 INFO L85 PathProgramCache]: Analyzing trace with hash 952936534, now seen corresponding path program 1 times [2021-11-13 17:32:36,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:36,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549420760] [2021-11-13 17:32:36,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:36,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:36,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:36,786 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:36,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 17:32:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:36,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:32:36,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:37,010 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 [2021-11-13 17:32:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:37,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:37,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:37,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:32:37,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549420760] [2021-11-13 17:32:37,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549420760] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:37,076 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:37,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:32:37,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592213920] [2021-11-13 17:32:37,077 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:37,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:32:37,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:32:37,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:32:37,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:32:37,080 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:32:37,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:37,228 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-11-13 17:32:37,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:32:37,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2021-11-13 17:32:37,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:37,230 INFO L225 Difference]: With dead ends: 58 [2021-11-13 17:32:37,230 INFO L226 Difference]: Without dead ends: 58 [2021-11-13 17:32:37,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:32:37,231 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 22 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 123.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.93ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 143.85ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:37,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 60 Invalid, 36 Unknown, 0 Unchecked, 0.93ms Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 143.85ms Time] [2021-11-13 17:32:37,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-13 17:32:37,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-11-13 17:32:37,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 50 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 17:32:37,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2021-11-13 17:32:37,236 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 25 [2021-11-13 17:32:37,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:37,237 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2021-11-13 17:32:37,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:32:37,237 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2021-11-13 17:32:37,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 17:32:37,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:37,238 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] [2021-11-13 17:32:37,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:37,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:37,438 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting free_dataErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 30 more)] === [2021-11-13 17:32:37,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:37,439 INFO L85 PathProgramCache]: Analyzing trace with hash 952936535, now seen corresponding path program 1 times [2021-11-13 17:32:37,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:37,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778226958] [2021-11-13 17:32:37,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:37,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:37,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:37,440 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:37,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 17:32:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:37,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:32:37,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:37,648 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 [2021-11-13 17:32:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:37,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:32:37,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:37,769 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:32:37,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778226958] [2021-11-13 17:32:37,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778226958] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:37,770 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:37,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 17:32:37,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791229701] [2021-11-13 17:32:37,770 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:37,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:32:37,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:32:37,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:32:37,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:32:37,771 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:32:38,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:38,024 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-11-13 17:32:38,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:32:38,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2021-11-13 17:32:38,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:38,026 INFO L225 Difference]: With dead ends: 54 [2021-11-13 17:32:38,026 INFO L226 Difference]: Without dead ends: 54 [2021-11-13 17:32:38,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:32:38,027 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 24 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 219.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.06ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 248.77ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:38,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 74 Invalid, 41 Unknown, 0 Unchecked, 1.06ms Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 248.77ms Time] [2021-11-13 17:32:38,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-13 17:32:38,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-11-13 17:32:38,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 17:32:38,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-11-13 17:32:38,031 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 25 [2021-11-13 17:32:38,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:38,032 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-11-13 17:32:38,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:32:38,032 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-11-13 17:32:38,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 17:32:38,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:38,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:38,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 17:32:38,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:32:38,239 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting free_dataErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 30 more)] === [2021-11-13 17:32:38,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:38,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1626090053, now seen corresponding path program 1 times [2021-11-13 17:32:38,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:32:38,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557343474] [2021-11-13 17:32:38,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:38,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:32:38,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:32:38,240 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:32:38,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 17:32:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:38,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 17:32:38,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:32:38,527 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 [2021-11-13 17:32:38,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-13 17:32:38,719 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-13 17:32:38,719 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 [2021-11-13 17:32:38,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:32:38,802 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 37 treesize of output 36 [2021-11-13 17:32:39,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 17:34:27,759 WARN L227 SmtUtils]: Spent 1.81m on a formula simplification. DAG size of input: 104 DAG size of output: 63 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-13 17:34:27,760 INFO L354 Elim1Store]: treesize reduction 410, result has 36.8 percent of original size [2021-11-13 17:34:27,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 124 treesize of output 288 [2021-11-13 17:35:28,437 WARN L227 SmtUtils]: Spent 59.51s on a formula simplification. DAG size of input: 108 DAG size of output: 54 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-13 17:35:28,439 INFO L354 Elim1Store]: treesize reduction 492, result has 25.3 percent of original size [2021-11-13 17:35:28,439 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 167 treesize of output 245 [2021-11-13 17:37:37,207 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-13 17:37:37,207 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 114 treesize of output 104 [2021-11-13 17:37:37,364 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-13 17:37:37,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 49 [2021-11-13 17:37:37,717 INFO L354 Elim1Store]: treesize reduction 69, result has 34.9 percent of original size [2021-11-13 17:37:37,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 64 treesize of output 91 [2021-11-13 17:37:38,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 102 [2021-11-13 17:37:38,607 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-13 17:37:38,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 115 [2021-11-13 17:37:38,945 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 121 treesize of output 105 [2021-11-13 17:37:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:37:40,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:38:03,807 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 17:38:03,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 314 treesize of output 288 [2021-11-13 17:38:04,161 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-11-13 17:38:04,161 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 2 case distinctions, treesize of input 294 treesize of output 298 [2021-11-13 17:39:11,624 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-13 17:39:11,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:39:11,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557343474] [2021-11-13 17:39:11,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-13 17:39:11,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-13 17:39:11,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1565442490] [2021-11-13 17:39:11,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:39:11,633 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 17:39:11,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/cvc4 [2021-11-13 17:39:11,634 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 17:39:11,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-13 17:39:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:12,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-13 17:39:12,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:39:12,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-13 17:39:12,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819743996] [2021-11-13 17:39:12,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:39:12,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:39:12,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:39:12,042 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:39:12,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-13 17:39:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:39:12,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-13 17:39:12,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:39:12,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-13 17:39:12,211 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:39:12,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-13 17:39:12,212 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-11-13 17:39:12,212 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-13 17:39:12,219 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr8REQUIRES_VIOLATION (34 of 35 remaining) [2021-11-13 17:39:12,221 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (33 of 35 remaining) [2021-11-13 17:39:12,222 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (32 of 35 remaining) [2021-11-13 17:39:12,222 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (31 of 35 remaining) [2021-11-13 17:39:12,222 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (30 of 35 remaining) [2021-11-13 17:39:12,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4ENSURES_VIOLATIONMEMORY_LEAK (29 of 35 remaining) [2021-11-13 17:39:12,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr0REQUIRES_VIOLATION (28 of 35 remaining) [2021-11-13 17:39:12,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr1REQUIRES_VIOLATION (27 of 35 remaining) [2021-11-13 17:39:12,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr2REQUIRES_VIOLATION (26 of 35 remaining) [2021-11-13 17:39:12,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr3REQUIRES_VIOLATION (25 of 35 remaining) [2021-11-13 17:39:12,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr4REQUIRES_VIOLATION (24 of 35 remaining) [2021-11-13 17:39:12,224 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr5REQUIRES_VIOLATION (23 of 35 remaining) [2021-11-13 17:39:12,224 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr6REQUIRES_VIOLATION (22 of 35 remaining) [2021-11-13 17:39:12,224 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr7REQUIRES_VIOLATION (21 of 35 remaining) [2021-11-13 17:39:12,224 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr8REQUIRES_VIOLATION (20 of 35 remaining) [2021-11-13 17:39:12,224 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr9REQUIRES_VIOLATION (19 of 35 remaining) [2021-11-13 17:39:12,225 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr10REQUIRES_VIOLATION (18 of 35 remaining) [2021-11-13 17:39:12,225 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_dataErr11REQUIRES_VIOLATION (17 of 35 remaining) [2021-11-13 17:39:12,225 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr0REQUIRES_VIOLATION (16 of 35 remaining) [2021-11-13 17:39:12,225 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr1REQUIRES_VIOLATION (15 of 35 remaining) [2021-11-13 17:39:12,225 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr2REQUIRES_VIOLATION (14 of 35 remaining) [2021-11-13 17:39:12,225 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr3REQUIRES_VIOLATION (13 of 35 remaining) [2021-11-13 17:39:12,226 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr4REQUIRES_VIOLATION (12 of 35 remaining) [2021-11-13 17:39:12,226 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr5REQUIRES_VIOLATION (11 of 35 remaining) [2021-11-13 17:39:12,226 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr6REQUIRES_VIOLATION (10 of 35 remaining) [2021-11-13 17:39:12,227 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr7REQUIRES_VIOLATION (9 of 35 remaining) [2021-11-13 17:39:12,227 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr9REQUIRES_VIOLATION (8 of 35 remaining) [2021-11-13 17:39:12,227 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr10REQUIRES_VIOLATION (7 of 35 remaining) [2021-11-13 17:39:12,227 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr11REQUIRES_VIOLATION (6 of 35 remaining) [2021-11-13 17:39:12,227 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr12ASSERT_VIOLATIONMEMORY_FREE (5 of 35 remaining) [2021-11-13 17:39:12,228 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr13ASSERT_VIOLATIONMEMORY_FREE (4 of 35 remaining) [2021-11-13 17:39:12,228 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr14ASSERT_VIOLATIONMEMORY_FREE (3 of 35 remaining) [2021-11-13 17:39:12,228 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr15ASSERT_VIOLATIONMEMORY_FREE (2 of 35 remaining) [2021-11-13 17:39:12,228 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr16ASSERT_VIOLATIONMEMORY_FREE (1 of 35 remaining) [2021-11-13 17:39:12,228 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_dataErr17ASSERT_VIOLATIONMEMORY_FREE (0 of 35 remaining) [2021-11-13 17:39:12,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-13 17:39:12,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-13 17:39:12,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 17:39:12,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905f01fb-c068-43cb-8971-d93ca2636041/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:39:12,840 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:39:12,843 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:39:12,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 05:39:12 BoogieIcfgContainer [2021-11-13 17:39:12,858 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 17:39:12,858 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 17:39:12,858 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 17:39:12,859 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 17:39:12,859 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:06" (3/4) ... [2021-11-13 17:39:12,862 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 17:39:12,862 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 17:39:12,863 INFO L158 Benchmark]: Toolchain (without parser) took 487939.02ms. Allocated memory was 69.2MB in the beginning and 132.1MB in the end (delta: 62.9MB). Free memory was 49.8MB in the beginning and 78.8MB in the end (delta: -29.0MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2021-11-13 17:39:12,863 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 69.2MB. Free memory is still 50.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:39:12,864 INFO L158 Benchmark]: CACSL2BoogieTranslator took 647.40ms. Allocated memory is still 69.2MB. Free memory was 49.5MB in the beginning and 41.2MB in the end (delta: 8.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 17:39:12,864 INFO L158 Benchmark]: Boogie Preprocessor took 112.31ms. Allocated memory is still 69.2MB. Free memory was 41.2MB in the beginning and 38.3MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 17:39:12,865 INFO L158 Benchmark]: RCFGBuilder took 922.98ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 38.3MB in the beginning and 60.8MB in the end (delta: -22.5MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2021-11-13 17:39:12,865 INFO L158 Benchmark]: TraceAbstraction took 486246.65ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 60.3MB in the beginning and 78.8MB in the end (delta: -18.5MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2021-11-13 17:39:12,865 INFO L158 Benchmark]: Witness Printer took 4.02ms. Allocated memory is still 132.1MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:39:12,868 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 69.2MB. Free memory is still 50.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 647.40ms. Allocated memory is still 69.2MB. Free memory was 49.5MB in the beginning and 41.2MB in the end (delta: 8.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 112.31ms. Allocated memory is still 69.2MB. Free memory was 41.2MB in the beginning and 38.3MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 922.98ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 38.3MB in the beginning and 60.8MB in the end (delta: -22.5MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * TraceAbstraction took 486246.65ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 60.3MB in the beginning and 78.8MB in the end (delta: -18.5MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * Witness Printer took 4.02ms. Allocated memory is still 132.1MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L544] TData data; [L545] CALL alloc_data(&data) [L529] pdata->lo = (int *)malloc(sizeof(int)) [L530] pdata->hi = (int *)malloc(sizeof(int)) [L531] EXPR pdata->lo [L531] *(pdata->lo) = 4 [L532] EXPR pdata->hi [L532] *(pdata->hi) = 8 [L545] RET alloc_data(&data) [L546] CALL free_data(data) [L536] EXPR data.lo [L536] int *lo = data.lo; [L537] EXPR data.hi [L537] int *hi = data.hi; [L538] \read(*lo) - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 105 locations, 35 error locations. Started 1 CEGAR loops. OverallTime: 486.2s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 230 SdHoareTripleChecker+Valid, 4136.03ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 228 mSDsluCounter, 2571 SdHoareTripleChecker+Invalid, 3561.35ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 691 IncrementalHoareTripleChecker+Unchecked, 1973 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1050 IncrementalHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 598 mSDtfsCounter, 1050 mSolverCounterSat, 34.34ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 368 GetRequests, 248 SyntacticMatches, 14 SemanticMatches, 106 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 75.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=0, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 474.9s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 358 ConstructedInterpolants, 44 QuantifiedInterpolants, 5127 SizeOfPredicates, 87 NumberOfNonLiveVariables, 1424 ConjunctsInSsa, 133 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN