./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:08:04,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:08:04,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:08:04,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:08:04,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:08:04,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:08:04,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:08:04,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:08:04,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:08:04,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:08:04,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:08:04,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:08:04,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:08:04,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:08:04,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:08:04,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:08:04,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:08:04,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:08:04,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:08:04,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:08:04,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:08:04,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:08:04,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:08:04,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:08:04,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:08:04,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:08:04,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:08:04,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:08:04,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:08:04,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:08:04,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:08:04,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:08:04,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:08:04,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:08:04,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:08:04,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:08:04,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:08:04,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:08:04,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:08:04,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:08:04,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:08:04,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 22:08:04,585 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:08:04,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:08:04,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:08:04,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:08:04,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:08:04,586 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:08:04,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:08:04,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:08:04,586 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:08:04,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:08:04,587 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:08:04,587 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 22:08:04,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:08:04,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:08:04,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:08:04,587 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 22:08:04,587 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 22:08:04,588 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 22:08:04,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:08:04,588 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 22:08:04,588 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:08:04,588 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:08:04,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:08:04,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:08:04,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:08:04,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:08:04,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:08:04,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:08:04,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:08:04,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:08:04,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:08:04,589 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_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d [2021-12-06 22:08:04,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:08:04,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:08:04,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:08:04,802 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:08:04,802 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:08:04,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2021-12-06 22:08:04,849 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/data/73bcf078a/40cfc6fb83c1405a92ed8ffeea0fe977/FLAG438179f07 [2021-12-06 22:08:05,302 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:08:05,302 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2021-12-06 22:08:05,313 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/data/73bcf078a/40cfc6fb83c1405a92ed8ffeea0fe977/FLAG438179f07 [2021-12-06 22:08:05,325 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/data/73bcf078a/40cfc6fb83c1405a92ed8ffeea0fe977 [2021-12-06 22:08:05,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:08:05,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:08:05,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:08:05,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:08:05,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:08:05,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:08:05" (1/1) ... [2021-12-06 22:08:05,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@688c08c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:08:05, skipping insertion in model container [2021-12-06 22:08:05,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:08:05" (1/1) ... [2021-12-06 22:08:05,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:08:05,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:08:05,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:08:05,625 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-06 22:08:05,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@45993b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:08:05, skipping insertion in model container [2021-12-06 22:08:05,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:08:05,626 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-06 22:08:05,627 INFO L158 Benchmark]: Toolchain (without parser) took 298.85ms. Allocated memory is still 140.5MB. Free memory was 102.9MB in the beginning and 112.9MB in the end (delta: -10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 22:08:05,628 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 140.5MB. Free memory was 120.8MB in the beginning and 120.6MB in the end (delta: 153.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:08:05,628 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.62ms. Allocated memory is still 140.5MB. Free memory was 102.6MB in the beginning and 112.9MB in the end (delta: -10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 22:08:05,629 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 140.5MB. Free memory was 120.8MB in the beginning and 120.6MB in the end (delta: 153.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.62ms. Allocated memory is still 140.5MB. Free memory was 102.6MB in the beginning and 112.9MB in the end (delta: -10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:08:07,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:08:07,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:08:07,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:08:07,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:08:07,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:08:07,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:08:07,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:08:07,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:08:07,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:08:07,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:08:07,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:08:07,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:08:07,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:08:07,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:08:07,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:08:07,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:08:07,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:08:07,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:08:07,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:08:07,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:08:07,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:08:07,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:08:07,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:08:07,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:08:07,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:08:07,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:08:07,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:08:07,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:08:07,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:08:07,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:08:07,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:08:07,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:08:07,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:08:07,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:08:07,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:08:07,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:08:07,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:08:07,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:08:07,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:08:07,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:08:07,191 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-06 22:08:07,215 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:08:07,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:08:07,215 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:08:07,215 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:08:07,216 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:08:07,216 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:08:07,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:08:07,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:08:07,217 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:08:07,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:08:07,218 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:08:07,218 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 22:08:07,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:08:07,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:08:07,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:08:07,219 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 22:08:07,219 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 22:08:07,219 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 22:08:07,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:08:07,219 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 22:08:07,220 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 22:08:07,220 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 22:08:07,220 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:08:07,220 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:08:07,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:08:07,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:08:07,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:08:07,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:08:07,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:08:07,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:08:07,222 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 22:08:07,222 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 22:08:07,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:08:07,222 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 22:08:07,222 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_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d [2021-12-06 22:08:07,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:08:07,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:08:07,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:08:07,487 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:08:07,487 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:08:07,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2021-12-06 22:08:07,533 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/data/470e30b1d/df81fd63893847e888bbbcd9a2ebcb03/FLAGd678eaece [2021-12-06 22:08:07,990 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:08:07,990 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2021-12-06 22:08:08,003 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/data/470e30b1d/df81fd63893847e888bbbcd9a2ebcb03/FLAGd678eaece [2021-12-06 22:08:08,015 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/data/470e30b1d/df81fd63893847e888bbbcd9a2ebcb03 [2021-12-06 22:08:08,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:08:08,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:08:08,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:08:08,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:08:08,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:08:08,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:08:08" (1/1) ... [2021-12-06 22:08:08,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c29758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:08:08, skipping insertion in model container [2021-12-06 22:08:08,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:08:08" (1/1) ... [2021-12-06 22:08:08,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:08:08,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:08:08,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:08:08,365 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 22:08:08,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:08:08,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:08:08,425 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:08:08,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:08:08,505 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:08:08,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:08:08 WrapperNode [2021-12-06 22:08:08,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:08:08,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:08:08,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:08:08,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:08:08,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:08:08" (1/1) ... [2021-12-06 22:08:08,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:08:08" (1/1) ... [2021-12-06 22:08:08,547 INFO L137 Inliner]: procedures = 165, calls = 71, calls flagged for inlining = 23, calls inlined = 17, statements flattened = 120 [2021-12-06 22:08:08,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:08:08,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:08:08,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:08:08,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:08:08,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:08:08" (1/1) ... [2021-12-06 22:08:08,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:08:08" (1/1) ... [2021-12-06 22:08:08,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:08:08" (1/1) ... [2021-12-06 22:08:08,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:08:08" (1/1) ... [2021-12-06 22:08:08,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:08:08" (1/1) ... [2021-12-06 22:08:08,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:08:08" (1/1) ... [2021-12-06 22:08:08,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:08:08" (1/1) ... [2021-12-06 22:08:08,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:08:08,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:08:08,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:08:08,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:08:08,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:08:08" (1/1) ... [2021-12-06 22:08:08,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:08:08,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:08:08,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:08:08,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:08:08,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 22:08:08,644 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-12-06 22:08:08,645 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-12-06 22:08:08,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 22:08:08,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 22:08:08,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-12-06 22:08:08,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-12-06 22:08:08,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 22:08:08,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:08:08,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 22:08:08,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 22:08:08,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 22:08:08,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:08:08,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 22:08:08,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:08:08,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:08:08,750 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:08:08,751 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:08:09,019 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:08:09,024 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:08:09,024 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 22:08:09,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:08:09 BoogieIcfgContainer [2021-12-06 22:08:09,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:08:09,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:08:09,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:08:09,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:08:09,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:08:08" (1/3) ... [2021-12-06 22:08:09,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c5559d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:08:09, skipping insertion in model container [2021-12-06 22:08:09,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:08:08" (2/3) ... [2021-12-06 22:08:09,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c5559d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:08:09, skipping insertion in model container [2021-12-06 22:08:09,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:08:09" (3/3) ... [2021-12-06 22:08:09,031 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test22_2-2.i [2021-12-06 22:08:09,035 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:08:09,035 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2021-12-06 22:08:09,073 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:08:09,078 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:08:09,078 INFO L340 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2021-12-06 22:08:09,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 57 states have (on average 1.5964912280701755) internal successors, (91), 83 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 22:08:09,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 22:08:09,095 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:09,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:09,096 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:09,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:09,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1790059245, now seen corresponding path program 1 times [2021-12-06 22:08:09,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:09,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51307961] [2021-12-06 22:08:09,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:09,110 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:09,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:09,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:09,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 22:08:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:09,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:08:09,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:09,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:08:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:09,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:09,294 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:09,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51307961] [2021-12-06 22:08:09,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51307961] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:09,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:09,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:08:09,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042749877] [2021-12-06 22:08:09,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:09,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:08:09,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:09,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:08:09,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:08:09,322 INFO L87 Difference]: Start difference. First operand has 90 states, 57 states have (on average 1.5964912280701755) internal successors, (91), 83 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:09,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:09,674 INFO L93 Difference]: Finished difference Result 153 states and 173 transitions. [2021-12-06 22:08:09,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:08:09,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-12-06 22:08:09,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:09,683 INFO L225 Difference]: With dead ends: 153 [2021-12-06 22:08:09,683 INFO L226 Difference]: Without dead ends: 151 [2021-12-06 22:08:09,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:08:09,687 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 94 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:09,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 373 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:08:09,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-06 22:08:09,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 93. [2021-12-06 22:08:09,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 85 states have internal predecessors, (94), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 22:08:09,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2021-12-06 22:08:09,721 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 10 [2021-12-06 22:08:09,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:09,721 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2021-12-06 22:08:09,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:09,721 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2021-12-06 22:08:09,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 22:08:09,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:09,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:09,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:08:09,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:09,924 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:09,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:09,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1761430094, now seen corresponding path program 1 times [2021-12-06 22:08:09,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:09,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75789087] [2021-12-06 22:08:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:09,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:09,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:09,930 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:09,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 22:08:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:10,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:08:10,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:10,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:10,158 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:10,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75789087] [2021-12-06 22:08:10,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75789087] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:10,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:10,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:08:10,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93277964] [2021-12-06 22:08:10,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:10,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:08:10,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:10,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:08:10,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:08:10,162 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:10,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:10,182 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2021-12-06 22:08:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:08:10,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-12-06 22:08:10,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:10,184 INFO L225 Difference]: With dead ends: 110 [2021-12-06 22:08:10,184 INFO L226 Difference]: Without dead ends: 110 [2021-12-06 22:08:10,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:08:10,185 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 17 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:10,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 386 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:10,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-12-06 22:08:10,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 91. [2021-12-06 22:08:10,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 83 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 22:08:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2021-12-06 22:08:10,193 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 10 [2021-12-06 22:08:10,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:10,193 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2021-12-06 22:08:10,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:10,194 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2021-12-06 22:08:10,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 22:08:10,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:10,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:10,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 22:08:10,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:10,396 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:10,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:10,398 INFO L85 PathProgramCache]: Analyzing trace with hash 342738302, now seen corresponding path program 1 times [2021-12-06 22:08:10,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:10,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040445543] [2021-12-06 22:08:10,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:10,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:10,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:10,405 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:10,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 22:08:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:10,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 22:08:10,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:10,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:08:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:10,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:10,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:10,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040445543] [2021-12-06 22:08:10,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040445543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:10,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:10,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:08:10,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132180990] [2021-12-06 22:08:10,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:10,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:08:10,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:10,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:08:10,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:08:10,622 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:10,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:10,946 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2021-12-06 22:08:10,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:08:10,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-06 22:08:10,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:10,948 INFO L225 Difference]: With dead ends: 128 [2021-12-06 22:08:10,948 INFO L226 Difference]: Without dead ends: 128 [2021-12-06 22:08:10,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:08:10,949 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 69 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:10,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 465 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:08:10,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-12-06 22:08:10,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 90. [2021-12-06 22:08:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 82 states have internal predecessors, (90), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 22:08:10,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2021-12-06 22:08:10,957 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 11 [2021-12-06 22:08:10,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:10,957 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2021-12-06 22:08:10,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:10,957 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2021-12-06 22:08:10,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:08:10,958 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:10,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:10,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 22:08:11,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:11,159 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:11,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:11,162 INFO L85 PathProgramCache]: Analyzing trace with hash 2034926041, now seen corresponding path program 1 times [2021-12-06 22:08:11,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:11,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019173838] [2021-12-06 22:08:11,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:11,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:11,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:11,169 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:11,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 22:08:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:11,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:08:11,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:11,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:11,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:11,286 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:11,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019173838] [2021-12-06 22:08:11,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019173838] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:11,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:11,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:08:11,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475676075] [2021-12-06 22:08:11,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:11,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:08:11,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:11,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:08:11,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:08:11,287 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:11,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:11,305 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2021-12-06 22:08:11,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:08:11,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-06 22:08:11,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:11,307 INFO L225 Difference]: With dead ends: 109 [2021-12-06 22:08:11,307 INFO L226 Difference]: Without dead ends: 109 [2021-12-06 22:08:11,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:08:11,308 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 33 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:11,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 410 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:11,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-12-06 22:08:11,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 90. [2021-12-06 22:08:11,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.5084745762711864) internal successors, (89), 82 states have internal predecessors, (89), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 22:08:11,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2021-12-06 22:08:11,321 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 12 [2021-12-06 22:08:11,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:11,321 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2021-12-06 22:08:11,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:11,321 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2021-12-06 22:08:11,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:08:11,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:11,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:11,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-06 22:08:11,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:11,522 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:11,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:11,523 INFO L85 PathProgramCache]: Analyzing trace with hash -517230920, now seen corresponding path program 1 times [2021-12-06 22:08:11,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:11,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981215351] [2021-12-06 22:08:11,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:11,523 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:11,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:11,524 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:11,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 22:08:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:11,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 22:08:11,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:11,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:11,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:11,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:11,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981215351] [2021-12-06 22:08:11,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981215351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:11,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:11,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:08:11,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776679835] [2021-12-06 22:08:11,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:11,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:08:11,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:11,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:08:11,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:08:11,588 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:11,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:11,611 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2021-12-06 22:08:11,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:08:11,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-06 22:08:11,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:11,612 INFO L225 Difference]: With dead ends: 106 [2021-12-06 22:08:11,612 INFO L226 Difference]: Without dead ends: 106 [2021-12-06 22:08:11,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:08:11,613 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 15 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:11,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 281 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:11,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-06 22:08:11,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 92. [2021-12-06 22:08:11,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 84 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 22:08:11,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2021-12-06 22:08:11,619 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 12 [2021-12-06 22:08:11,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:11,620 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2021-12-06 22:08:11,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:11,620 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2021-12-06 22:08:11,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 22:08:11,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:11,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:11,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-06 22:08:11,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:11,822 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:11,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:11,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1400250303, now seen corresponding path program 1 times [2021-12-06 22:08:11,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:11,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863734909] [2021-12-06 22:08:11,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:11,825 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:11,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:11,827 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:11,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 22:08:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:11,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:08:11,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:11,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:11,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:11,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:11,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863734909] [2021-12-06 22:08:11,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863734909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:11,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:11,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:08:11,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533861050] [2021-12-06 22:08:11,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:11,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:08:11,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:11,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:08:11,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:08:11,960 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:11,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:11,977 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2021-12-06 22:08:11,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:08:11,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-06 22:08:11,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:11,979 INFO L225 Difference]: With dead ends: 100 [2021-12-06 22:08:11,979 INFO L226 Difference]: Without dead ends: 100 [2021-12-06 22:08:11,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:08:11,980 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 31 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:11,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 200 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:11,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-12-06 22:08:11,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2021-12-06 22:08:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 85 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 22:08:11,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2021-12-06 22:08:11,988 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 16 [2021-12-06 22:08:11,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:11,988 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2021-12-06 22:08:11,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:11,989 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2021-12-06 22:08:11,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 22:08:11,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:11,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:11,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 22:08:12,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:12,192 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:12,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:12,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1200886583, now seen corresponding path program 1 times [2021-12-06 22:08:12,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:12,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534617174] [2021-12-06 22:08:12,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:12,195 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:12,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:12,197 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:12,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 22:08:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:12,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 22:08:12,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:12,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:12,356 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:12,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534617174] [2021-12-06 22:08:12,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534617174] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:12,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:12,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:08:12,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672024870] [2021-12-06 22:08:12,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:12,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:08:12,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:12,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:08:12,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:08:12,357 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:12,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:12,396 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2021-12-06 22:08:12,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:08:12,397 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-06 22:08:12,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:12,398 INFO L225 Difference]: With dead ends: 106 [2021-12-06 22:08:12,398 INFO L226 Difference]: Without dead ends: 106 [2021-12-06 22:08:12,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:08:12,398 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 14 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:12,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 454 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:12,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-06 22:08:12,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2021-12-06 22:08:12,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 91 states have internal predecessors, (97), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:08:12,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2021-12-06 22:08:12,404 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 17 [2021-12-06 22:08:12,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:12,404 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2021-12-06 22:08:12,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:12,404 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2021-12-06 22:08:12,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 22:08:12,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:12,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:12,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 22:08:12,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:12,607 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:12,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:12,607 INFO L85 PathProgramCache]: Analyzing trace with hash -517345560, now seen corresponding path program 1 times [2021-12-06 22:08:12,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:12,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713980741] [2021-12-06 22:08:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:12,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:12,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:12,609 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:12,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 22:08:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:12,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:08:12,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:12,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:12,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:08:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:12,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:12,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713980741] [2021-12-06 22:08:12,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713980741] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:08:12,752 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:08:12,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-06 22:08:12,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932499592] [2021-12-06 22:08:12,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:08:12,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:08:12,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:12,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:08:12,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:08:12,753 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:12,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:12,818 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2021-12-06 22:08:12,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:08:12,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-06 22:08:12,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:12,819 INFO L225 Difference]: With dead ends: 107 [2021-12-06 22:08:12,819 INFO L226 Difference]: Without dead ends: 107 [2021-12-06 22:08:12,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:08:12,820 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 62 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:12,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 465 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:12,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-12-06 22:08:12,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2021-12-06 22:08:12,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 70 states have (on average 1.4285714285714286) internal successors, (100), 94 states have internal predecessors, (100), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:08:12,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 113 transitions. [2021-12-06 22:08:12,824 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 113 transitions. Word has length 17 [2021-12-06 22:08:12,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:12,825 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 113 transitions. [2021-12-06 22:08:12,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:12,825 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 113 transitions. [2021-12-06 22:08:12,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 22:08:12,825 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:12,825 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:12,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 22:08:13,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:13,027 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:13,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:13,029 INFO L85 PathProgramCache]: Analyzing trace with hash -613690879, now seen corresponding path program 2 times [2021-12-06 22:08:13,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:13,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004275821] [2021-12-06 22:08:13,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:08:13,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:13,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:13,033 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:13,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 22:08:13,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 22:08:13,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:08:13,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 22:08:13,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:13,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:08:13,189 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 22:08:13,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:13,189 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:13,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004275821] [2021-12-06 22:08:13,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004275821] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:13,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:13,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:08:13,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794308870] [2021-12-06 22:08:13,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:13,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:08:13,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:13,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:08:13,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:08:13,194 INFO L87 Difference]: Start difference. First operand 104 states and 113 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:13,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:13,486 INFO L93 Difference]: Finished difference Result 136 states and 149 transitions. [2021-12-06 22:08:13,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:08:13,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-12-06 22:08:13,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:13,488 INFO L225 Difference]: With dead ends: 136 [2021-12-06 22:08:13,488 INFO L226 Difference]: Without dead ends: 136 [2021-12-06 22:08:13,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:08:13,488 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 91 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:13,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 511 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:08:13,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-06 22:08:13,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 103. [2021-12-06 22:08:13,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 93 states have internal predecessors, (99), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:08:13,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2021-12-06 22:08:13,493 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 20 [2021-12-06 22:08:13,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:13,493 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2021-12-06 22:08:13,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:13,493 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2021-12-06 22:08:13,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 22:08:13,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:13,494 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:13,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 22:08:13,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:13,696 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:13,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:13,697 INFO L85 PathProgramCache]: Analyzing trace with hash -613690878, now seen corresponding path program 1 times [2021-12-06 22:08:13,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:13,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512195110] [2021-12-06 22:08:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:13,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:13,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:13,701 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:13,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 22:08:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:13,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:08:13,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:13,874 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:13,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:08:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:14,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:14,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512195110] [2021-12-06 22:08:14,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512195110] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:08:14,034 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:08:14,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-12-06 22:08:14,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622164915] [2021-12-06 22:08:14,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:08:14,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 22:08:14,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:14,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:08:14,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:08:14,036 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:14,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:14,237 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2021-12-06 22:08:14,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:08:14,238 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-12-06 22:08:14,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:14,239 INFO L225 Difference]: With dead ends: 112 [2021-12-06 22:08:14,239 INFO L226 Difference]: Without dead ends: 112 [2021-12-06 22:08:14,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:08:14,240 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 30 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:14,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 918 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:08:14,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-12-06 22:08:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2021-12-06 22:08:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 76 states have (on average 1.381578947368421) internal successors, (105), 99 states have internal predecessors, (105), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 22:08:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 118 transitions. [2021-12-06 22:08:14,245 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 118 transitions. Word has length 20 [2021-12-06 22:08:14,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:14,245 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 118 transitions. [2021-12-06 22:08:14,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:14,246 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 118 transitions. [2021-12-06 22:08:14,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 22:08:14,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:14,246 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:14,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-06 22:08:14,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:14,447 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:14,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:14,448 INFO L85 PathProgramCache]: Analyzing trace with hash -694582635, now seen corresponding path program 1 times [2021-12-06 22:08:14,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:14,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968319929] [2021-12-06 22:08:14,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:14,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:14,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:14,449 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:14,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 22:08:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:14,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:08:14,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:08:14,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:14,519 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:14,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968319929] [2021-12-06 22:08:14,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968319929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:14,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:14,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:08:14,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595203141] [2021-12-06 22:08:14,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:14,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:08:14,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:14,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:08:14,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:08:14,520 INFO L87 Difference]: Start difference. First operand 109 states and 118 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:08:14,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:14,615 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2021-12-06 22:08:14,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:08:14,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2021-12-06 22:08:14,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:14,616 INFO L225 Difference]: With dead ends: 115 [2021-12-06 22:08:14,616 INFO L226 Difference]: Without dead ends: 99 [2021-12-06 22:08:14,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:08:14,617 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 31 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:14,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 182 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:08:14,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-06 22:08:14,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2021-12-06 22:08:14,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 88 states have internal predecessors, (94), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 22:08:14,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2021-12-06 22:08:14,620 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 25 [2021-12-06 22:08:14,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:14,620 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2021-12-06 22:08:14,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 22:08:14,620 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2021-12-06 22:08:14,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 22:08:14,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:14,621 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:14,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 22:08:14,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:14,822 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:14,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:14,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1800263842, now seen corresponding path program 2 times [2021-12-06 22:08:14,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:14,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494592106] [2021-12-06 22:08:14,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:08:14,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:14,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:14,828 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:14,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 22:08:14,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 22:08:14,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:08:14,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 22:08:14,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:14,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:08:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-06 22:08:15,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:15,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:15,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494592106] [2021-12-06 22:08:15,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494592106] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:15,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:15,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:08:15,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460192319] [2021-12-06 22:08:15,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:15,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:08:15,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:15,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:08:15,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:08:15,072 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:15,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:15,538 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2021-12-06 22:08:15,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:08:15,538 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-12-06 22:08:15,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:15,539 INFO L225 Difference]: With dead ends: 135 [2021-12-06 22:08:15,539 INFO L226 Difference]: Without dead ends: 135 [2021-12-06 22:08:15,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:08:15,540 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 97 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:15,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 591 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:08:15,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-12-06 22:08:15,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 94. [2021-12-06 22:08:15,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 66 states have (on average 1.4090909090909092) internal successors, (93), 87 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 22:08:15,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2021-12-06 22:08:15,545 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 26 [2021-12-06 22:08:15,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:15,545 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2021-12-06 22:08:15,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:15,546 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2021-12-06 22:08:15,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 22:08:15,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:15,547 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:15,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 22:08:15,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:15,748 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:15,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:15,749 INFO L85 PathProgramCache]: Analyzing trace with hash -819776159, now seen corresponding path program 1 times [2021-12-06 22:08:15,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:15,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682499999] [2021-12-06 22:08:15,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:15,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:15,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:15,754 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:15,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 22:08:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:15,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 22:08:15,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:16,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:08:16,439 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:08:16,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:16,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682499999] [2021-12-06 22:08:16,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682499999] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:08:16,439 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:08:16,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-12-06 22:08:16,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654799558] [2021-12-06 22:08:16,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:08:16,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 22:08:16,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:16,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 22:08:16,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2021-12-06 22:08:16,440 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:16,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:16,816 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2021-12-06 22:08:16,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 22:08:16,816 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-12-06 22:08:16,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:16,817 INFO L225 Difference]: With dead ends: 100 [2021-12-06 22:08:16,817 INFO L226 Difference]: Without dead ends: 100 [2021-12-06 22:08:16,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2021-12-06 22:08:16,818 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 29 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:16,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 1126 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:08:16,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-12-06 22:08:16,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-12-06 22:08:16,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 72 states have (on average 1.375) internal successors, (99), 93 states have internal predecessors, (99), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 22:08:16,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 107 transitions. [2021-12-06 22:08:16,821 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 107 transitions. Word has length 28 [2021-12-06 22:08:16,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:16,821 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 107 transitions. [2021-12-06 22:08:16,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:16,821 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 107 transitions. [2021-12-06 22:08:16,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 22:08:16,822 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:16,822 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:16,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-06 22:08:17,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:17,022 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:17,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:17,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1570464767, now seen corresponding path program 2 times [2021-12-06 22:08:17,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:17,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860831849] [2021-12-06 22:08:17,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:08:17,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:17,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:17,024 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:17,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 22:08:17,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 22:08:17,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:08:17,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:08:17,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-06 22:08:17,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:17,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:17,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860831849] [2021-12-06 22:08:17,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860831849] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:17,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:17,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:08:17,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355073600] [2021-12-06 22:08:17,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:17,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:08:17,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:17,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:08:17,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:08:17,137 INFO L87 Difference]: Start difference. First operand 100 states and 107 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:17,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:17,167 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2021-12-06 22:08:17,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:08:17,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-12-06 22:08:17,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:17,168 INFO L225 Difference]: With dead ends: 100 [2021-12-06 22:08:17,168 INFO L226 Difference]: Without dead ends: 100 [2021-12-06 22:08:17,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:08:17,169 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 49 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:17,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 366 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:17,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-12-06 22:08:17,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-12-06 22:08:17,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 72 states have (on average 1.3611111111111112) internal successors, (98), 93 states have internal predecessors, (98), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 22:08:17,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2021-12-06 22:08:17,172 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 34 [2021-12-06 22:08:17,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:17,173 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2021-12-06 22:08:17,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:17,173 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2021-12-06 22:08:17,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 22:08:17,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:17,173 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:17,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 22:08:17,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:17,374 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:17,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:17,375 INFO L85 PathProgramCache]: Analyzing trace with hash -234355352, now seen corresponding path program 1 times [2021-12-06 22:08:17,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:17,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495943406] [2021-12-06 22:08:17,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:17,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:17,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:17,376 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:17,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 22:08:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:17,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 22:08:17,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:17,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:08:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-06 22:08:17,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:17,594 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:17,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495943406] [2021-12-06 22:08:17,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495943406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:17,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:17,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:08:17,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113877794] [2021-12-06 22:08:17,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:17,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:08:17,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:17,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:08:17,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:08:17,596 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:17,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:17,858 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2021-12-06 22:08:17,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:08:17,859 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-12-06 22:08:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:17,859 INFO L225 Difference]: With dead ends: 98 [2021-12-06 22:08:17,860 INFO L226 Difference]: Without dead ends: 98 [2021-12-06 22:08:17,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:08:17,860 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 74 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:17,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 378 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:08:17,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-06 22:08:17,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-12-06 22:08:17,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 91 states have internal predecessors, (96), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 22:08:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2021-12-06 22:08:17,864 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 36 [2021-12-06 22:08:17,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:17,864 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2021-12-06 22:08:17,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:17,864 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2021-12-06 22:08:17,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 22:08:17,865 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:17,865 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:17,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-06 22:08:18,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:18,066 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:18,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:18,067 INFO L85 PathProgramCache]: Analyzing trace with hash -234355351, now seen corresponding path program 1 times [2021-12-06 22:08:18,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:18,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628556330] [2021-12-06 22:08:18,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:18,069 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:18,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:18,072 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:18,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 22:08:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:18,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 22:08:18,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:18,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:08:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-06 22:08:18,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:18,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:18,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628556330] [2021-12-06 22:08:18,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628556330] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:18,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:18,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:08:18,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886588448] [2021-12-06 22:08:18,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:18,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:08:18,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:18,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:08:18,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:08:18,434 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:18,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:18,759 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2021-12-06 22:08:18,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:08:18,760 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-12-06 22:08:18,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:18,760 INFO L225 Difference]: With dead ends: 96 [2021-12-06 22:08:18,760 INFO L226 Difference]: Without dead ends: 96 [2021-12-06 22:08:18,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:08:18,761 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 78 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:18,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 461 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:08:18,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-06 22:08:18,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-12-06 22:08:18,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 72 states have (on average 1.3055555555555556) internal successors, (94), 89 states have internal predecessors, (94), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 22:08:18,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2021-12-06 22:08:18,764 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 36 [2021-12-06 22:08:18,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:18,764 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2021-12-06 22:08:18,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:18,764 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2021-12-06 22:08:18,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 22:08:18,765 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:18,765 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:18,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-06 22:08:18,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:18,966 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:18,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:18,967 INFO L85 PathProgramCache]: Analyzing trace with hash -285061459, now seen corresponding path program 1 times [2021-12-06 22:08:18,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:18,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262206784] [2021-12-06 22:08:18,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:18,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:18,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:18,971 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:18,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 22:08:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:19,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:08:19,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-06 22:08:19,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:19,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:19,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262206784] [2021-12-06 22:08:19,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262206784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:19,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:19,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:08:19,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003569315] [2021-12-06 22:08:19,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:19,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:08:19,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:19,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:08:19,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:08:19,139 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:19,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:19,170 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2021-12-06 22:08:19,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:08:19,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-12-06 22:08:19,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:19,171 INFO L225 Difference]: With dead ends: 96 [2021-12-06 22:08:19,171 INFO L226 Difference]: Without dead ends: 96 [2021-12-06 22:08:19,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:08:19,172 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 69 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:19,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 396 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:19,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-06 22:08:19,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-12-06 22:08:19,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 88 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 22:08:19,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2021-12-06 22:08:19,175 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 36 [2021-12-06 22:08:19,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:19,175 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2021-12-06 22:08:19,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:08:19,175 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2021-12-06 22:08:19,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 22:08:19,175 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:19,176 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:19,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-06 22:08:19,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:19,377 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:19,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:19,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1910239882, now seen corresponding path program 1 times [2021-12-06 22:08:19,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:19,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145350614] [2021-12-06 22:08:19,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:19,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:19,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:19,382 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:19,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 22:08:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:19,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 22:08:19,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:19,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:08:19,669 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-06 22:08:19,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:19,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:19,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145350614] [2021-12-06 22:08:19,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145350614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:19,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:19,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:08:19,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403815835] [2021-12-06 22:08:19,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:19,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:08:19,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:19,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:08:19,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:08:19,670 INFO L87 Difference]: Start difference. First operand 96 states and 101 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:08:19,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:19,891 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2021-12-06 22:08:19,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:08:19,892 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2021-12-06 22:08:19,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:19,892 INFO L225 Difference]: With dead ends: 97 [2021-12-06 22:08:19,892 INFO L226 Difference]: Without dead ends: 97 [2021-12-06 22:08:19,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:08:19,893 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 61 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:19,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 366 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 21 Unchecked, 0.2s Time] [2021-12-06 22:08:19,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-06 22:08:19,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2021-12-06 22:08:19,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 86 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 22:08:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2021-12-06 22:08:19,896 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 44 [2021-12-06 22:08:19,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:19,896 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2021-12-06 22:08:19,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:08:19,896 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2021-12-06 22:08:19,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 22:08:19,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:19,896 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:19,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-06 22:08:20,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:20,098 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:20,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:20,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1910239883, now seen corresponding path program 1 times [2021-12-06 22:08:20,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:20,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054485865] [2021-12-06 22:08:20,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:20,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:20,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:20,103 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:20,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-06 22:08:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:20,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 22:08:20,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:20,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:08:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-06 22:08:20,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:20,455 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:20,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1054485865] [2021-12-06 22:08:20,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1054485865] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:20,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:20,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:08:20,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915268579] [2021-12-06 22:08:20,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:20,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:08:20,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:20,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:08:20,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:08:20,457 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:08:20,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:20,692 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2021-12-06 22:08:20,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:08:20,693 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2021-12-06 22:08:20,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:20,693 INFO L225 Difference]: With dead ends: 99 [2021-12-06 22:08:20,693 INFO L226 Difference]: Without dead ends: 99 [2021-12-06 22:08:20,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:08:20,694 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 64 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:20,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 349 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 130 Invalid, 0 Unknown, 17 Unchecked, 0.2s Time] [2021-12-06 22:08:20,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-06 22:08:20,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92. [2021-12-06 22:08:20,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 84 states have internal predecessors, (89), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 22:08:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2021-12-06 22:08:20,697 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 44 [2021-12-06 22:08:20,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:20,697 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2021-12-06 22:08:20,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:08:20,697 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2021-12-06 22:08:20,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 22:08:20,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:20,698 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:20,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-12-06 22:08:20,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:20,899 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:20,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:20,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1609523877, now seen corresponding path program 1 times [2021-12-06 22:08:20,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:20,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502015843] [2021-12-06 22:08:20,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:20,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:20,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:20,904 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:20,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-06 22:08:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:21,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:08:21,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-06 22:08:21,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:21,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:21,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502015843] [2021-12-06 22:08:21,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502015843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:21,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:21,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:08:21,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870438590] [2021-12-06 22:08:21,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:21,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:08:21,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:21,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:08:21,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:08:21,150 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:08:21,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:21,183 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2021-12-06 22:08:21,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:08:21,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2021-12-06 22:08:21,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:21,184 INFO L225 Difference]: With dead ends: 92 [2021-12-06 22:08:21,184 INFO L226 Difference]: Without dead ends: 92 [2021-12-06 22:08:21,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:08:21,185 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 36 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:21,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 389 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:21,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-12-06 22:08:21,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-12-06 22:08:21,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.2222222222222223) internal successors, (88), 84 states have internal predecessors, (88), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 22:08:21,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2021-12-06 22:08:21,187 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 49 [2021-12-06 22:08:21,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:21,187 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2021-12-06 22:08:21,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:08:21,188 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2021-12-06 22:08:21,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 22:08:21,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:21,188 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:21,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-06 22:08:21,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:21,389 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:21,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:21,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1068375809, now seen corresponding path program 1 times [2021-12-06 22:08:21,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:21,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672294569] [2021-12-06 22:08:21,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:21,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:21,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:21,393 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:21,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-06 22:08:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:21,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 22:08:21,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:21,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:08:21,802 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-06 22:08:21,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:21,802 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:21,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672294569] [2021-12-06 22:08:21,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672294569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:21,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:21,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:08:21,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492908132] [2021-12-06 22:08:21,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:21,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 22:08:21,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:21,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 22:08:21,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:08:21,803 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:08:22,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:22,094 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2021-12-06 22:08:22,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:08:22,094 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2021-12-06 22:08:22,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:22,095 INFO L225 Difference]: With dead ends: 122 [2021-12-06 22:08:22,095 INFO L226 Difference]: Without dead ends: 122 [2021-12-06 22:08:22,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:08:22,096 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 174 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:22,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 312 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 194 Invalid, 0 Unknown, 19 Unchecked, 0.2s Time] [2021-12-06 22:08:22,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-12-06 22:08:22,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 107. [2021-12-06 22:08:22,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 86 states have (on average 1.2209302325581395) internal successors, (105), 98 states have internal predecessors, (105), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 22:08:22,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2021-12-06 22:08:22,099 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 55 [2021-12-06 22:08:22,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:22,099 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2021-12-06 22:08:22,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:08:22,100 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2021-12-06 22:08:22,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 22:08:22,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:22,100 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:22,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-12-06 22:08:22,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:22,301 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_kobject_putErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:22,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:22,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1068375808, now seen corresponding path program 1 times [2021-12-06 22:08:22,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:22,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864546843] [2021-12-06 22:08:22,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:22,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:22,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:22,307 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:22,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-06 22:08:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:22,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-06 22:08:22,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:22,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:08:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-06 22:08:22,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:22,762 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:22,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864546843] [2021-12-06 22:08:22,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864546843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:22,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:22,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 22:08:22,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033293358] [2021-12-06 22:08:22,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:22,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:08:22,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:22,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:08:22,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:08:22,763 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:08:23,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:23,099 INFO L93 Difference]: Finished difference Result 109 states and 115 transitions. [2021-12-06 22:08:23,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:08:23,100 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2021-12-06 22:08:23,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:23,101 INFO L225 Difference]: With dead ends: 109 [2021-12-06 22:08:23,101 INFO L226 Difference]: Without dead ends: 109 [2021-12-06 22:08:23,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:08:23,104 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 152 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:23,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 379 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 203 Invalid, 0 Unknown, 8 Unchecked, 0.3s Time] [2021-12-06 22:08:23,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-12-06 22:08:23,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2021-12-06 22:08:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 86 states have (on average 1.1744186046511629) internal successors, (101), 96 states have internal predecessors, (101), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 22:08:23,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2021-12-06 22:08:23,107 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 55 [2021-12-06 22:08:23,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:23,108 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2021-12-06 22:08:23,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:08:23,108 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2021-12-06 22:08:23,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 22:08:23,108 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:23,108 INFO L514 BasicCegarLoop]: trace histogram [16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:23,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-12-06 22:08:23,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:23,310 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:23,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:23,311 INFO L85 PathProgramCache]: Analyzing trace with hash 7191578, now seen corresponding path program 1 times [2021-12-06 22:08:23,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:23,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381525367] [2021-12-06 22:08:23,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:23,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:23,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:23,315 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:23,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-06 22:08:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:23,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:08:23,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:23,738 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-06 22:08:23,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:23,738 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:23,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381525367] [2021-12-06 22:08:23,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381525367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:23,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:23,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:08:23,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230839880] [2021-12-06 22:08:23,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:23,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:08:23,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:23,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:08:23,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:08:23,739 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:08:23,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:23,807 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2021-12-06 22:08:23,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:08:23,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (4), 2 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 60 [2021-12-06 22:08:23,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:23,808 INFO L225 Difference]: With dead ends: 109 [2021-12-06 22:08:23,808 INFO L226 Difference]: Without dead ends: 105 [2021-12-06 22:08:23,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:08:23,808 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 62 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:23,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 456 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:08:23,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-06 22:08:23,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-12-06 22:08:23,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 96 states have internal predecessors, (99), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 22:08:23,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2021-12-06 22:08:23,811 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 60 [2021-12-06 22:08:23,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:23,812 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2021-12-06 22:08:23,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 22:08:23,812 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2021-12-06 22:08:23,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 22:08:23,812 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:23,812 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:23,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-12-06 22:08:24,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:24,013 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_kobject_putErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:24,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:24,014 INFO L85 PathProgramCache]: Analyzing trace with hash 392980163, now seen corresponding path program 1 times [2021-12-06 22:08:24,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:24,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587413680] [2021-12-06 22:08:24,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:24,014 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:24,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:24,015 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:24,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-06 22:08:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:24,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 22:08:24,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:24,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:08:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-06 22:08:24,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:24,411 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:24,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587413680] [2021-12-06 22:08:24,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587413680] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:24,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:24,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 22:08:24,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649281988] [2021-12-06 22:08:24,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:24,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:08:24,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:24,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:08:24,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:08:24,412 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:08:24,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:24,728 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2021-12-06 22:08:24,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:08:24,728 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2021-12-06 22:08:24,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:24,729 INFO L225 Difference]: With dead ends: 112 [2021-12-06 22:08:24,729 INFO L226 Difference]: Without dead ends: 112 [2021-12-06 22:08:24,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:08:24,730 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 110 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:24,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 326 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 204 Invalid, 0 Unknown, 19 Unchecked, 0.3s Time] [2021-12-06 22:08:24,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-12-06 22:08:24,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 105. [2021-12-06 22:08:24,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 87 states have (on average 1.1494252873563218) internal successors, (100), 96 states have internal predecessors, (100), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 22:08:24,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2021-12-06 22:08:24,736 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 61 [2021-12-06 22:08:24,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:24,736 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2021-12-06 22:08:24,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:08:24,736 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2021-12-06 22:08:24,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 22:08:24,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:24,737 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:24,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-12-06 22:08:24,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:24,938 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_kobject_putErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:24,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:24,940 INFO L85 PathProgramCache]: Analyzing trace with hash 392980164, now seen corresponding path program 1 times [2021-12-06 22:08:24,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:24,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607597458] [2021-12-06 22:08:24,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:24,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:24,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:24,944 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:24,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-06 22:08:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:25,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-06 22:08:25,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:25,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:08:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-06 22:08:25,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:25,491 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:25,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607597458] [2021-12-06 22:08:25,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607597458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:25,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:25,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 22:08:25,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632871000] [2021-12-06 22:08:25,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:25,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 22:08:25,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:25,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 22:08:25,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:08:25,492 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:08:25,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:25,899 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2021-12-06 22:08:25,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:08:25,900 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2021-12-06 22:08:25,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:25,901 INFO L225 Difference]: With dead ends: 103 [2021-12-06 22:08:25,901 INFO L226 Difference]: Without dead ends: 103 [2021-12-06 22:08:25,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:08:25,901 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 146 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:25,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 379 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 257 Invalid, 0 Unknown, 8 Unchecked, 0.3s Time] [2021-12-06 22:08:25,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-12-06 22:08:25,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-12-06 22:08:25,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 87 states have (on average 1.1149425287356323) internal successors, (97), 94 states have internal predecessors, (97), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 22:08:25,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2021-12-06 22:08:25,904 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 61 [2021-12-06 22:08:25,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:25,904 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2021-12-06 22:08:25,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:08:25,905 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2021-12-06 22:08:25,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 22:08:25,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:25,905 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:25,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-12-06 22:08:26,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:26,106 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_kobject_putErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:26,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:26,106 INFO L85 PathProgramCache]: Analyzing trace with hash -808735445, now seen corresponding path program 1 times [2021-12-06 22:08:26,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:26,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561596507] [2021-12-06 22:08:26,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:26,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:26,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:26,107 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:26,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-06 22:08:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:26,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 22:08:26,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-06 22:08:26,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:26,719 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:26,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561596507] [2021-12-06 22:08:26,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561596507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:26,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:26,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 22:08:26,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062683849] [2021-12-06 22:08:26,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:26,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 22:08:26,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:26,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 22:08:26,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:08:26,720 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:08:27,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:27,040 INFO L93 Difference]: Finished difference Result 102 states and 106 transitions. [2021-12-06 22:08:27,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:08:27,041 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2021-12-06 22:08:27,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:27,042 INFO L225 Difference]: With dead ends: 102 [2021-12-06 22:08:27,042 INFO L226 Difference]: Without dead ends: 102 [2021-12-06 22:08:27,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:08:27,042 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 157 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:27,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 383 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 185 Invalid, 0 Unknown, 7 Unchecked, 0.2s Time] [2021-12-06 22:08:27,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-06 22:08:27,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-12-06 22:08:27,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 87 states have (on average 1.103448275862069) internal successors, (96), 93 states have internal predecessors, (96), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 22:08:27,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2021-12-06 22:08:27,045 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 64 [2021-12-06 22:08:27,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:27,045 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2021-12-06 22:08:27,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:08:27,045 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2021-12-06 22:08:27,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 22:08:27,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:27,046 INFO L514 BasicCegarLoop]: trace histogram [16, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:27,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-12-06 22:08:27,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:27,247 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:27,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:27,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1477848750, now seen corresponding path program 1 times [2021-12-06 22:08:27,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:27,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905093969] [2021-12-06 22:08:27,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:27,250 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:27,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:27,253 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:27,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-12-06 22:08:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:27,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 22:08:27,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:27,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:08:27,674 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-06 22:08:27,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:08:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-06 22:08:27,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:27,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905093969] [2021-12-06 22:08:27,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905093969] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:08:27,878 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:08:27,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2021-12-06 22:08:27,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839070769] [2021-12-06 22:08:27,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:08:27,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 22:08:27,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:27,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 22:08:27,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:08:27,879 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:08:28,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:28,215 INFO L93 Difference]: Finished difference Result 128 states and 133 transitions. [2021-12-06 22:08:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 22:08:28,216 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 68 [2021-12-06 22:08:28,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:28,217 INFO L225 Difference]: With dead ends: 128 [2021-12-06 22:08:28,217 INFO L226 Difference]: Without dead ends: 128 [2021-12-06 22:08:28,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 114 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:08:28,217 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 152 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:28,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 385 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 234 Invalid, 0 Unknown, 52 Unchecked, 0.3s Time] [2021-12-06 22:08:28,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-12-06 22:08:28,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 115. [2021-12-06 22:08:28,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 98 states have (on average 1.1020408163265305) internal successors, (108), 104 states have internal predecessors, (108), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-06 22:08:28,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 121 transitions. [2021-12-06 22:08:28,221 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 121 transitions. Word has length 68 [2021-12-06 22:08:28,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:28,221 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 121 transitions. [2021-12-06 22:08:28,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:08:28,221 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 121 transitions. [2021-12-06 22:08:28,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 22:08:28,221 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:28,222 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:28,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-12-06 22:08:28,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:28,423 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:28,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:28,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1729031655, now seen corresponding path program 1 times [2021-12-06 22:08:28,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:28,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296705506] [2021-12-06 22:08:28,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:28,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:28,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:28,428 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:28,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-06 22:08:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:28,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 78 conjunts are in the unsatisfiable core [2021-12-06 22:08:28,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:28,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:28,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:28,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:28,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:28,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:28,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:28,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 38 [2021-12-06 22:08:33,142 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2206 (_ BitVec 8)) (v_ArrVal_2208 (_ BitVec 8))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2206) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2208)))) is different from true [2021-12-06 22:08:33,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:33,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:33,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:33,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 32 [2021-12-06 22:08:33,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:33,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:33,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:33,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:33,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:33,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:33,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:08:33,433 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:08:33,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 69 [2021-12-06 22:08:33,625 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:08:33,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 23 [2021-12-06 22:08:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-06 22:08:33,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:08:33,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:33,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296705506] [2021-12-06 22:08:33,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296705506] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:33,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:33,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-12-06 22:08:33,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068301741] [2021-12-06 22:08:33,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:33,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 22:08:33,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:33,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 22:08:33,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=591, Unknown=2, NotChecked=48, Total=702 [2021-12-06 22:08:33,828 INFO L87 Difference]: Start difference. First operand 115 states and 121 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 24 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:08:34,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:34,642 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2021-12-06 22:08:34,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 22:08:34,644 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 24 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 67 [2021-12-06 22:08:34,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:34,644 INFO L225 Difference]: With dead ends: 100 [2021-12-06 22:08:34,644 INFO L226 Difference]: Without dead ends: 100 [2021-12-06 22:08:34,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=134, Invalid=1128, Unknown=2, NotChecked=68, Total=1332 [2021-12-06 22:08:34,645 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 35 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 307 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:34,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 965 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 240 Invalid, 0 Unknown, 307 Unchecked, 0.4s Time] [2021-12-06 22:08:34,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-12-06 22:08:34,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2021-12-06 22:08:34,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 83 states have (on average 1.0843373493975903) internal successors, (90), 87 states have internal predecessors, (90), 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) [2021-12-06 22:08:34,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2021-12-06 22:08:34,648 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 67 [2021-12-06 22:08:34,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:34,648 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2021-12-06 22:08:34,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 24 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 22:08:34,648 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2021-12-06 22:08:34,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 22:08:34,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:34,649 INFO L514 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:34,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-12-06 22:08:34,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:34,850 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_kobject_putErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:34,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:34,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1342862122, now seen corresponding path program 1 times [2021-12-06 22:08:34,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:34,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003882159] [2021-12-06 22:08:34,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:34,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:34,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:34,856 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:34,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-12-06 22:08:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:35,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 22:08:35,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:35,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:08:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-06 22:08:35,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:08:35,573 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-06 22:08:35,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:08:35,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003882159] [2021-12-06 22:08:35,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003882159] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:08:35,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:08:35,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2021-12-06 22:08:35,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238580780] [2021-12-06 22:08:35,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:08:35,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 22:08:35,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:08:35,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:08:35,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:08:35,575 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:08:35,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:35,950 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2021-12-06 22:08:35,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:08:35,950 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 74 [2021-12-06 22:08:35,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:35,953 INFO L225 Difference]: With dead ends: 102 [2021-12-06 22:08:35,953 INFO L226 Difference]: Without dead ends: 102 [2021-12-06 22:08:35,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 127 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-12-06 22:08:35,954 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 68 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:35,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 414 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 241 Invalid, 0 Unknown, 47 Unchecked, 0.3s Time] [2021-12-06 22:08:35,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-06 22:08:35,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 95. [2021-12-06 22:08:35,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 83 states have (on average 1.072289156626506) internal successors, (89), 86 states have internal predecessors, (89), 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) [2021-12-06 22:08:35,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2021-12-06 22:08:35,956 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 74 [2021-12-06 22:08:35,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:35,956 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2021-12-06 22:08:35,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:08:35,956 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2021-12-06 22:08:35,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-06 22:08:35,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:35,957 INFO L514 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:35,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-12-06 22:08:36,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:08:36,158 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:08:36,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:36,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1943196067, now seen corresponding path program 1 times [2021-12-06 22:08:36,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:08:36,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156081911] [2021-12-06 22:08:36,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:36,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:08:36,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:08:36,164 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:08:36,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-06 22:08:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:36,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 114 conjunts are in the unsatisfiable core [2021-12-06 22:08:36,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:08:36,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:36,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:36,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:36,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:36,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:36,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:36,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:36,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:36,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:36,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:08:36,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:08:36,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2021-12-06 22:08:41,041 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2561 (_ BitVec 8)) (v_ArrVal_2564 (_ BitVec 8))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2561) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2564)))) is different from true [2021-12-06 22:08:41,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,063 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:08:41,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 71 [2021-12-06 22:08:41,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:08:41,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:08:41,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:08:41,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:41,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:08:41,419 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:08:41,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 193 treesize of output 165 [2021-12-06 22:08:42,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:42,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:42,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:42,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:42,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:42,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:08:42,057 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:08:42,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 137 [2021-12-06 22:08:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-12-06 22:08:46,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:09:11,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:09:11,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156081911] [2021-12-06 22:09:11,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156081911] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:09:11,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1937817797] [2021-12-06 22:09:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:09:11,781 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 22:09:11,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 22:09:11,781 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 22:09:11,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-12-06 22:09:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:13,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 131 conjunts are in the unsatisfiable core [2021-12-06 22:09:13,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:09:15,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:15,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:15,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:15,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:15,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:15,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:15,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:15,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:15,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:15,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:09:15,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:09:15,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2021-12-06 22:09:18,118 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2765 (_ BitVec 8)) (v_ArrVal_2561 (_ BitVec 8))) (= (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2561) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2765)) |c_#memory_int|)) is different from true [2021-12-06 22:09:18,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,143 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:09:18,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 71 [2021-12-06 22:09:18,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:09:18,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:09:18,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:09:18,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:09:18,278 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:09:18,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 193 treesize of output 165 [2021-12-06 22:09:18,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:09:18,464 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:09:18,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 137 [2021-12-06 22:09:18,544 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 22:09:18,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:09:20,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1937817797] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:09:20,513 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:09:20,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 43] total 44 [2021-12-06 22:09:20,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897877991] [2021-12-06 22:09:20,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:09:20,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-06 22:09:20,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:09:20,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-06 22:09:20,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=3825, Unknown=13, NotChecked=250, Total=4290 [2021-12-06 22:09:20,515 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand has 44 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 41 states have internal predecessors, (69), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 22:09:24,643 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2561 (_ BitVec 8)) (v_ArrVal_2564 (_ BitVec 8))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2561) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2564)))) (exists ((v_ArrVal_2765 (_ BitVec 8)) (v_ArrVal_2561 (_ BitVec 8))) (= (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2561) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2765)) |c_#memory_int|))) is different from true [2021-12-06 22:10:08,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:08,880 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2021-12-06 22:10:08,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-06 22:10:08,881 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 41 states have internal predecessors, (69), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 79 [2021-12-06 22:10:08,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:08,882 INFO L225 Difference]: With dead ends: 99 [2021-12-06 22:10:08,882 INFO L226 Difference]: Without dead ends: 95 [2021-12-06 22:10:08,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 172 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1771 ImplicationChecksByTransitivity, 84.3s TimeCoverageRelationStatistics Valid=522, Invalid=7297, Unknown=25, NotChecked=528, Total=8372 [2021-12-06 22:10:08,884 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 121 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 240 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:08,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 926 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1254 Invalid, 0 Unknown, 240 Unchecked, 2.7s Time] [2021-12-06 22:10:08,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-06 22:10:08,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-12-06 22:10:08,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 86 states have internal predecessors, (88), 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) [2021-12-06 22:10:08,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2021-12-06 22:10:08,887 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 79 [2021-12-06 22:10:08,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:08,887 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2021-12-06 22:10:08,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 41 states have internal predecessors, (69), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 22:10:08,887 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2021-12-06 22:10:08,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-06 22:10:08,887 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:08,888 INFO L514 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:08,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2021-12-06 22:10:09,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-12-06 22:10:09,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:10:09,290 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:10:09,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:09,291 INFO L85 PathProgramCache]: Analyzing trace with hash -826672710, now seen corresponding path program 1 times [2021-12-06 22:10:09,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:10:09,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973826149] [2021-12-06 22:10:09,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:09,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:10:09,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:10:09,293 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:10:09,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-12-06 22:10:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:09,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 156 conjunts are in the unsatisfiable core [2021-12-06 22:10:09,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:10:09,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:10:09,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:09,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:09,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:09,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:09,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:09,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:09,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:09,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:09,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:09,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:10,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:10,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:10,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:10,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:10,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:10,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:10,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:10,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:10,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:10,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:10,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:10,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 22:10:16,321 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3001 (_ BitVec 32)) (v_ArrVal_2999 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2999) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3001)))) is different from true [2021-12-06 22:10:16,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:16,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:16,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:16,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2021-12-06 22:10:16,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:16,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:16,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:16,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:16,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:16,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:16,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:16,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:16,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:16,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:16,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 22:10:18,758 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3010 (_ BitVec 32)) (v_ArrVal_3009 (_ BitVec 32)) (v_ArrVal_3007 (_ BitVec 32)) (v_ArrVal_3008 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_3007) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_3009) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv14 32)) v_ArrVal_3008) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_3010)) |c_#memory_$Pointer$.offset|)) is different from true [2021-12-06 22:10:18,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:18,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:18,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:18,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:18,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:18,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:18,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:18,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:18,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:18,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:18,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 22:10:19,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:19,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:19,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:19,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:19,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:19,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:19,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:19,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:19,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:19,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 45 [2021-12-06 22:10:19,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:10:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-06 22:10:19,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:10:20,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:10:20,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973826149] [2021-12-06 22:10:20,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973826149] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:10:20,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1710788431] [2021-12-06 22:10:20,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:20,436 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 22:10:20,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 22:10:20,436 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 22:10:20,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-12-06 22:10:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:21,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 152 conjunts are in the unsatisfiable core [2021-12-06 22:10:21,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:10:21,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:10:21,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:21,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:21,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:21,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:21,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:21,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:21,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:21,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:21,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:21,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:21,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:21,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:21,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:21,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:21,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:21,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:21,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 22:10:25,242 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2999 (_ BitVec 32)) (v_ArrVal_3241 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2999) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3241)) |c_#memory_$Pointer$.offset|)) is different from true [2021-12-06 22:10:25,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:25,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:25,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:25,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2021-12-06 22:10:25,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:25,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:25,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:25,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:25,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:25,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:25,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:25,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:25,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:25,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:25,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 22:10:27,382 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3250 (_ BitVec 32)) (v_ArrVal_3249 (_ BitVec 32)) (v_ArrVal_3247 (_ BitVec 32)) (v_ArrVal_3248 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_3249) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_3250) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv14 32)) v_ArrVal_3247) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_3248)))) is different from true [2021-12-06 22:10:27,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:27,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:27,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:27,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:27,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:27,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:27,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:27,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:27,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:27,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:27,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 22:10:27,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 39 [2021-12-06 22:10:27,660 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:10:27,660 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 15 treesize of output 15 [2021-12-06 22:10:27,768 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-06 22:10:27,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:10:29,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1710788431] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:10:29,183 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:10:29,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 44] total 50 [2021-12-06 22:10:29,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964322388] [2021-12-06 22:10:29,183 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:10:29,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-12-06 22:10:29,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:10:29,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-12-06 22:10:29,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=3012, Unknown=5, NotChecked=452, Total=3660 [2021-12-06 22:10:29,185 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 51 states, 50 states have (on average 1.84) internal successors, (92), 48 states have internal predecessors, (92), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:10:34,597 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3001 (_ BitVec 32)) (v_ArrVal_2999 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2999) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3001)))) (exists ((v_ArrVal_2999 (_ BitVec 32)) (v_ArrVal_3241 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2999) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3241)) |c_#memory_$Pointer$.offset|))) is different from true [2021-12-06 22:10:42,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:42,281 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2021-12-06 22:10:42,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-12-06 22:10:42,282 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.84) internal successors, (92), 48 states have internal predecessors, (92), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 80 [2021-12-06 22:10:42,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:42,282 INFO L225 Difference]: With dead ends: 94 [2021-12-06 22:10:42,283 INFO L226 Difference]: Without dead ends: 94 [2021-12-06 22:10:42,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 26.1s TimeCoverageRelationStatistics Valid=427, Invalid=6896, Unknown=7, NotChecked=860, Total=8190 [2021-12-06 22:10:42,286 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 157 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 2195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 401 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:42,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 934 Invalid, 2195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1726 Invalid, 0 Unknown, 401 Unchecked, 3.2s Time] [2021-12-06 22:10:42,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-06 22:10:42,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-12-06 22:10:42,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 83 states have (on average 1.0481927710843373) internal successors, (87), 85 states have internal predecessors, (87), 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) [2021-12-06 22:10:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2021-12-06 22:10:42,289 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 80 [2021-12-06 22:10:42,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:42,290 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2021-12-06 22:10:42,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.84) internal successors, (92), 48 states have internal predecessors, (92), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:10:42,290 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2021-12-06 22:10:42,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-06 22:10:42,290 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:42,290 INFO L514 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:42,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2021-12-06 22:10:42,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-12-06 22:10:42,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:10:42,692 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_kobject_putErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:10:42,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:42,693 INFO L85 PathProgramCache]: Analyzing trace with hash 142949917, now seen corresponding path program 1 times [2021-12-06 22:10:42,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:10:42,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509137505] [2021-12-06 22:10:42,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:42,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:10:42,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:10:42,698 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:10:42,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-12-06 22:10:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:43,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 156 conjunts are in the unsatisfiable core [2021-12-06 22:10:43,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:10:43,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:10:43,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:43,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:43,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:43,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:43,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:43,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:43,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:43,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:43,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:43,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:43,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:43,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:43,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:43,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:43,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:43,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:43,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:43,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:43,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:43,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:43,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:43,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:43,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:43,802 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 21 treesize of output 20 [2021-12-06 22:10:43,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:43,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:43,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:43,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:43,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:43,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:44,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:44,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:44,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:44,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:44,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:44,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:44,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:44,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:44,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:44,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:44,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 22:10:49,894 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3480 (_ BitVec 32)) (v_ArrVal_3478 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3478) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3480)) |c_#memory_$Pointer$.base|)) is different from true [2021-12-06 22:10:49,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:49,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:49,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:49,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2021-12-06 22:10:50,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:50,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:50,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:50,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:50,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:50,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:50,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:50,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:50,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:50,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:50,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 22:10:52,375 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3488 (_ BitVec 32)) (v_ArrVal_3490 (_ BitVec 32)) (v_ArrVal_3491 (_ BitVec 32)) (v_ArrVal_3489 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_3491) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_3489) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv14 32)) v_ArrVal_3490) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_3488)) |c_#memory_$Pointer$.base|)) is different from true [2021-12-06 22:10:52,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 22:10:52,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:52,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 45 [2021-12-06 22:10:52,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:10:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-06 22:10:52,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:10:54,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:10:54,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509137505] [2021-12-06 22:10:54,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509137505] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:10:54,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1486871206] [2021-12-06 22:10:54,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:54,052 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 22:10:54,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 22:10:54,053 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 22:10:54,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2021-12-06 22:10:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:54,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 152 conjunts are in the unsatisfiable core [2021-12-06 22:10:54,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:10:54,760 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 14 treesize of output 10 [2021-12-06 22:10:54,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:54,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:54,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:54,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:54,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:54,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:54,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:54,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:54,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:54,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:54,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:54,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:54,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:54,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:54,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:54,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:54,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:54,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:54,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:54,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:54,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:54,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:54,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:54,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-06 22:10:55,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:55,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:55,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:55,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:55,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:55,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:55,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:55,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:55,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:55,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:55,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:55,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:55,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:55,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:55,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:55,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:55,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 22:10:58,758 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3478 (_ BitVec 32)) (v_ArrVal_3721 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3478) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3721)) |c_#memory_$Pointer$.base|)) is different from true [2021-12-06 22:10:58,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:58,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:58,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:58,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2021-12-06 22:10:58,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:58,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:58,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:58,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:58,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:58,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:58,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:58,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:58,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:58,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:58,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 22:11:00,912 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3730 (_ BitVec 32)) (v_ArrVal_3728 (_ BitVec 32)) (v_ArrVal_3729 (_ BitVec 32)) (v_ArrVal_3731 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_3731) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_3729) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv14 32)) v_ArrVal_3730) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_3728)) |c_#memory_$Pointer$.base|)) is different from true [2021-12-06 22:11:00,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:11:00,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:11:00,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:11:00,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:11:00,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:11:00,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:11:00,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:11:00,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:11:00,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:11:00,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:11:00,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-06 22:11:01,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 39 [2021-12-06 22:11:01,233 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:11:01,233 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 15 treesize of output 15 [2021-12-06 22:11:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-06 22:11:01,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:11:03,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1486871206] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:11:03,017 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:11:03,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 46] total 52 [2021-12-06 22:11:03,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023663413] [2021-12-06 22:11:03,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:11:03,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-06 22:11:03,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:11:03,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-06 22:11:03,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=3109, Unknown=5, NotChecked=460, Total=3782 [2021-12-06 22:11:03,019 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 52 states, 52 states have (on average 1.7884615384615385) internal successors, (93), 49 states have internal predecessors, (93), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:11:07,721 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3478 (_ BitVec 32)) (v_ArrVal_3721 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3478) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3721)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_3480 (_ BitVec 32)) (v_ArrVal_3478 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3478) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3480)) |c_#memory_$Pointer$.base|))) is different from true [2021-12-06 22:11:15,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:11:15,307 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2021-12-06 22:11:15,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-06 22:11:15,308 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.7884615384615385) internal successors, (93), 49 states have internal predecessors, (93), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 81 [2021-12-06 22:11:15,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:11:15,309 INFO L225 Difference]: With dead ends: 90 [2021-12-06 22:11:15,309 INFO L226 Difference]: Without dead ends: 89 [2021-12-06 22:11:15,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 132 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1463 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=363, Invalid=4906, Unknown=7, NotChecked=730, Total=6006 [2021-12-06 22:11:15,311 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 128 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 1664 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 2092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 378 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:11:15,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 828 Invalid, 2092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1664 Invalid, 0 Unknown, 378 Unchecked, 3.3s Time] [2021-12-06 22:11:15,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-06 22:11:15,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-12-06 22:11:15,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 80 states have (on average 1.0125) internal successors, (81), 80 states have internal predecessors, (81), 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) [2021-12-06 22:11:15,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2021-12-06 22:11:15,313 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 81 [2021-12-06 22:11:15,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:11:15,313 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2021-12-06 22:11:15,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.7884615384615385) internal successors, (93), 49 states have internal predecessors, (93), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 22:11:15,313 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2021-12-06 22:11:15,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-06 22:11:15,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:11:15,314 INFO L514 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:11:15,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-12-06 22:11:15,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2021-12-06 22:11:15,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 22:11:15,714 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATION (and 22 more)] === [2021-12-06 22:11:15,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:11:15,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2138038455, now seen corresponding path program 1 times [2021-12-06 22:11:15,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:11:15,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666114243] [2021-12-06 22:11:15,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:11:15,715 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:11:15,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:11:15,716 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:11:15,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-12-06 22:11:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:16,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 22:11:16,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:11:16,383 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 0 case distinctions, treesize of input 18 treesize of output 15 [2021-12-06 22:11:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-12-06 22:11:18,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:11:23,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:11:23,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666114243] [2021-12-06 22:11:23,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666114243] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:11:23,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1542265306] [2021-12-06 22:11:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:11:23,508 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 22:11:23,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 22:11:23,509 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 22:11:23,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2021-12-06 22:11:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:24,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-06 22:11:24,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:11:24,663 INFO L354 Elim1Store]: treesize reduction 16, result has 42.9 percent of original size [2021-12-06 22:11:24,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-12-06 22:11:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-12-06 22:11:25,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:11:29,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1542265306] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:11:29,548 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:11:29,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2021-12-06 22:11:29,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296119406] [2021-12-06 22:11:29,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:11:29,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 22:11:29,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:11:29,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 22:11:29,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=773, Unknown=3, NotChecked=0, Total=870 [2021-12-06 22:11:29,550 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand has 21 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 6 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2021-12-06 22:11:29,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:11:29,798 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2021-12-06 22:11:29,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:11:29,798 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 6 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 88 [2021-12-06 22:11:29,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:11:29,799 INFO L225 Difference]: With dead ends: 88 [2021-12-06 22:11:29,799 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 22:11:29,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 303 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 5 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=122, Invalid=997, Unknown=3, NotChecked=0, Total=1122 [2021-12-06 22:11:29,799 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 37 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:11:29,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 410 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 113 Unchecked, 0.1s Time] [2021-12-06 22:11:29,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 22:11:29,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 22:11:29,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:11:29,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 22:11:29,800 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 88 [2021-12-06 22:11:29,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:11:29,800 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:11:29,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 6 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2021-12-06 22:11:29,800 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 22:11:29,800 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 22:11:29,802 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE (24 of 25 remaining) [2021-12-06 22:11:29,802 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE (23 of 25 remaining) [2021-12-06 22:11:29,802 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION (22 of 25 remaining) [2021-12-06 22:11:29,802 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION (21 of 25 remaining) [2021-12-06 22:11:29,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION (20 of 25 remaining) [2021-12-06 22:11:29,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION (19 of 25 remaining) [2021-12-06 22:11:29,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION (18 of 25 remaining) [2021-12-06 22:11:29,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION (17 of 25 remaining) [2021-12-06 22:11:29,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (16 of 25 remaining) [2021-12-06 22:11:29,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (15 of 25 remaining) [2021-12-06 22:11:29,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION (14 of 25 remaining) [2021-12-06 22:11:29,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION (13 of 25 remaining) [2021-12-06 22:11:29,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION (12 of 25 remaining) [2021-12-06 22:11:29,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr0REQUIRES_VIOLATION (11 of 25 remaining) [2021-12-06 22:11:29,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr1REQUIRES_VIOLATION (10 of 25 remaining) [2021-12-06 22:11:29,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr2REQUIRES_VIOLATION (9 of 25 remaining) [2021-12-06 22:11:29,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr3REQUIRES_VIOLATION (8 of 25 remaining) [2021-12-06 22:11:29,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr4REQUIRES_VIOLATION (7 of 25 remaining) [2021-12-06 22:11:29,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr5REQUIRES_VIOLATION (6 of 25 remaining) [2021-12-06 22:11:29,803 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr6ASSERT_VIOLATIONMEMORY_FREE (5 of 25 remaining) [2021-12-06 22:11:29,804 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr7ASSERT_VIOLATIONMEMORY_FREE (4 of 25 remaining) [2021-12-06 22:11:29,804 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr8ASSERT_VIOLATIONMEMORY_FREE (3 of 25 remaining) [2021-12-06 22:11:29,804 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE (2 of 25 remaining) [2021-12-06 22:11:29,804 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr10ASSERT_VIOLATIONMEMORY_FREE (1 of 25 remaining) [2021-12-06 22:11:29,804 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr11ASSERT_VIOLATIONMEMORY_FREE (0 of 25 remaining) [2021-12-06 22:11:29,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2021-12-06 22:11:30,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-12-06 22:11:30,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:11:30,211 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:11:30,212 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 22:11:30,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 10:11:30 BoogieIcfgContainer [2021-12-06 22:11:30,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 22:11:30,215 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 22:11:30,215 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 22:11:30,215 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 22:11:30,215 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:08:09" (3/4) ... [2021-12-06 22:11:30,218 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 22:11:30,223 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2021-12-06 22:11:30,223 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure LDV_INIT_LIST_HEAD [2021-12-06 22:11:30,223 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_put [2021-12-06 22:11:30,228 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2021-12-06 22:11:30,229 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-06 22:11:30,229 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-06 22:11:30,229 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 22:11:30,261 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 22:11:30,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 22:11:30,262 INFO L158 Benchmark]: Toolchain (without parser) took 202243.16ms. Allocated memory was 58.7MB in the beginning and 92.3MB in the end (delta: 33.6MB). Free memory was 35.2MB in the beginning and 34.1MB in the end (delta: 1.2MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. [2021-12-06 22:11:30,262 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory is still 40.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:11:30,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 485.53ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 34.9MB in the beginning and 40.0MB in the end (delta: -5.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 22:11:30,262 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.42ms. Allocated memory is still 75.5MB. Free memory was 40.0MB in the beginning and 37.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:11:30,263 INFO L158 Benchmark]: Boogie Preprocessor took 37.09ms. Allocated memory is still 75.5MB. Free memory was 37.2MB in the beginning and 57.0MB in the end (delta: -19.8MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2021-12-06 22:11:30,263 INFO L158 Benchmark]: RCFGBuilder took 440.01ms. Allocated memory is still 75.5MB. Free memory was 57.0MB in the beginning and 37.8MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-06 22:11:30,263 INFO L158 Benchmark]: TraceAbstraction took 201187.41ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 37.4MB in the beginning and 38.6MB in the end (delta: -1.2MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-12-06 22:11:30,263 INFO L158 Benchmark]: Witness Printer took 46.60ms. Allocated memory is still 92.3MB. Free memory was 38.6MB in the beginning and 34.1MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 22:11:30,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory is still 40.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 485.53ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 34.9MB in the beginning and 40.0MB in the end (delta: -5.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.42ms. Allocated memory is still 75.5MB. Free memory was 40.0MB in the beginning and 37.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.09ms. Allocated memory is still 75.5MB. Free memory was 37.2MB in the beginning and 57.0MB in the end (delta: -19.8MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * RCFGBuilder took 440.01ms. Allocated memory is still 75.5MB. Free memory was 57.0MB in the beginning and 37.8MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 201187.41ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 37.4MB in the beginning and 38.6MB in the end (delta: -1.2MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * Witness Printer took 46.60ms. Allocated memory is still 92.3MB. Free memory was 38.6MB in the beginning and 34.1MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 682]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 682]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 658]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 658]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 660]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 660]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 764]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 540]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 540]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 666]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 666]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 668]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 668]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 699]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 699]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 700]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 700]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 700]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 702]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 702]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 702]: free always succeeds For all program executions holds that free always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 90 locations, 25 error locations. Started 1 CEGAR loops. OverallTime: 201.1s, OverallIterations: 33, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 80.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2566 SdHoareTripleChecker+Valid, 14.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2543 mSDsluCounter, 16164 SdHoareTripleChecker+Invalid, 12.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1637 IncrementalHoareTripleChecker+Unchecked, 13705 mSDsCounter, 374 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8691 IncrementalHoareTripleChecker+Invalid, 10702 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 374 mSolverCounterUnsat, 2459 mSDtfsCounter, 8691 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2380 GetRequests, 1725 SyntacticMatches, 41 SemanticMatches, 614 ConstructedPredicates, 14 IntricatePredicates, 5 DeprecatedPredicates, 5997 ImplicationChecksByTransitivity, 155.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=27, InterpolantAutomatonStates: 437, 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, 33 MinimizatonAttempts, 304 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 6.3s SatisfiabilityAnalysisTime, 102.5s InterpolantComputationTime, 1724 NumberOfCodeBlocks, 1694 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 1889 ConstructedInterpolants, 228 QuantifiedInterpolants, 22718 SizeOfPredicates, 778 NumberOfNonLiveVariables, 11005 ConjunctsInSsa, 1408 ConjunctsInUnsatCore, 42 InterpolantComputations, 24 PerfectInterpolantSequences, 2959/3841 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 - AllSpecificationsHoldResult: All specifications hold 25 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-06 22:11:30,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_746510be-a847-4465-9097-12cbd4019612/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE