./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8 --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 5fd80c822f4c545ea9a48882a667e8fa2630e37e10bf15ea7aea35e48f16af74 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 14:04:32,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:04:32,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:04:32,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:04:32,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:04:32,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:04:32,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:04:32,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:04:32,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:04:32,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:04:32,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:04:32,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:04:32,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:04:32,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:04:32,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:04:32,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:04:32,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:04:32,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:04:32,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:04:32,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:04:32,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:04:32,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:04:32,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:04:32,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:04:32,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:04:32,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:04:32,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:04:32,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:04:32,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:04:32,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:04:32,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:04:32,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:04:32,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:04:32,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:04:32,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:04:32,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:04:32,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:04:32,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:04:32,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:04:32,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:04:32,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:04:32,464 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 14:04:32,478 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:04:32,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:04:32,478 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:04:32,478 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:04:32,479 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:04:32,479 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:04:32,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:04:32,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:04:32,485 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:04:32,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:04:32,486 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:04:32,486 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 14:04:32,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:04:32,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:04:32,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:04:32,486 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 14:04:32,486 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 14:04:32,486 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 14:04:32,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:04:32,487 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 14:04:32,487 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:04:32,487 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:04:32,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:04:32,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:04:32,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:04:32,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:04:32,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:04:32,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:04:32,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:04:32,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:04:32,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:04:32,488 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:04:32,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:04:32,488 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:04:32,488 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fd80c822f4c545ea9a48882a667e8fa2630e37e10bf15ea7aea35e48f16af74 [2022-12-13 14:04:32,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:04:32,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:04:32,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:04:32,701 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:04:32,701 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:04:32,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i [2022-12-13 14:04:35,223 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:04:35,417 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:04:35,418 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i [2022-12-13 14:04:35,427 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/data/a49eb0a36/7b8750ac19c64c04854fd48952d890ad/FLAG7f8af388a [2022-12-13 14:04:35,803 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/data/a49eb0a36/7b8750ac19c64c04854fd48952d890ad [2022-12-13 14:04:35,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:04:35,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:04:35,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:04:35,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:04:35,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:04:35,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:04:35" (1/1) ... [2022-12-13 14:04:35,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e2e44bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:35, skipping insertion in model container [2022-12-13 14:04:35,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:04:35" (1/1) ... [2022-12-13 14:04:35,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:04:35,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:04:36,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:04:36,073 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-13 14:04:36,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@33dfd80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:36, skipping insertion in model container [2022-12-13 14:04:36,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:04:36,074 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 14:04:36,075 INFO L158 Benchmark]: Toolchain (without parser) took 268.82ms. Allocated memory is still 157.3MB. Free memory was 120.1MB in the beginning and 106.0MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 14:04:36,076 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 157.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:04:36,076 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.16ms. Allocated memory is still 157.3MB. Free memory was 120.1MB in the beginning and 106.0MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 14:04:36,077 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 157.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.16ms. Allocated memory is still 157.3MB. Free memory was 120.1MB in the beginning and 106.0MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. 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 of different sizes 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8 --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 5fd80c822f4c545ea9a48882a667e8fa2630e37e10bf15ea7aea35e48f16af74 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 14:04:37,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:04:37,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:04:37,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:04:37,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:04:37,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:04:37,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:04:37,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:04:37,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:04:37,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:04:37,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:04:37,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:04:37,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:04:37,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:04:37,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:04:37,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:04:37,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:04:37,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:04:37,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:04:37,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:04:37,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:04:37,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:04:37,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:04:37,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:04:37,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:04:37,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:04:37,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:04:37,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:04:37,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:04:37,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:04:37,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:04:37,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:04:37,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:04:37,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:04:37,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:04:37,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:04:37,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:04:37,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:04:37,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:04:37,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:04:37,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:04:37,468 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 14:04:37,499 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:04:37,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:04:37,500 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:04:37,500 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:04:37,500 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:04:37,501 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:04:37,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:04:37,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:04:37,502 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:04:37,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:04:37,502 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:04:37,502 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 14:04:37,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:04:37,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:04:37,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:04:37,503 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 14:04:37,503 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 14:04:37,503 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 14:04:37,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:04:37,503 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 14:04:37,504 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 14:04:37,504 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 14:04:37,504 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:04:37,504 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:04:37,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:04:37,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:04:37,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:04:37,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:04:37,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:04:37,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:04:37,505 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 14:04:37,505 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 14:04:37,505 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:04:37,506 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:04:37,506 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:04:37,506 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 14:04:37,506 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:04:37,506 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fd80c822f4c545ea9a48882a667e8fa2630e37e10bf15ea7aea35e48f16af74 [2022-12-13 14:04:37,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:04:37,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:04:37,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:04:37,757 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:04:37,757 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:04:37,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i [2022-12-13 14:04:40,315 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:04:40,518 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:04:40,518 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i [2022-12-13 14:04:40,529 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/data/15f2c4efc/64c05acf140c4bacbce7b19bdc4f31f4/FLAG2ad57e8ed [2022-12-13 14:04:40,878 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/data/15f2c4efc/64c05acf140c4bacbce7b19bdc4f31f4 [2022-12-13 14:04:40,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:04:40,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:04:40,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:04:40,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:04:40,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:04:40,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:04:40" (1/1) ... [2022-12-13 14:04:40,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a53f314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:40, skipping insertion in model container [2022-12-13 14:04:40,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:04:40" (1/1) ... [2022-12-13 14:04:40,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:04:40,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:04:41,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:04:41,232 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 14:04:41,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:04:41,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:04:41,289 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:04:41,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:04:41,385 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:04:41,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:41 WrapperNode [2022-12-13 14:04:41,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:04:41,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:04:41,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:04:41,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:04:41,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:41" (1/1) ... [2022-12-13 14:04:41,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:41" (1/1) ... [2022-12-13 14:04:41,430 INFO L138 Inliner]: procedures = 167, calls = 92, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 78 [2022-12-13 14:04:41,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:04:41,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:04:41,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:04:41,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:04:41,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:41" (1/1) ... [2022-12-13 14:04:41,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:41" (1/1) ... [2022-12-13 14:04:41,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:41" (1/1) ... [2022-12-13 14:04:41,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:41" (1/1) ... [2022-12-13 14:04:41,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:41" (1/1) ... [2022-12-13 14:04:41,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:41" (1/1) ... [2022-12-13 14:04:41,455 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:41" (1/1) ... [2022-12-13 14:04:41,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:41" (1/1) ... [2022-12-13 14:04:41,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:04:41,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:04:41,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:04:41,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:04:41,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:41" (1/1) ... [2022-12-13 14:04:41,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:04:41,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:04:41,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:04:41,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:04:41,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-13 14:04:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-13 14:04:41,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 14:04:41,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:04:41,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 14:04:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 14:04:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:04:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 14:04:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:04:41,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:04:41,625 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:04:41,627 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:04:41,930 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:04:41,935 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:04:41,935 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 14:04:41,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:04:41 BoogieIcfgContainer [2022-12-13 14:04:41,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:04:41,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:04:41,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:04:41,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:04:41,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:04:40" (1/3) ... [2022-12-13 14:04:41,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d35cd2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:04:41, skipping insertion in model container [2022-12-13 14:04:41,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:04:41" (2/3) ... [2022-12-13 14:04:41,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d35cd2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:04:41, skipping insertion in model container [2022-12-13 14:04:41,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:04:41" (3/3) ... [2022-12-13 14:04:41,945 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test10-2.i [2022-12-13 14:04:41,960 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:04:41,960 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2022-12-13 14:04:41,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:04:42,002 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f368f84, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:04:42,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2022-12-13 14:04:42,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 87 states have internal predecessors, (91), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 14:04:42,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 14:04:42,011 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:42,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:42,012 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:04:42,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:42,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1192529059, now seen corresponding path program 1 times [2022-12-13 14:04:42,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:04:42,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61358614] [2022-12-13 14:04:42,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:42,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:42,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:04:42,027 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:04:42,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 14:04:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:42,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:04:42,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:42,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:04:42,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:04:42,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:04:42,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61358614] [2022-12-13 14:04:42,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61358614] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:04:42,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:04:42,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:04:42,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120494614] [2022-12-13 14:04:42,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:04:42,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:04:42,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:04:42,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:04:42,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:04:42,183 INFO L87 Difference]: Start difference. First operand has 93 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 87 states have internal predecessors, (91), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2022-12-13 14:04:42,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:42,390 INFO L93 Difference]: Finished difference Result 180 states and 197 transitions. [2022-12-13 14:04:42,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:04:42,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 [2022-12-13 14:04:42,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:42,402 INFO L225 Difference]: With dead ends: 180 [2022-12-13 14:04:42,402 INFO L226 Difference]: Without dead ends: 176 [2022-12-13 14:04:42,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:04:42,406 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 83 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:42,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 485 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:04:42,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-12-13 14:04:42,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 95. [2022-12-13 14:04:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 46 states have (on average 2.0) internal successors, (92), 88 states have internal predecessors, (92), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 14:04:42,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2022-12-13 14:04:42,446 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 11 [2022-12-13 14:04:42,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:42,446 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2022-12-13 14:04:42,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2022-12-13 14:04:42,447 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2022-12-13 14:04:42,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 14:04:42,447 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:42,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:42,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:04:42,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:42,650 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:04:42,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:42,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2080032740, now seen corresponding path program 1 times [2022-12-13 14:04:42,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:04:42,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115671932] [2022-12-13 14:04:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:42,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:42,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:04:42,658 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:04:42,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 14:04:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:42,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:04:42,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:42,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:04:42,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:04:42,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:04:42,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115671932] [2022-12-13 14:04:42,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115671932] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:04:42,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:04:42,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:04:42,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840921964] [2022-12-13 14:04:42,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:04:42,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:04:42,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:04:42,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:04:42,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:04:42,837 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2022-12-13 14:04:43,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:43,060 INFO L93 Difference]: Finished difference Result 163 states and 179 transitions. [2022-12-13 14:04:43,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:04:43,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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 [2022-12-13 14:04:43,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:43,062 INFO L225 Difference]: With dead ends: 163 [2022-12-13 14:04:43,062 INFO L226 Difference]: Without dead ends: 161 [2022-12-13 14:04:43,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:04:43,063 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 63 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:43,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 281 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:04:43,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-12-13 14:04:43,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 91. [2022-12-13 14:04:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 43 states have (on average 2.046511627906977) internal successors, (88), 85 states have internal predecessors, (88), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 14:04:43,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2022-12-13 14:04:43,073 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 11 [2022-12-13 14:04:43,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:43,073 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2022-12-13 14:04:43,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2022-12-13 14:04:43,073 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2022-12-13 14:04:43,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 14:04:43,074 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:43,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:43,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 14:04:43,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:43,276 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:04:43,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:43,278 INFO L85 PathProgramCache]: Analyzing trace with hash -895923568, now seen corresponding path program 1 times [2022-12-13 14:04:43,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:04:43,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419378222] [2022-12-13 14:04:43,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:43,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:43,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:04:43,284 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:04:43,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 14:04:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:43,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 14:04:43,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:43,394 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:04:43,436 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-12-13 14:04:43,460 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 14:04:43,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-13 14:04:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-13 14:04:43,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:04:43,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:04:43,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419378222] [2022-12-13 14:04:43,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419378222] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:04:43,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:04:43,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2022-12-13 14:04:43,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328346047] [2022-12-13 14:04:43,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:04:43,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 14:04:43,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:04:43,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 14:04:43,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2022-12-13 14:04:43,637 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 14:04:44,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:44,033 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2022-12-13 14:04:44,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:04:44,034 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 15 [2022-12-13 14:04:44,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:44,035 INFO L225 Difference]: With dead ends: 102 [2022-12-13 14:04:44,035 INFO L226 Difference]: Without dead ends: 102 [2022-12-13 14:04:44,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72 [2022-12-13 14:04:44,036 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 66 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:44,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 198 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 318 Invalid, 0 Unknown, 98 Unchecked, 0.3s Time] [2022-12-13 14:04:44,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-12-13 14:04:44,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2022-12-13 14:04:44,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 51 states have (on average 1.9019607843137254) internal successors, (97), 90 states have internal predecessors, (97), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-12-13 14:04:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2022-12-13 14:04:44,044 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 15 [2022-12-13 14:04:44,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:44,045 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2022-12-13 14:04:44,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 14:04:44,045 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2022-12-13 14:04:44,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 14:04:44,045 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:44,045 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:44,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 14:04:44,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:44,248 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:04:44,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:44,249 INFO L85 PathProgramCache]: Analyzing trace with hash -895923567, now seen corresponding path program 1 times [2022-12-13 14:04:44,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:04:44,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669710093] [2022-12-13 14:04:44,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:44,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:44,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:04:44,254 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:04:44,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 14:04:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:44,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 14:04:44,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:44,446 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:04:44,539 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| |c_ldv_malloc_#in~size|) |c_#length|)) is different from true [2022-12-13 14:04:44,560 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 14:04:44,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 14:04:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-13 14:04:44,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:44,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:04:44,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669710093] [2022-12-13 14:04:44,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669710093] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:04:44,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1999818602] [2022-12-13 14:04:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:44,770 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:04:44,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:04:44,795 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:04:44,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-12-13 14:04:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:44,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 14:04:44,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:44,881 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:04:44,886 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:04:45,017 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_24 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_24) |c_#length|)))) is different from true [2022-12-13 14:04:45,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:45,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 14:04:45,055 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:04:45,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:04:45,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-13 14:04:45,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:45,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1999818602] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:04:45,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:04:45,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-12-13 14:04:45,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327621831] [2022-12-13 14:04:45,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:04:45,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 14:04:45,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:04:45,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 14:04:45,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=173, Unknown=2, NotChecked=54, Total=272 [2022-12-13 14:04:45,244 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 14:04:46,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:46,081 INFO L93 Difference]: Finished difference Result 198 states and 216 transitions. [2022-12-13 14:04:46,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 14:04:46,081 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 15 [2022-12-13 14:04:46,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:46,082 INFO L225 Difference]: With dead ends: 198 [2022-12-13 14:04:46,082 INFO L226 Difference]: Without dead ends: 198 [2022-12-13 14:04:46,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=224, Unknown=2, NotChecked=62, Total=342 [2022-12-13 14:04:46,083 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 101 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 294 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:46,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 307 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 654 Invalid, 0 Unknown, 294 Unchecked, 0.8s Time] [2022-12-13 14:04:46,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-12-13 14:04:46,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 133. [2022-12-13 14:04:46,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 84 states have (on average 1.9047619047619047) internal successors, (160), 123 states have internal predecessors, (160), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2022-12-13 14:04:46,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 181 transitions. [2022-12-13 14:04:46,089 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 181 transitions. Word has length 15 [2022-12-13 14:04:46,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:46,090 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 181 transitions. [2022-12-13 14:04:46,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 14:04:46,090 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 181 transitions. [2022-12-13 14:04:46,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 14:04:46,090 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:46,090 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:46,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2022-12-13 14:04:46,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 14:04:46,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:46,494 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:04:46,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:46,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1602092369, now seen corresponding path program 1 times [2022-12-13 14:04:46,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:04:46,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164118212] [2022-12-13 14:04:46,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:46,497 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:46,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:04:46,500 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:04:46,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 14:04:46,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:46,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 14:04:46,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:04:46,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:04:46,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:04:46,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164118212] [2022-12-13 14:04:46,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164118212] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:04:46,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:04:46,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:04:46,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35222161] [2022-12-13 14:04:46,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:04:46,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:04:46,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:04:46,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:04:46,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:04:46,582 INFO L87 Difference]: Start difference. First operand 133 states and 181 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-12-13 14:04:46,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:46,624 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2022-12-13 14:04:46,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:04:46,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 15 [2022-12-13 14:04:46,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:46,625 INFO L225 Difference]: With dead ends: 88 [2022-12-13 14:04:46,625 INFO L226 Difference]: Without dead ends: 86 [2022-12-13 14:04:46,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:04:46,626 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:46,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 332 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:04:46,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-12-13 14:04:46,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-12-13 14:04:46,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 80 states have internal predecessors, (83), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 14:04:46,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2022-12-13 14:04:46,630 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 15 [2022-12-13 14:04:46,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:46,631 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2022-12-13 14:04:46,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-12-13 14:04:46,631 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2022-12-13 14:04:46,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 14:04:46,632 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:46,632 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:46,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 14:04:46,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:46,833 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:04:46,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:46,834 INFO L85 PathProgramCache]: Analyzing trace with hash 684574475, now seen corresponding path program 1 times [2022-12-13 14:04:46,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:04:46,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562837473] [2022-12-13 14:04:46,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:46,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:46,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:04:46,836 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:04:46,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 14:04:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:46,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 14:04:46,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:46,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:04:46,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-12-13 14:04:46,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:04:46,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:04:46,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:04:46,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562837473] [2022-12-13 14:04:46,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562837473] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:04:46,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:04:46,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 14:04:46,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311586470] [2022-12-13 14:04:46,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:04:46,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:04:46,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:04:46,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:04:46,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:04:46,966 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 14:04:47,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:47,085 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2022-12-13 14:04:47,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:04:47,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-12-13 14:04:47,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:47,086 INFO L225 Difference]: With dead ends: 95 [2022-12-13 14:04:47,086 INFO L226 Difference]: Without dead ends: 95 [2022-12-13 14:04:47,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:04:47,087 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 6 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:47,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 381 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:04:47,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-12-13 14:04:47,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2022-12-13 14:04:47,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 52 states have (on average 1.6730769230769231) internal successors, (87), 83 states have internal predecessors, (87), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 14:04:47,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2022-12-13 14:04:47,092 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 20 [2022-12-13 14:04:47,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:47,093 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2022-12-13 14:04:47,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 14:04:47,093 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2022-12-13 14:04:47,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 14:04:47,093 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:47,093 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:47,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 14:04:47,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:47,295 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:04:47,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:47,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1122879988, now seen corresponding path program 1 times [2022-12-13 14:04:47,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:04:47,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464643705] [2022-12-13 14:04:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:47,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:47,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:04:47,301 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:04:47,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 14:04:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:47,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 14:04:47,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:47,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:04:47,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:04:47,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:04:47,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464643705] [2022-12-13 14:04:47,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464643705] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:04:47,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:04:47,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2022-12-13 14:04:47,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705912759] [2022-12-13 14:04:47,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:04:47,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 14:04:47,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:04:47,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 14:04:47,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:04:47,559 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 14:04:47,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:47,743 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2022-12-13 14:04:47,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:04:47,744 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 20 [2022-12-13 14:04:47,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:47,745 INFO L225 Difference]: With dead ends: 93 [2022-12-13 14:04:47,745 INFO L226 Difference]: Without dead ends: 91 [2022-12-13 14:04:47,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:04:47,745 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 189 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:47,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 231 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:04:47,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-12-13 14:04:47,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-12-13 14:04:47,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 83 states have internal predecessors, (87), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 14:04:47,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2022-12-13 14:04:47,748 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 20 [2022-12-13 14:04:47,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:47,749 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2022-12-13 14:04:47,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 14:04:47,749 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2022-12-13 14:04:47,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 14:04:47,749 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:47,749 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:47,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 14:04:47,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:47,951 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:04:47,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:47,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1782681151, now seen corresponding path program 1 times [2022-12-13 14:04:47,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:04:47,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142369468] [2022-12-13 14:04:47,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:47,954 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:47,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:04:47,957 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:04:47,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 14:04:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:48,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 14:04:48,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:48,125 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_entry_point_~a10~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base|) (_ bv0 1)))) is different from true [2022-12-13 14:04:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:04:48,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:48,224 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret44#1.base_18| (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_old_#valid#1| (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret44#1.base_18| (_ bv0 1))) (not (= (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret44#1.base_18|) (_ bv0 1))))) is different from false [2022-12-13 14:04:48,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:04:48,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142369468] [2022-12-13 14:04:48,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142369468] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:04:48,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [11309243] [2022-12-13 14:04:48,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:48,225 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:04:48,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:04:48,226 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:04:48,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-12-13 14:04:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:48,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 14:04:48,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:48,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:04:48,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:48,542 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret44#1.base_21| (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_old_#valid#1| (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret44#1.base_21| (_ bv0 1))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret44#1.base_21|))))) is different from false [2022-12-13 14:04:48,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [11309243] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:04:48,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:04:48,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-12-13 14:04:48,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566683879] [2022-12-13 14:04:48,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:04:48,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 14:04:48,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:04:48,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 14:04:48,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=126, Unknown=3, NotChecked=72, Total=240 [2022-12-13 14:04:48,544 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 14:04:49,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:49,390 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2022-12-13 14:04:49,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 14:04:49,390 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 23 [2022-12-13 14:04:49,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:49,391 INFO L225 Difference]: With dead ends: 138 [2022-12-13 14:04:49,391 INFO L226 Difference]: Without dead ends: 133 [2022-12-13 14:04:49,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 3 IntricatePredicates, 2 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=276, Unknown=3, NotChecked=108, Total=462 [2022-12-13 14:04:49,392 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 122 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:49,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 396 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 577 Invalid, 0 Unknown, 131 Unchecked, 0.7s Time] [2022-12-13 14:04:49,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-12-13 14:04:49,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 84. [2022-12-13 14:04:49,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 47 states have (on average 1.6808510638297873) internal successors, (79), 77 states have internal predecessors, (79), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 14:04:49,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2022-12-13 14:04:49,395 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 23 [2022-12-13 14:04:49,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:49,395 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2022-12-13 14:04:49,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 14:04:49,396 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2022-12-13 14:04:49,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 14:04:49,396 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:49,397 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:49,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-13 14:04:49,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2022-12-13 14:04:49,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:04:49,798 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:04:49,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:49,798 INFO L85 PathProgramCache]: Analyzing trace with hash -931351798, now seen corresponding path program 1 times [2022-12-13 14:04:49,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:04:49,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800840272] [2022-12-13 14:04:49,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:49,799 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:49,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:04:49,800 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:04:49,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-13 14:04:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:49,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 14:04:49,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:49,869 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:04:49,880 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:04:49,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 14:04:49,908 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-12-13 14:04:49,921 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 14:04:49,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-13 14:04:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2022-12-13 14:04:49,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:04:50,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:04:50,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800840272] [2022-12-13 14:04:50,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800840272] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:04:50,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:04:50,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2022-12-13 14:04:50,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521824299] [2022-12-13 14:04:50,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:04:50,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 14:04:50,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:04:50,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 14:04:50,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2022-12-13 14:04:50,037 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:04:50,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:50,351 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2022-12-13 14:04:50,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:04:50,351 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2022-12-13 14:04:50,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:50,352 INFO L225 Difference]: With dead ends: 92 [2022-12-13 14:04:50,352 INFO L226 Difference]: Without dead ends: 92 [2022-12-13 14:04:50,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=85, Unknown=1, NotChecked=18, Total=132 [2022-12-13 14:04:50,352 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 7 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:50,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 288 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 268 Invalid, 0 Unknown, 95 Unchecked, 0.3s Time] [2022-12-13 14:04:50,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-12-13 14:04:50,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2022-12-13 14:04:50,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 53 states have (on average 1.6226415094339623) internal successors, (86), 82 states have internal predecessors, (86), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-12-13 14:04:50,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2022-12-13 14:04:50,356 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 25 [2022-12-13 14:04:50,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:50,356 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2022-12-13 14:04:50,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:04:50,356 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2022-12-13 14:04:50,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 14:04:50,356 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:50,357 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:50,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-13 14:04:50,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:50,558 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:04:50,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:50,559 INFO L85 PathProgramCache]: Analyzing trace with hash -931351797, now seen corresponding path program 1 times [2022-12-13 14:04:50,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:04:50,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194155513] [2022-12-13 14:04:50,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:50,561 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:50,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:04:50,564 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:04:50,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-13 14:04:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:50,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 14:04:50,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:50,663 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:04:50,688 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:04:50,693 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:04:50,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-13 14:04:50,723 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:04:50,764 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| |c_ldv_malloc_#in~size|) |c_#length|)) is different from true [2022-12-13 14:04:50,777 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 14:04:50,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 14:04:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-12-13 14:04:50,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:50,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:04:50,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194155513] [2022-12-13 14:04:50,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194155513] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:04:50,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1288102240] [2022-12-13 14:04:50,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:50,951 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:04:50,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:04:50,951 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:04:50,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-12-13 14:04:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:51,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 14:04:51,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:51,062 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:04:51,067 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:04:51,122 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:04:51,128 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:04:51,191 INFO L350 Elim1Store]: Elim1 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 28 treesize of output 16 [2022-12-13 14:04:51,198 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:04:51,246 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_133 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_133))))) is different from true [2022-12-13 14:04:51,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:51,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 14:04:51,265 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:04:51,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:04:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-12-13 14:04:51,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:55,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1288102240] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:04:55,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:04:55,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-12-13 14:04:55,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485158840] [2022-12-13 14:04:55,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:04:55,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 14:04:55,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:04:55,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 14:04:55,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=230, Unknown=2, NotChecked=62, Total=342 [2022-12-13 14:04:55,416 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 14:04:56,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:56,127 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2022-12-13 14:04:56,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 14:04:56,128 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 25 [2022-12-13 14:04:56,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:56,128 INFO L225 Difference]: With dead ends: 93 [2022-12-13 14:04:56,128 INFO L226 Difference]: Without dead ends: 93 [2022-12-13 14:04:56,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=81, Invalid=387, Unknown=2, NotChecked=82, Total=552 [2022-12-13 14:04:56,129 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 11 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 190 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:56,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 534 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 500 Invalid, 0 Unknown, 190 Unchecked, 0.6s Time] [2022-12-13 14:04:56,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-12-13 14:04:56,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2022-12-13 14:04:56,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 53 states have (on average 1.6037735849056605) internal successors, (85), 82 states have internal predecessors, (85), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-12-13 14:04:56,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2022-12-13 14:04:56,132 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 25 [2022-12-13 14:04:56,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:56,132 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2022-12-13 14:04:56,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 14:04:56,132 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2022-12-13 14:04:56,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 14:04:56,132 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:56,132 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:56,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2022-12-13 14:04:56,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-13 14:04:56,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:56,535 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:04:56,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:56,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1436910423, now seen corresponding path program 1 times [2022-12-13 14:04:56,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:04:56,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543218746] [2022-12-13 14:04:56,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:56,537 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:56,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:04:56,540 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:04:56,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-13 14:04:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:56,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 14:04:56,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:56,626 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:04:56,629 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:04:56,644 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:04:56,646 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:04:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:04:56,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:04:56,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:04:56,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543218746] [2022-12-13 14:04:56,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543218746] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:04:56,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:04:56,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 14:04:56,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110526501] [2022-12-13 14:04:56,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:04:56,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:04:56,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:04:56,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:04:56,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:04:56,658 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 14:04:56,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:56,748 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2022-12-13 14:04:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:04:56,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-12-13 14:04:56,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:56,749 INFO L225 Difference]: With dead ends: 86 [2022-12-13 14:04:56,749 INFO L226 Difference]: Without dead ends: 82 [2022-12-13 14:04:56,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:04:56,750 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 2 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:56,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 375 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:04:56,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-12-13 14:04:56,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-12-13 14:04:56,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 75 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 14:04:56,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2022-12-13 14:04:56,752 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 25 [2022-12-13 14:04:56,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:56,752 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2022-12-13 14:04:56,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 14:04:56,752 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2022-12-13 14:04:56,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 14:04:56,753 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:56,753 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:56,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-13 14:04:56,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:56,954 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:04:56,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:56,955 INFO L85 PathProgramCache]: Analyzing trace with hash -412676065, now seen corresponding path program 1 times [2022-12-13 14:04:56,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:04:56,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119245188] [2022-12-13 14:04:56,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:56,957 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:56,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:04:56,960 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:04:56,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-13 14:04:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:57,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 14:04:57,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:57,107 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:04:57,109 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:04:57,133 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:04:57,155 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:04:57,211 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-13 14:04:57,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2022-12-13 14:04:57,269 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 14:04:57,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 46 [2022-12-13 14:04:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 14:04:57,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:57,361 INFO L321 Elim1Store]: treesize reduction 7, result has 68.2 percent of original size [2022-12-13 14:04:57,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 68 [2022-12-13 14:04:57,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:04:57,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119245188] [2022-12-13 14:04:57,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119245188] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:04:57,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2135440775] [2022-12-13 14:04:57,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:57,409 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:04:57,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:04:57,410 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:04:57,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-12-13 14:04:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:57,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 14:04:57,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:57,521 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:04:57,591 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:04:57,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:04:57,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:04:59,676 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_13| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_13| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_13|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_5|)))) is different from true [2022-12-13 14:04:59,747 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 14:04:59,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2022-12-13 14:04:59,788 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 15 [2022-12-13 14:04:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-12-13 14:04:59,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:59,805 INFO L321 Elim1Store]: treesize reduction 7, result has 58.8 percent of original size [2022-12-13 14:04:59,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 14:04:59,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2135440775] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:04:59,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:04:59,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2022-12-13 14:04:59,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439609311] [2022-12-13 14:04:59,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:04:59,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 14:04:59,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:04:59,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 14:04:59,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=475, Unknown=16, NotChecked=44, Total=600 [2022-12-13 14:04:59,862 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 14:05:11,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:05:11,038 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2022-12-13 14:05:11,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 14:05:11,038 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 28 [2022-12-13 14:05:11,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:05:11,039 INFO L225 Difference]: With dead ends: 121 [2022-12-13 14:05:11,039 INFO L226 Difference]: Without dead ends: 121 [2022-12-13 14:05:11,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=221, Invalid=1398, Unknown=25, NotChecked=78, Total=1722 [2022-12-13 14:05:11,041 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 207 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 14:05:11,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 770 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 858 Invalid, 0 Unknown, 99 Unchecked, 0.7s Time] [2022-12-13 14:05:11,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-12-13 14:05:11,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 85. [2022-12-13 14:05:11,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 50 states have (on average 1.6) internal successors, (80), 77 states have internal predecessors, (80), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 14:05:11,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2022-12-13 14:05:11,044 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 28 [2022-12-13 14:05:11,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:05:11,044 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2022-12-13 14:05:11,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 14:05:11,044 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2022-12-13 14:05:11,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 14:05:11,044 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:11,044 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:05:11,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2022-12-13 14:05:11,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-12-13 14:05:11,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:05:11,446 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:05:11,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:11,448 INFO L85 PathProgramCache]: Analyzing trace with hash -412676064, now seen corresponding path program 1 times [2022-12-13 14:05:11,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:05:11,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322315479] [2022-12-13 14:05:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:11,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:05:11,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:05:11,452 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:05:11,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-13 14:05:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:11,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 14:05:11,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:05:11,552 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:05:11,598 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:05:11,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:05:11,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:05:11,624 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:05:11,779 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 14:05:11,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2022-12-13 14:05:11,783 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 33 [2022-12-13 14:05:11,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-12-13 14:05:11,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-12-13 14:05:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:11,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:05:12,027 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 14:05:12,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 54 [2022-12-13 14:05:12,082 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_prenex_3 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_prenex_3) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))))) (and .cse0 (or (forall ((v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_223) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) |c_ULTIMATE.start_entry_point_#t~mem47#1.base|)) (and .cse0 (forall ((v_ArrVal_222 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_222) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))))) (forall ((v_ArrVal_222 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_222) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_#t~mem47#1.offset|))))) is different from false [2022-12-13 14:05:12,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:05:12,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322315479] [2022-12-13 14:05:12,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322315479] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:05:12,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1839011424] [2022-12-13 14:05:12,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:12,113 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:05:12,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:05:12,114 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:05:12,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-12-13 14:05:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:12,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 14:05:12,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:05:12,236 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:05:12,262 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:05:12,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:05:12,270 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:05:12,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:05:12,380 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 14:05:12,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2022-12-13 14:05:12,384 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 33 [2022-12-13 14:05:12,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-12-13 14:05:12,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-12-13 14:05:12,426 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:12,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:05:12,476 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 14:05:12,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 54 [2022-12-13 14:05:12,539 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ArrVal_248 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_248) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))))) (and .cse0 (or (and .cse0 (forall ((v_prenex_6 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_prenex_6) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) (_ bv4 32)) (_ bv0 32)))) (forall ((v_ArrVal_247 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_entry_point_#t~mem47#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_247) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) (forall ((v_prenex_6 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_prenex_6) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) (_ bv4 32)) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_#t~mem47#1.offset|))))) is different from false [2022-12-13 14:05:12,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1839011424] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:05:12,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:05:12,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2022-12-13 14:05:12,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594894993] [2022-12-13 14:05:12,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:05:12,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 14:05:12,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:05:12,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 14:05:12,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=178, Unknown=2, NotChecked=54, Total=272 [2022-12-13 14:05:12,571 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 14:05:15,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:05:15,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:05:15,530 INFO L93 Difference]: Finished difference Result 126 states and 129 transitions. [2022-12-13 14:05:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 14:05:15,531 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2022-12-13 14:05:15,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:05:15,531 INFO L225 Difference]: With dead ends: 126 [2022-12-13 14:05:15,531 INFO L226 Difference]: Without dead ends: 124 [2022-12-13 14:05:15,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=497, Unknown=2, NotChecked=94, Total=702 [2022-12-13 14:05:15,532 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 108 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 14:05:15,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 433 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 504 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 14:05:15,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-12-13 14:05:15,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 86. [2022-12-13 14:05:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 51 states have (on average 1.5686274509803921) internal successors, (80), 78 states have internal predecessors, (80), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 14:05:15,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2022-12-13 14:05:15,534 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 28 [2022-12-13 14:05:15,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:05:15,534 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2022-12-13 14:05:15,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 14:05:15,534 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2022-12-13 14:05:15,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 14:05:15,535 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:15,535 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:05:15,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-12-13 14:05:15,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-12-13 14:05:15,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:05:15,937 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:05:15,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:15,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1444706688, now seen corresponding path program 1 times [2022-12-13 14:05:15,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:05:15,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161792314] [2022-12-13 14:05:15,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:15,940 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:05:15,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:05:15,942 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:05:15,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-13 14:05:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:16,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:05:16,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:05:16,035 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 14:05:16,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:05:16,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:05:16,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161792314] [2022-12-13 14:05:16,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161792314] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:05:16,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:05:16,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:05:16,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636905255] [2022-12-13 14:05:16,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:05:16,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:05:16,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:05:16,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:05:16,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:05:16,036 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-12-13 14:05:16,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:05:16,128 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2022-12-13 14:05:16,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:05:16,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 30 [2022-12-13 14:05:16,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:05:16,129 INFO L225 Difference]: With dead ends: 85 [2022-12-13 14:05:16,129 INFO L226 Difference]: Without dead ends: 85 [2022-12-13 14:05:16,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:05:16,130 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 30 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:05:16,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 120 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:05:16,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-12-13 14:05:16,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-12-13 14:05:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 77 states have internal predecessors, (79), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 14:05:16,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2022-12-13 14:05:16,132 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 30 [2022-12-13 14:05:16,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:05:16,132 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2022-12-13 14:05:16,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-12-13 14:05:16,132 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2022-12-13 14:05:16,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 14:05:16,133 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:16,133 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:05:16,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-12-13 14:05:16,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:05:16,334 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:05:16,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:16,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1444706687, now seen corresponding path program 1 times [2022-12-13 14:05:16,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:05:16,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007326956] [2022-12-13 14:05:16,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:16,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:05:16,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:05:16,339 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:05:16,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-13 14:05:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:16,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 14:05:16,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:05:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 14:05:16,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:05:16,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-12-13 14:05:16,674 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 14:05:16,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:05:16,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007326956] [2022-12-13 14:05:16,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007326956] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:05:16,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:05:16,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-12-13 14:05:16,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339645828] [2022-12-13 14:05:16,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:05:16,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 14:05:16,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:05:16,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 14:05:16,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:05:16,676 INFO L87 Difference]: Start difference. First operand 85 states and 89 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, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 14:05:16,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:05:16,995 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2022-12-13 14:05:16,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:05:16,996 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, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 30 [2022-12-13 14:05:16,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:05:16,996 INFO L225 Difference]: With dead ends: 84 [2022-12-13 14:05:16,996 INFO L226 Difference]: Without dead ends: 84 [2022-12-13 14:05:16,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:05:16,997 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 126 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:05:16,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 287 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 14:05:16,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-12-13 14:05:16,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-12-13 14:05:16,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 76 states have internal predecessors, (78), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 14:05:16,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2022-12-13 14:05:16,999 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 30 [2022-12-13 14:05:16,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:05:16,999 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2022-12-13 14:05:16,999 INFO L496 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, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 14:05:16,999 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2022-12-13 14:05:17,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-13 14:05:17,000 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:17,000 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:05:17,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-12-13 14:05:17,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:05:17,201 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:05:17,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:17,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1836234894, now seen corresponding path program 1 times [2022-12-13 14:05:17,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:05:17,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446369048] [2022-12-13 14:05:17,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:17,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:05:17,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:05:17,206 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:05:17,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-12-13 14:05:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:17,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 14:05:17,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:05:17,332 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:05:17,334 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:05:17,360 INFO L350 Elim1Store]: Elim1 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 7 treesize of output 3 [2022-12-13 14:05:17,452 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-13 14:05:17,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2022-12-13 14:05:17,473 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:05:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 14:05:17,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:05:17,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:05:17,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446369048] [2022-12-13 14:05:17,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446369048] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:05:17,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:05:17,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 14:05:17,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508189873] [2022-12-13 14:05:17,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:05:17,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 14:05:17,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:05:17,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 14:05:17,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:05:17,483 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 12 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 14:05:17,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:05:17,742 INFO L93 Difference]: Finished difference Result 96 states and 99 transitions. [2022-12-13 14:05:17,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 14:05:17,742 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2022-12-13 14:05:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:05:17,742 INFO L225 Difference]: With dead ends: 96 [2022-12-13 14:05:17,742 INFO L226 Difference]: Without dead ends: 96 [2022-12-13 14:05:17,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-12-13 14:05:17,743 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 94 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:05:17,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 388 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:05:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-12-13 14:05:17,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2022-12-13 14:05:17,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 52 states have (on average 1.5192307692307692) internal successors, (79), 77 states have internal predecessors, (79), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 14:05:17,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2022-12-13 14:05:17,745 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 31 [2022-12-13 14:05:17,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:05:17,745 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2022-12-13 14:05:17,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 14:05:17,746 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2022-12-13 14:05:17,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-13 14:05:17,746 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:17,746 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:05:17,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-12-13 14:05:17,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:05:17,948 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:05:17,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:17,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1836234347, now seen corresponding path program 1 times [2022-12-13 14:05:17,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:05:17,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425852751] [2022-12-13 14:05:17,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:17,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:05:17,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:05:17,953 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:05:17,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-12-13 14:05:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:18,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 14:05:18,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:05:18,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 14:05:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 14:05:18,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:05:18,049 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:05:18,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425852751] [2022-12-13 14:05:18,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425852751] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:05:18,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:05:18,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:05:18,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972189589] [2022-12-13 14:05:18,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:05:18,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:05:18,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:05:18,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:05:18,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:05:18,051 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-12-13 14:05:18,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:05:18,227 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2022-12-13 14:05:18,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:05:18,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 31 [2022-12-13 14:05:18,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:05:18,228 INFO L225 Difference]: With dead ends: 88 [2022-12-13 14:05:18,228 INFO L226 Difference]: Without dead ends: 88 [2022-12-13 14:05:18,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:05:18,228 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 16 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:05:18,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 218 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:05:18,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-12-13 14:05:18,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2022-12-13 14:05:18,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 52 states have (on average 1.5) internal successors, (78), 76 states have internal predecessors, (78), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 14:05:18,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2022-12-13 14:05:18,231 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 31 [2022-12-13 14:05:18,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:05:18,231 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2022-12-13 14:05:18,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-12-13 14:05:18,232 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2022-12-13 14:05:18,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-13 14:05:18,232 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:18,232 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:05:18,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-12-13 14:05:18,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:05:18,434 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:05:18,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:18,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1836234346, now seen corresponding path program 1 times [2022-12-13 14:05:18,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:05:18,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85983386] [2022-12-13 14:05:18,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:18,436 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:05:18,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:05:18,439 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:05:18,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-12-13 14:05:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:18,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 14:05:18,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:05:18,620 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 15 [2022-12-13 14:05:18,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2022-12-13 14:05:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 14:05:18,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:05:18,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:05:18,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85983386] [2022-12-13 14:05:18,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85983386] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:05:18,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:05:18,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:05:18,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973704698] [2022-12-13 14:05:18,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:05:18,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:05:18,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:05:18,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:05:18,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:05:18,674 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-12-13 14:05:19,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:05:19,215 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2022-12-13 14:05:19,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:05:19,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 31 [2022-12-13 14:05:19,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:05:19,217 INFO L225 Difference]: With dead ends: 94 [2022-12-13 14:05:19,217 INFO L226 Difference]: Without dead ends: 94 [2022-12-13 14:05:19,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:05:19,218 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 20 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:05:19,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 241 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 14:05:19,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-12-13 14:05:19,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 83. [2022-12-13 14:05:19,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 75 states have internal predecessors, (77), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 14:05:19,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2022-12-13 14:05:19,220 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 31 [2022-12-13 14:05:19,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:05:19,220 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2022-12-13 14:05:19,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-12-13 14:05:19,220 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2022-12-13 14:05:19,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 14:05:19,221 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:19,221 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:05:19,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-12-13 14:05:19,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:05:19,422 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:05:19,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:19,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1088706739, now seen corresponding path program 1 times [2022-12-13 14:05:19,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:05:19,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811040981] [2022-12-13 14:05:19,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:19,424 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:05:19,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:05:19,427 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:05:19,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-12-13 14:05:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:19,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 14:05:19,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:05:19,559 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:05:19,603 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:05:19,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:05:19,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:05:21,674 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_14| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_20| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_20|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_14|) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_20|))) is different from true [2022-12-13 14:05:23,801 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 14:05:23,801 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 32 [2022-12-13 14:05:23,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2022-12-13 14:05:23,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-12-13 14:05:23,887 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 14:05:23,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 15 [2022-12-13 14:05:23,904 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-13 14:05:23,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:05:24,994 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret48#1.base_29| (_ BitVec 32))) (or (forall ((v_ArrVal_367 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base|) |c_ULTIMATE.start_entry_point_#t~mem47#1.offset| |v_ULTIMATE.start_entry_point_#t~ret48#1.base_29|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_367) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (_ bv0 32)))) (= |v_ULTIMATE.start_entry_point_#t~ret48#1.base_29| (_ bv0 32)))) is different from false [2022-12-13 14:05:24,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:05:24,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811040981] [2022-12-13 14:05:24,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811040981] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:05:24,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1985522073] [2022-12-13 14:05:24,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:24,997 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:05:24,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:05:24,998 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:05:24,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-12-13 14:05:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:25,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 14:05:25,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:05:25,126 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:05:25,180 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:05:25,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:05:25,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:05:25,496 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 14:05:25,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-12-13 14:05:25,521 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 11 [2022-12-13 14:05:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:05:25,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:05:27,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1985522073] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:05:27,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:05:27,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 22 [2022-12-13 14:05:27,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774394140] [2022-12-13 14:05:27,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:05:27,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 14:05:27,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:05:27,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 14:05:27,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=562, Unknown=26, NotChecked=98, Total=756 [2022-12-13 14:05:27,752 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 18 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-13 14:05:29,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:05:31,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:05:35,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:05:37,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:05:39,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:05:39,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:05:39,896 INFO L93 Difference]: Finished difference Result 127 states and 132 transitions. [2022-12-13 14:05:39,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 14:05:39,896 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 18 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 32 [2022-12-13 14:05:39,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:05:39,897 INFO L225 Difference]: With dead ends: 127 [2022-12-13 14:05:39,897 INFO L226 Difference]: Without dead ends: 127 [2022-12-13 14:05:39,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=204, Invalid=1331, Unknown=33, NotChecked=154, Total=1722 [2022-12-13 14:05:39,899 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 91 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 28 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-12-13 14:05:39,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 774 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 916 Invalid, 5 Unknown, 116 Unchecked, 11.5s Time] [2022-12-13 14:05:39,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-12-13 14:05:39,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 89. [2022-12-13 14:05:39,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 80 states have internal predecessors, (83), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 14:05:39,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2022-12-13 14:05:39,902 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 32 [2022-12-13 14:05:39,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:05:39,902 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2022-12-13 14:05:39,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 18 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-13 14:05:39,903 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2022-12-13 14:05:39,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-13 14:05:39,903 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:39,903 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-13 14:05:39,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2022-12-13 14:05:40,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-12-13 14:05:40,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:05:40,304 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:05:40,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:40,304 INFO L85 PathProgramCache]: Analyzing trace with hash 738912307, now seen corresponding path program 1 times [2022-12-13 14:05:40,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:05:40,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495925698] [2022-12-13 14:05:40,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:40,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:05:40,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:05:40,305 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:05:40,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-12-13 14:05:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:40,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:05:40,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:05:40,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 14:05:40,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 14:05:40,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:05:40,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:05:40,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495925698] [2022-12-13 14:05:40,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495925698] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:05:40,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:05:40,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:05:40,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857818365] [2022-12-13 14:05:40,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:05:40,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:05:40,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:05:40,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:05:40,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:05:40,413 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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) [2022-12-13 14:05:40,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:05:40,619 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2022-12-13 14:05:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:05:40,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 33 [2022-12-13 14:05:40,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:05:40,620 INFO L225 Difference]: With dead ends: 90 [2022-12-13 14:05:40,621 INFO L226 Difference]: Without dead ends: 90 [2022-12-13 14:05:40,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:05:40,621 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 7 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:05:40,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 180 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:05:40,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-12-13 14:05:40,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-12-13 14:05:40,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.423728813559322) internal successors, (84), 81 states have internal predecessors, (84), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 14:05:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2022-12-13 14:05:40,625 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 33 [2022-12-13 14:05:40,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:05:40,625 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2022-12-13 14:05:40,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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) [2022-12-13 14:05:40,625 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2022-12-13 14:05:40,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 14:05:40,626 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:05:40,626 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:05:40,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-12-13 14:05:40,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:05:40,827 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:05:40,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:05:40,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1143014625, now seen corresponding path program 1 times [2022-12-13 14:05:40,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:05:40,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837977265] [2022-12-13 14:05:40,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:40,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:05:40,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:05:40,832 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:05:40,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-12-13 14:05:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:41,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 14:05:41,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:05:41,013 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:05:41,059 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:05:41,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:05:41,078 INFO L350 Elim1Store]: Elim1 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 6 treesize of output 5 [2022-12-13 14:05:41,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:05:43,154 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_24| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_24| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_24|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|)))) is different from true [2022-12-13 14:05:43,163 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:05:47,297 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 14:05:47,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 32 [2022-12-13 14:05:47,302 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 32 [2022-12-13 14:05:47,406 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 19 [2022-12-13 14:05:47,472 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 14:05:47,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 18 [2022-12-13 14:05:47,518 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_435 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_435))))) is different from true [2022-12-13 14:05:47,548 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 14:05:47,548 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-12-13 14:05:47,553 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2022-12-13 14:05:47,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:05:48,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 76 [2022-12-13 14:05:48,081 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_432 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_entry_point_#t~ret48#1.base_35| (_ BitVec 32))) (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base|) |c_ULTIMATE.start_entry_point_#t~mem47#1.offset| |v_ULTIMATE.start_entry_point_#t~ret48#1.base_35|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_432) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) |v_ULTIMATE.start_entry_point_#t~ret48#1.base_35|)) is different from false [2022-12-13 14:05:48,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:05:48,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837977265] [2022-12-13 14:05:48,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837977265] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:05:48,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1369307279] [2022-12-13 14:05:48,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:05:48,084 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:05:48,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:05:48,084 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:05:48,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-12-13 14:05:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:05:48,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-13 14:05:48,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:05:48,267 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:05:50,426 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:05:50,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:05:50,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:05:50,473 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:05:52,591 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_26| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_26|) (_ bv0 32)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_26|))) is different from true [2022-12-13 14:05:52,596 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:06:00,831 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 14:06:00,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 32 [2022-12-13 14:06:00,836 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 32 [2022-12-13 14:06:00,979 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 19 [2022-12-13 14:06:01,076 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 14:06:01,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 18 [2022-12-13 14:06:01,090 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_469 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_469))))) is different from true [2022-12-13 14:06:01,114 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 14:06:01,115 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-12-13 14:06:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2022-12-13 14:06:01,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:06:01,353 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_466 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base|) |c_ULTIMATE.start_entry_point_#t~mem47#1.offset| |c_ULTIMATE.start_entry_point_#t~ret48#1.base|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_466) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))))) is different from false [2022-12-13 14:06:01,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 76 [2022-12-13 14:06:01,384 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_466 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_entry_point_#t~ret48#1.base_38| (_ BitVec 32))) (= |v_ULTIMATE.start_entry_point_#t~ret48#1.base_38| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base|) |c_ULTIMATE.start_entry_point_#t~mem47#1.offset| |v_ULTIMATE.start_entry_point_#t~ret48#1.base_38|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_466) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) is different from false [2022-12-13 14:06:01,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1369307279] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:06:01,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:06:01,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2022-12-13 14:06:01,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190822167] [2022-12-13 14:06:01,387 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:06:01,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 14:06:01,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:06:01,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 14:06:01,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=892, Unknown=19, NotChecked=462, Total=1482 [2022-12-13 14:06:01,388 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand has 31 states, 28 states have (on average 1.75) internal successors, (49), 25 states have internal predecessors, (49), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-12-13 14:06:03,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:06:09,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:06:11,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:06:26,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:06:26,013 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2022-12-13 14:06:26,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 14:06:26,014 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 1.75) internal successors, (49), 25 states have internal predecessors, (49), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 37 [2022-12-13 14:06:26,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:06:26,014 INFO L225 Difference]: With dead ends: 102 [2022-12-13 14:06:26,014 INFO L226 Difference]: Without dead ends: 102 [2022-12-13 14:06:26,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 36.2s TimeCoverageRelationStatistics Valid=258, Invalid=1817, Unknown=23, NotChecked=658, Total=2756 [2022-12-13 14:06:26,015 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 120 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 41 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 372 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-12-13 14:06:26,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 480 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 800 Invalid, 3 Unknown, 372 Unchecked, 7.9s Time] [2022-12-13 14:06:26,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-12-13 14:06:26,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 94. [2022-12-13 14:06:26,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 84 states have internal predecessors, (88), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-13 14:06:26,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2022-12-13 14:06:26,017 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 37 [2022-12-13 14:06:26,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:06:26,018 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2022-12-13 14:06:26,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 1.75) internal successors, (49), 25 states have internal predecessors, (49), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-12-13 14:06:26,018 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2022-12-13 14:06:26,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 14:06:26,018 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:06:26,018 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:06:26,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2022-12-13 14:06:26,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-12-13 14:06:26,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:06:26,420 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:06:26,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:06:26,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1143014624, now seen corresponding path program 1 times [2022-12-13 14:06:26,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:06:26,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980314646] [2022-12-13 14:06:26,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:06:26,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:06:26,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:06:26,425 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:06:26,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-12-13 14:06:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:26,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-13 14:06:26,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:06:26,554 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:06:26,605 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:06:26,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:06:26,618 INFO L350 Elim1Store]: Elim1 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 6 treesize of output 5 [2022-12-13 14:06:26,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:06:28,683 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_19| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_28| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_28| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_28|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_19|)))) is different from true [2022-12-13 14:06:30,732 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:06:30,740 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:06:32,949 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 14:06:32,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-12-13 14:06:32,954 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 50 [2022-12-13 14:06:33,197 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-12-13 14:06:33,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 45 [2022-12-13 14:06:33,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2022-12-13 14:06:33,294 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_504 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_504))))) is different from true [2022-12-13 14:06:33,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:06:33,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 14:06:33,319 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:06:33,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:06:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-12-13 14:06:33,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:06:33,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:06:33,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980314646] [2022-12-13 14:06:33,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980314646] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:06:33,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [248277570] [2022-12-13 14:06:33,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:06:33,745 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:06:33,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:06:33,746 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:06:33,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-12-13 14:06:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:33,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-13 14:06:33,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:06:33,932 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:06:34,160 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:06:34,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:06:34,227 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:06:34,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:06:34,668 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:06:34,676 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:06:34,999 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 14:06:34,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-12-13 14:06:35,008 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 53 [2022-12-13 14:06:35,414 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-12-13 14:06:35,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 44 [2022-12-13 14:06:35,431 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 14:06:35,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-12-13 14:06:35,449 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_539 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_539) |c_#length|)))) is different from true [2022-12-13 14:06:35,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:06:35,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 14:06:35,475 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:06:35,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:06:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-12-13 14:06:35,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:06:38,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [248277570] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:06:38,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:06:38,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 35 [2022-12-13 14:06:38,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932067054] [2022-12-13 14:06:38,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:06:38,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-13 14:06:38,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:06:38,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-13 14:06:38,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1084, Unknown=3, NotChecked=204, Total=1406 [2022-12-13 14:06:38,123 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand has 36 states, 32 states have (on average 1.625) internal successors, (52), 27 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-12-13 14:06:40,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:06:42,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:06:46,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:06:48,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:06:56,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:06:57,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:06:57,187 INFO L93 Difference]: Finished difference Result 124 states and 129 transitions. [2022-12-13 14:06:57,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 14:06:57,188 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 1.625) internal successors, (52), 27 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 37 [2022-12-13 14:06:57,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:06:57,188 INFO L225 Difference]: With dead ends: 124 [2022-12-13 14:06:57,188 INFO L226 Difference]: Without dead ends: 124 [2022-12-13 14:06:57,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=261, Invalid=2099, Unknown=4, NotChecked=288, Total=2652 [2022-12-13 14:06:57,189 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 140 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 45 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 354 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:06:57,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 806 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1188 Invalid, 5 Unknown, 354 Unchecked, 12.1s Time] [2022-12-13 14:06:57,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-12-13 14:06:57,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 94. [2022-12-13 14:06:57,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 62 states have (on average 1.403225806451613) internal successors, (87), 84 states have internal predecessors, (87), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-13 14:06:57,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2022-12-13 14:06:57,192 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 37 [2022-12-13 14:06:57,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:06:57,192 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2022-12-13 14:06:57,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 1.625) internal successors, (52), 27 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-12-13 14:06:57,192 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2022-12-13 14:06:57,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 14:06:57,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:06:57,192 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-13 14:06:57,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-12-13 14:06:57,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2022-12-13 14:06:57,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:06:57,594 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:06:57,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:06:57,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1229276979, now seen corresponding path program 1 times [2022-12-13 14:06:57,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:06:57,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108472712] [2022-12-13 14:06:57,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:06:57,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:06:57,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:06:57,599 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:06:57,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-12-13 14:06:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:57,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 14:06:57,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:06:57,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 18 [2022-12-13 14:06:57,769 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_561 (_ BitVec 1))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_561) |c_#valid|)) (not (= |ldv_malloc_#res.base| (_ bv0 32))))) is different from true [2022-12-13 14:06:57,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 18 [2022-12-13 14:06:57,982 INFO L321 Elim1Store]: treesize reduction 3, result has 81.3 percent of original size [2022-12-13 14:06:57,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2022-12-13 14:06:57,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-13 14:06:58,078 INFO L321 Elim1Store]: treesize reduction 32, result has 27.3 percent of original size [2022-12-13 14:06:58,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 39 [2022-12-13 14:06:58,102 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 4 not checked. [2022-12-13 14:06:58,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:06:58,334 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 14:06:58,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 42 [2022-12-13 14:06:58,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-12-13 14:06:58,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:06:58,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108472712] [2022-12-13 14:06:58,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108472712] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:06:58,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [246944905] [2022-12-13 14:06:58,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:06:58,500 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:06:58,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:06:58,500 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:06:58,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-12-13 14:06:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:06:58,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 14:06:58,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:06:58,631 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:06:58,719 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:06:58,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:06:58,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:06:58,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-13 14:07:02,997 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 14:07:02,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-12-13 14:07:03,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-12-13 14:07:03,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-12-13 14:07:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:07:03,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:07:03,155 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_583 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_ULTIMATE.start_entry_point_~a10~0#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_583) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ULTIMATE.start_entry_point_~a10~0#1.base|)))) is different from false [2022-12-13 14:07:03,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [246944905] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:07:03,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:07:03,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23 [2022-12-13 14:07:03,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529625305] [2022-12-13 14:07:03,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:07:03,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 14:07:03,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:07:03,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 14:07:03,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=697, Unknown=3, NotChecked=110, Total=930 [2022-12-13 14:07:03,172 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 21 states have internal predecessors, (57), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 14:07:05,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:07:09,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:07:11,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:07:20,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:07:20,618 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2022-12-13 14:07:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 14:07:20,619 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 21 states have internal predecessors, (57), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 36 [2022-12-13 14:07:20,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:07:20,620 INFO L225 Difference]: With dead ends: 97 [2022-12-13 14:07:20,620 INFO L226 Difference]: Without dead ends: 97 [2022-12-13 14:07:20,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=276, Invalid=1533, Unknown=5, NotChecked=166, Total=1980 [2022-12-13 14:07:20,620 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 148 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 50 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-12-13 14:07:20,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 367 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 696 Invalid, 3 Unknown, 84 Unchecked, 6.9s Time] [2022-12-13 14:07:20,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-12-13 14:07:20,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-12-13 14:07:20,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 87 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-13 14:07:20,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 103 transitions. [2022-12-13 14:07:20,622 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 103 transitions. Word has length 36 [2022-12-13 14:07:20,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:07:20,623 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 103 transitions. [2022-12-13 14:07:20,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 21 states have internal predecessors, (57), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 14:07:20,623 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 103 transitions. [2022-12-13 14:07:20,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 14:07:20,623 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:07:20,623 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:07:20,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-12-13 14:07:20,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2022-12-13 14:07:21,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:07:21,025 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:07:21,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:07:21,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1653548802, now seen corresponding path program 1 times [2022-12-13 14:07:21,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:07:21,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217428833] [2022-12-13 14:07:21,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:07:21,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:07:21,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:07:21,029 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:07:21,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-12-13 14:07:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:07:21,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 14:07:21,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:07:21,133 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:07:21,178 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:07:21,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:07:21,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:07:23,250 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_25| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_35| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_35| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_35|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_25|)))) is different from true [2022-12-13 14:07:25,391 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 14:07:25,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-12-13 14:07:25,395 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-12-13 14:07:25,518 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-12-13 14:07:25,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 36 [2022-12-13 14:07:25,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2022-12-13 14:07:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-13 14:07:25,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:07:39,278 INFO L350 Elim1Store]: Elim1 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 140 treesize of output 112 [2022-12-13 14:07:39,378 INFO L321 Elim1Store]: treesize reduction 14, result has 54.8 percent of original size [2022-12-13 14:07:39,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 246 treesize of output 190 [2022-12-13 14:07:39,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:07:39,920 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 14 refuted. 2 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 14:07:39,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:07:39,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217428833] [2022-12-13 14:07:39,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217428833] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:07:39,920 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:07:39,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 23 [2022-12-13 14:07:39,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35743908] [2022-12-13 14:07:39,921 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:07:39,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 14:07:39,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:07:39,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 14:07:39,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=403, Unknown=5, NotChecked=40, Total=506 [2022-12-13 14:07:39,921 INFO L87 Difference]: Start difference. First operand 97 states and 103 transitions. Second operand has 23 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 5 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 14:07:50,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:08:02,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-13 14:08:06,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 14:08:10,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:08:10,741 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2022-12-13 14:08:10,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 14:08:10,741 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 5 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 37 [2022-12-13 14:08:10,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:08:10,742 INFO L225 Difference]: With dead ends: 96 [2022-12-13 14:08:10,742 INFO L226 Difference]: Without dead ends: 96 [2022-12-13 14:08:10,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 35.1s TimeCoverageRelationStatistics Valid=163, Invalid=1021, Unknown=10, NotChecked=66, Total=1260 [2022-12-13 14:08:10,743 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 88 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 26 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-12-13 14:08:10,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 453 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 695 Invalid, 3 Unknown, 88 Unchecked, 13.8s Time] [2022-12-13 14:08:10,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-12-13 14:08:10,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2022-12-13 14:08:10,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 82 states have internal predecessors, (84), 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) [2022-12-13 14:08:10,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2022-12-13 14:08:10,745 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 37 [2022-12-13 14:08:10,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:08:10,745 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2022-12-13 14:08:10,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 5 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 14:08:10,745 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2022-12-13 14:08:10,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 14:08:10,746 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:08:10,746 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-12-13 14:08:10,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-12-13 14:08:10,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:08:10,947 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:08:10,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:08:10,948 INFO L85 PathProgramCache]: Analyzing trace with hash 219174838, now seen corresponding path program 1 times [2022-12-13 14:08:10,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:08:10,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897805824] [2022-12-13 14:08:10,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:08:10,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:08:10,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:08:10,952 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:08:10,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-12-13 14:08:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:08:11,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-13 14:08:11,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:08:11,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:08:11,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-12-13 14:08:11,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 14:08:12,125 INFO L321 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2022-12-13 14:08:12,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 36 [2022-12-13 14:08:12,595 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-13 14:08:12,595 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 43 [2022-12-13 14:08:13,370 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 14:08:13,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 42 [2022-12-13 14:08:22,191 WARN L859 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32))) (exists ((|v_ULTIMATE.start_entry_point_#t~mem53#1.base_14| (_ BitVec 32)) (v_ArrVal_639 (_ BitVec 1)) (|ULTIMATE.start_entry_point_~a10~0#1.base| (_ BitVec 32))) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base| v_ArrVal_639))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base|) (_ bv0 1)) (not (= |v_ULTIMATE.start_entry_point_#t~mem53#1.base_14| (_ bv0 32))) (not (= |ULTIMATE.start_entry_point_~a10~0#1.base| |v_ULTIMATE.start_entry_point_#t~mem53#1.base_14|)) (= |c_#valid| (store (store .cse0 |v_ULTIMATE.start_entry_point_#t~mem53#1.base_14| (_ bv0 1)) |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 1))) (not (= |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 32))) (= (select .cse0 |v_ULTIMATE.start_entry_point_#t~mem53#1.base_14|) (_ bv0 1)))))) is different from true [2022-12-13 14:08:22,229 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 14:08:22,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:08:23,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2022-12-13 14:09:03,411 WARN L233 SmtUtils]: Spent 20.22s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:09:03,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:09:03,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897805824] [2022-12-13 14:09:03,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897805824] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:09:03,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1959050350] [2022-12-13 14:09:03,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:09:03,413 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:09:03,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:09:03,414 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:09:03,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-12-13 14:09:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:03,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 14:09:03,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:09:04,404 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:09:04,906 INFO L321 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2022-12-13 14:09:04,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 18 [2022-12-13 14:09:13,337 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 14:09:13,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-12-13 14:09:13,455 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 21 [2022-12-13 14:09:15,973 WARN L859 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32))) (exists ((|v_ULTIMATE.start_entry_point_#t~mem53#1.base_16| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~a10~0#1.base| (_ BitVec 32))) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv1 1)))) (and (= |c_#valid| (store (store .cse0 |v_ULTIMATE.start_entry_point_#t~mem53#1.base_16| (_ bv0 1)) |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 1))) (= (select .cse0 |v_ULTIMATE.start_entry_point_#t~mem53#1.base_16|) (_ bv0 1)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base|) (_ bv0 1)))))) is different from true [2022-12-13 14:09:15,993 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:09:15,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:09:16,059 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_665 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store (store |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_665) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) (_ bv0 1)) |c_ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|)) is different from false [2022-12-13 14:09:16,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1959050350] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:09:16,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:09:16,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 29 [2022-12-13 14:09:16,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382325153] [2022-12-13 14:09:16,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:09:16,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 14:09:16,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:09:16,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 14:09:16,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1544, Unknown=19, NotChecked=246, Total=1980 [2022-12-13 14:09:16,091 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand has 31 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 25 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 14:09:18,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:09:22,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:09:24,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:09:29,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:09:31,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:09:43,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:09:46,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:09:46,854 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2022-12-13 14:09:46,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 14:09:46,854 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 25 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 38 [2022-12-13 14:09:46,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:09:46,855 INFO L225 Difference]: With dead ends: 93 [2022-12-13 14:09:46,855 INFO L226 Difference]: Without dead ends: 77 [2022-12-13 14:09:46,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 76.6s TimeCoverageRelationStatistics Valid=376, Invalid=3036, Unknown=22, NotChecked=348, Total=3782 [2022-12-13 14:09:46,856 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 89 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 29 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:09:46,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 670 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1206 Invalid, 7 Unknown, 166 Unchecked, 16.2s Time] [2022-12-13 14:09:46,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-13 14:09:46,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-12-13 14:09:46,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 69 states have internal predecessors, (70), 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) [2022-12-13 14:09:46,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2022-12-13 14:09:46,858 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 38 [2022-12-13 14:09:46,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:09:46,858 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2022-12-13 14:09:46,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 25 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 14:09:46,859 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2022-12-13 14:09:46,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 14:09:46,859 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:09:46,859 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:09:46,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2022-12-13 14:09:47,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-12-13 14:09:47,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:09:47,261 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:09:47,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:09:47,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1047942818, now seen corresponding path program 1 times [2022-12-13 14:09:47,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:09:47,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247163878] [2022-12-13 14:09:47,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:09:47,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:09:47,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:09:47,266 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:09:47,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-12-13 14:09:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:47,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 14:09:47,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:09:47,679 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-12-13 14:09:47,717 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 14:09:47,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-13 14:09:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 14:09:47,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:09:47,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:09:47,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247163878] [2022-12-13 14:09:47,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247163878] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:09:47,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:09:47,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:09:47,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094625845] [2022-12-13 14:09:47,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:09:47,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:09:47,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:09:47,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:09:47,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2022-12-13 14:09:47,759 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:09:48,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:09:48,095 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2022-12-13 14:09:48,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:09:48,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2022-12-13 14:09:48,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:09:48,097 INFO L225 Difference]: With dead ends: 78 [2022-12-13 14:09:48,097 INFO L226 Difference]: Without dead ends: 78 [2022-12-13 14:09:48,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2022-12-13 14:09:48,098 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 46 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:09:48,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 105 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 107 Invalid, 0 Unknown, 80 Unchecked, 0.3s Time] [2022-12-13 14:09:48,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-12-13 14:09:48,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2022-12-13 14:09:48,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 68 states have internal predecessors, (69), 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) [2022-12-13 14:09:48,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2022-12-13 14:09:48,100 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 40 [2022-12-13 14:09:48,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:09:48,101 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2022-12-13 14:09:48,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:09:48,101 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2022-12-13 14:09:48,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 14:09:48,101 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:09:48,102 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:09:48,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-12-13 14:09:48,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:09:48,303 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:09:48,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:09:48,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1047942817, now seen corresponding path program 1 times [2022-12-13 14:09:48,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:09:48,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492283377] [2022-12-13 14:09:48,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:09:48,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:09:48,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:09:48,309 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:09:48,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-12-13 14:09:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:48,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 14:09:48,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:09:48,824 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_721 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_721))) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-12-13 14:09:48,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:09:48,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 14:09:48,869 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:09:48,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:09:48,993 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 2 not checked. [2022-12-13 14:09:48,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:09:51,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:09:51,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492283377] [2022-12-13 14:09:51,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492283377] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:09:51,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1019635321] [2022-12-13 14:09:51,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:09:51,591 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:09:51,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:09:51,592 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:09:51,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2022-12-13 14:09:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:51,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-13 14:09:51,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:09:51,932 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:09:51,943 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:09:52,410 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:09:52,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:09:52,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 14:09:52,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:09:52,697 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 4 [2022-12-13 14:09:52,750 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_756 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_756) |c_#length|)))) is different from true [2022-12-13 14:09:52,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:09:52,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 14:09:52,805 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:09:52,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:09:53,014 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_757 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_757))))) is different from true [2022-12-13 14:09:53,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:09:53,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 14:09:53,062 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:09:53,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:09:53,169 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 10 not checked. [2022-12-13 14:09:53,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:09:53,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1019635321] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:09:53,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:09:53,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2022-12-13 14:09:53,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533906836] [2022-12-13 14:09:53,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:09:53,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 14:09:53,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:09:53,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 14:09:53,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=428, Unknown=4, NotChecked=132, Total=650 [2022-12-13 14:09:53,493 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 23 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 4 states have call successors, (7), 2 states have call predecessors, (7), 7 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 14:09:55,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:09:55,508 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2022-12-13 14:09:55,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 14:09:55,509 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 4 states have call successors, (7), 2 states have call predecessors, (7), 7 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 40 [2022-12-13 14:09:55,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:09:55,510 INFO L225 Difference]: With dead ends: 93 [2022-12-13 14:09:55,510 INFO L226 Difference]: Without dead ends: 93 [2022-12-13 14:09:55,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=165, Invalid=773, Unknown=4, NotChecked=180, Total=1122 [2022-12-13 14:09:55,511 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 212 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 14 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 258 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 14:09:55,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 330 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 552 Invalid, 21 Unknown, 258 Unchecked, 1.5s Time] [2022-12-13 14:09:55,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-12-13 14:09:55,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 75. [2022-12-13 14:09:55,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 67 states have internal predecessors, (68), 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) [2022-12-13 14:09:55,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2022-12-13 14:09:55,513 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 40 [2022-12-13 14:09:55,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:09:55,513 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2022-12-13 14:09:55,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 4 states have call successors, (7), 2 states have call predecessors, (7), 7 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 14:09:55,513 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2022-12-13 14:09:55,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-13 14:09:55,513 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:09:55,513 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:09:55,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-12-13 14:09:55,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2022-12-13 14:09:55,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:09:55,916 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:09:55,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:09:55,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1873511044, now seen corresponding path program 1 times [2022-12-13 14:09:55,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:09:55,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329006080] [2022-12-13 14:09:55,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:09:55,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:09:55,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:09:55,918 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:09:55,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-12-13 14:09:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:09:56,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-13 14:09:56,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:09:56,142 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:09:56,255 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:09:56,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:09:56,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:09:56,303 INFO L350 Elim1Store]: Elim1 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 6 treesize of output 5 [2022-12-13 14:09:56,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-13 14:10:02,694 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 14:10:02,695 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-12-13 14:10:02,882 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 14:10:02,882 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 39 [2022-12-13 14:10:02,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2022-12-13 14:10:03,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-12-13 14:10:03,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 14:10:09,599 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_alloc_10_#t~mem38#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_38| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_50| (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_50|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_38|))) (and (not (= (select (select |c_#memory_$Pointer$.base| .cse0) |ULTIMATE.start_alloc_10_#t~mem38#1.offset|) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_50|)) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_50| .cse0))))) (exists ((v_ArrVal_795 (_ BitVec 1)) (|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_795) |c_#valid|)))) is different from true [2022-12-13 14:10:09,746 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-12-13 14:10:09,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-12-13 14:10:09,939 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-12-13 14:10:09,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2022-12-13 14:10:09,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 14:10:10,184 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 15 [2022-12-13 14:10:10,290 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-12-13 14:10:10,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:10:10,530 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_796 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_796) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))))) is different from false [2022-12-13 14:10:10,617 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_796 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ldv_malloc_#res.base_156| (_ BitVec 32)) (v_ArrVal_799 (_ BitVec 1))) (or (= (_ bv0 1) (bvadd (select (store |c_#valid| |v_ldv_malloc_#res.base_156| v_ArrVal_799) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_796) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (_ bv1 1))) (not (= (select |c_#valid| |v_ldv_malloc_#res.base_156|) (_ bv0 1))))) is different from false [2022-12-13 14:10:10,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:10:10,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329006080] [2022-12-13 14:10:10,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329006080] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:10:10,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1360505835] [2022-12-13 14:10:10,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:10:10,621 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:10:10,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:10:10,622 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:10:10,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2022-12-13 14:10:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:10:10,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-13 14:10:10,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:10:10,913 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:10:11,257 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:10:11,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:10:11,379 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:10:11,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:10:11,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-13 14:10:28,113 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:10:28,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:10:28,386 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 14:10:28,386 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 39 [2022-12-13 14:10:28,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2022-12-13 14:10:28,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-12-13 14:10:29,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-12-13 14:10:39,479 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_834 (_ BitVec 1)) (|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_834) |c_#valid|))) (exists ((|ULTIMATE.start_alloc_10_#t~mem38#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_53| (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_53|) (_ bv0 32)))) (and (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_53| .cse0)) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_53| (select (select |c_#memory_$Pointer$.base| .cse0) |ULTIMATE.start_alloc_10_#t~mem38#1.offset|))))))) is different from true [2022-12-13 14:10:39,580 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-12-13 14:10:39,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 35 [2022-12-13 14:10:39,836 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-12-13 14:10:39,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2022-12-13 14:10:39,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-13 14:10:40,182 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 15 [2022-12-13 14:10:40,187 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-12-13 14:10:40,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:10:40,222 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_835 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_835) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (_ bv1 1)))) is different from false [2022-12-13 14:10:40,320 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ldv_malloc_#res.base_159| (_ BitVec 32)) (v_ArrVal_835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_838 (_ BitVec 1))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_159|))) (= (bvadd (_ bv1 1) (select (store |c_#valid| |v_ldv_malloc_#res.base_159| v_ArrVal_838) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_835) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (_ bv0 1)))) is different from false [2022-12-13 14:10:40,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1360505835] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:10:40,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:10:40,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 39 [2022-12-13 14:10:40,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643760613] [2022-12-13 14:10:40,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:10:40,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-13 14:10:40,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:10:40,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-13 14:10:40,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1412, Unknown=21, NotChecked=486, Total=2070 [2022-12-13 14:10:40,325 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 40 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 34 states have internal predecessors, (60), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-13 14:10:42,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:10:44,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:10:46,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:10:48,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:10:50,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:10:52,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:10:54,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:10:56,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:10:58,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:11:00,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:11:04,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:11:07,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:11:09,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:11:11,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:11:25,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:11:27,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:11:30,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:11:30,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:11:30,940 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2022-12-13 14:11:30,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 14:11:30,941 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 34 states have internal predecessors, (60), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 41 [2022-12-13 14:11:30,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:11:30,941 INFO L225 Difference]: With dead ends: 80 [2022-12-13 14:11:30,941 INFO L226 Difference]: Without dead ends: 80 [2022-12-13 14:11:30,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 55.3s TimeCoverageRelationStatistics Valid=313, Invalid=2442, Unknown=25, NotChecked=642, Total=3422 [2022-12-13 14:11:30,942 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 100 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 25 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 37.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:11:30,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 761 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1035 Invalid, 20 Unknown, 152 Unchecked, 37.1s Time] [2022-12-13 14:11:30,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-13 14:11:30,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2022-12-13 14:11:30,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 69 states have internal predecessors, (70), 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) [2022-12-13 14:11:30,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2022-12-13 14:11:30,944 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 41 [2022-12-13 14:11:30,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:11:30,944 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2022-12-13 14:11:30,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 1.6216216216216217) internal successors, (60), 34 states have internal predecessors, (60), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-13 14:11:30,944 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2022-12-13 14:11:30,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-13 14:11:30,945 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:11:30,945 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:11:30,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-12-13 14:11:31,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2022-12-13 14:11:31,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:11:31,346 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:11:31,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:11:31,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1873511045, now seen corresponding path program 1 times [2022-12-13 14:11:31,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:11:31,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438401439] [2022-12-13 14:11:31,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:31,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:11:31,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:11:31,352 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:11:31,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-12-13 14:11:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:31,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-13 14:11:31,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:11:31,534 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:11:31,679 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:11:31,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:11:31,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:11:31,761 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:11:31,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-13 14:11:32,199 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:11:32,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:11:32,430 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 14:11:32,430 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 39 [2022-12-13 14:11:32,449 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 34 [2022-12-13 14:11:33,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-12-13 14:11:33,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-12-13 14:11:33,804 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_56| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_43| (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_56|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_43|)) (.cse1 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_56|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_43|))) (and (= .cse0 (_ bv0 32)) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_56| (select (select |c_#memory_$Pointer$.base| .cse1) .cse0))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_56| .cse1))))) (exists ((v_ArrVal_873 (_ BitVec 32)) (|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_873) |c_#length|)))) is different from true [2022-12-13 14:11:33,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:11:33,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-12-13 14:11:33,898 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-12-13 14:11:33,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-12-13 14:11:34,200 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-12-13 14:11:34,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 75 [2022-12-13 14:11:34,239 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 14:11:34,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 65 [2022-12-13 14:11:34,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-12-13 14:11:34,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-12-13 14:11:34,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-12-13 14:11:34,711 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-12-13 14:11:34,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:11:35,364 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_874 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_875 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_874) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_875) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) (forall ((v_ArrVal_874 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_874) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) is different from false [2022-12-13 14:11:38,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:11:38,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438401439] [2022-12-13 14:11:38,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438401439] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:11:38,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1305769666] [2022-12-13 14:11:38,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:11:38,301 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:11:38,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:11:38,302 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:11:38,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2022-12-13 14:11:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:11:38,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 65 conjunts are in the unsatisfiable core [2022-12-13 14:11:38,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:11:38,561 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:11:39,108 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:11:41,357 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 14:11:41,357 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-12-13 14:11:41,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:11:41,602 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:11:42,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 14:11:42,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-13 14:11:44,593 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-13 14:11:44,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-12-13 14:11:44,657 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-13 14:11:44,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-12-13 14:11:44,987 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 14:11:44,987 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 48 [2022-12-13 14:11:44,999 INFO L350 Elim1Store]: Elim1 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 54 treesize of output 52 [2022-12-13 14:11:46,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-13 14:11:46,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-12-13 14:11:46,680 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|ldv_malloc_#res.base| (_ BitVec 32)) (v_ArrVal_916 (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_916)))) (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_59| (_ BitVec 32))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_59|) (_ bv0 32))) (.cse1 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_59|) (_ bv0 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| .cse2) .cse1))) (and (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_59| .cse0)) (= (_ bv0 32) .cse1) (not (= .cse0 .cse2))))))) is different from true [2022-12-13 14:11:46,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:11:46,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 14:11:46,855 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-12-13 14:11:46,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-12-13 14:11:47,260 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-12-13 14:11:47,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 71 [2022-12-13 14:11:47,299 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 14:11:47,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 61 [2022-12-13 14:11:47,886 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 14:11:47,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 24 [2022-12-13 14:11:47,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 14:11:48,073 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-12-13 14:11:48,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:11:48,185 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_918 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_918) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_917 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_918 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_918) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_917) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))))) is different from false [2022-12-13 14:11:48,343 WARN L837 $PredicateComparison]: unable to prove that (and (or (forall ((|v_ldv_malloc_#res.base_165| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_165|)))) (forall ((v_ArrVal_918 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_918) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) (forall ((|v_ldv_malloc_#res.base_165| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_165|))) (forall ((v_ArrVal_921 (_ BitVec 32)) (v_ArrVal_917 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_918 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_918) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (select (store |c_#length| |v_ldv_malloc_#res.base_165| v_ArrVal_921) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_917) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))))))) is different from false [2022-12-13 14:11:48,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1305769666] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:11:48,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:11:48,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2022-12-13 14:11:48,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914690408] [2022-12-13 14:11:48,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:11:48,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-13 14:11:48,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:11:48,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-13 14:11:48,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2049, Unknown=24, NotChecked=480, Total=2756 [2022-12-13 14:11:48,352 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand has 46 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 38 states have internal predecessors, (63), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-13 14:11:50,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:11:52,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:11:54,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:12:03,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:12:03,315 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2022-12-13 14:12:03,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 14:12:03,316 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 38 states have internal predecessors, (63), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 41 [2022-12-13 14:12:03,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:12:03,316 INFO L225 Difference]: With dead ends: 79 [2022-12-13 14:12:03,317 INFO L226 Difference]: Without dead ends: 79 [2022-12-13 14:12:03,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=424, Invalid=3604, Unknown=24, NotChecked=640, Total=4692 [2022-12-13 14:12:03,318 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 188 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 32 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-12-13 14:12:03,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 649 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1132 Invalid, 3 Unknown, 148 Unchecked, 9.7s Time] [2022-12-13 14:12:03,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-12-13 14:12:03,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2022-12-13 14:12:03,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 68 states have internal predecessors, (69), 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) [2022-12-13 14:12:03,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2022-12-13 14:12:03,321 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 41 [2022-12-13 14:12:03,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:12:03,321 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2022-12-13 14:12:03,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 38 states have internal predecessors, (63), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-13 14:12:03,322 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2022-12-13 14:12:03,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 14:12:03,322 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:12:03,322 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:12:03,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-12-13 14:12:03,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (43)] Ended with exit code 0 [2022-12-13 14:12:03,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:12:03,724 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:12:03,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:12:03,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2050699743, now seen corresponding path program 1 times [2022-12-13 14:12:03,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:12:03,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871077191] [2022-12-13 14:12:03,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:12:03,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:12:03,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:12:03,728 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:12:03,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-12-13 14:12:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:12:03,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-13 14:12:03,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:12:03,980 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:12:04,141 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:12:04,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:12:04,200 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:12:04,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:12:04,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-13 14:12:04,677 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:12:04,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 14:12:04,872 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 14:12:04,872 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-12-13 14:12:04,879 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 37 [2022-12-13 14:12:05,656 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:12:06,184 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-12-13 14:12:06,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 124 treesize of output 79 [2022-12-13 14:12:06,243 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-13 14:12:06,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 76 [2022-12-13 14:12:06,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-12-13 14:12:06,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 88 [2022-12-13 14:12:07,709 INFO L321 Elim1Store]: treesize reduction 40, result has 74.5 percent of original size [2022-12-13 14:12:07,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 113 treesize of output 178 [2022-12-13 14:12:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:12:09,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:12:10,509 INFO L321 Elim1Store]: treesize reduction 7, result has 82.9 percent of original size [2022-12-13 14:12:10,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 125 [2022-12-13 14:12:10,540 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_960 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_alloc_10_#t~ret40#1.base_40| (_ BitVec 32))) (let ((.cse0 (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| |v_ULTIMATE.start_alloc_10_#t~ret40#1.base_40|)))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_960) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) (or (= |v_ULTIMATE.start_alloc_10_#t~ret40#1.base_40| .cse0) (= |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| .cse0)))) is different from false [2022-12-13 14:12:10,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:12:10,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871077191] [2022-12-13 14:12:10,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871077191] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:12:10,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1092905397] [2022-12-13 14:12:10,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:12:10,545 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:12:10,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:12:10,546 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:12:10,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2022-12-13 14:12:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:12:10,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-13 14:12:10,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:12:10,792 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:12:11,449 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 14:12:11,449 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-12-13 14:12:11,633 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:12:11,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:12:12,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 14:12:26,525 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-13 14:12:26,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-12-13 14:12:26,885 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 14:12:26,885 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 36 [2022-12-13 14:12:26,893 INFO L350 Elim1Store]: Elim1 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 47 treesize of output 47 [2022-12-13 14:12:30,716 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-12-13 14:12:30,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 83 [2022-12-13 14:12:30,753 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 14:12:30,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 73 [2022-12-13 14:12:31,344 INFO L350 Elim1Store]: Elim1 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 63 treesize of output 47 [2022-12-13 14:12:33,630 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 14:12:33,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 26 [2022-12-13 14:12:33,636 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:12:33,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:12:33,691 INFO L321 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2022-12-13 14:12:33,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2022-12-13 14:12:33,707 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_997 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_998 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_998))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_997) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) is different from false [2022-12-13 14:12:33,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1092905397] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:12:33,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:12:33,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 41 [2022-12-13 14:12:33,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247749381] [2022-12-13 14:12:33,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:12:33,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-13 14:12:33,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:12:33,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-13 14:12:33,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1929, Unknown=9, NotChecked=178, Total=2256 [2022-12-13 14:12:33,722 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand has 42 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 35 states have internal predecessors, (63), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-13 14:12:35,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:12:38,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:12:40,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:12:42,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:12:48,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:12:50,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:13:04,289 WARN L233 SmtUtils]: Spent 8.08s on a formula simplification. DAG size of input: 35 DAG size of output: 32 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:13:12,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:13:12,953 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2022-12-13 14:13:12,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 14:13:12,954 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 35 states have internal predecessors, (63), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 42 [2022-12-13 14:13:12,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:13:12,954 INFO L225 Difference]: With dead ends: 80 [2022-12-13 14:13:12,954 INFO L226 Difference]: Without dead ends: 80 [2022-12-13 14:13:12,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 46.9s TimeCoverageRelationStatistics Valid=517, Invalid=4309, Unknown=12, NotChecked=274, Total=5112 [2022-12-13 14:13:12,955 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 271 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 51 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-12-13 14:13:12,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 800 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1182 Invalid, 6 Unknown, 0 Unchecked, 16.5s Time] [2022-12-13 14:13:12,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-13 14:13:12,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2022-12-13 14:13:12,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 67 states have internal predecessors, (68), 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) [2022-12-13 14:13:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2022-12-13 14:13:12,957 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 42 [2022-12-13 14:13:12,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:13:12,957 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2022-12-13 14:13:12,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 35 states have internal predecessors, (63), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-13 14:13:12,958 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2022-12-13 14:13:12,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 14:13:12,958 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:13:12,958 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:13:12,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (45)] Ended with exit code 0 [2022-12-13 14:13:13,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-12-13 14:13:13,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:13:13,360 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:13:13,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:13:13,361 INFO L85 PathProgramCache]: Analyzing trace with hash -2050699742, now seen corresponding path program 1 times [2022-12-13 14:13:13,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:13:13,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641410130] [2022-12-13 14:13:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:13:13,362 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:13:13,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:13:13,365 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:13:13,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-12-13 14:13:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:13:13,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 62 conjunts are in the unsatisfiable core [2022-12-13 14:13:13,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:13:13,570 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:13:13,740 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 14:13:13,740 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-12-13 14:13:13,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:13:13,820 INFO L350 Elim1Store]: Elim1 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 6 treesize of output 5 [2022-12-13 14:13:14,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 14:13:20,135 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:13:22,344 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-12-13 14:13:22,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-12-13 14:13:22,636 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 14:13:22,636 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 52 [2022-12-13 14:13:22,647 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 78 [2022-12-13 14:13:23,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2022-12-13 14:13:23,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2022-12-13 14:13:26,146 INFO L321 Elim1Store]: treesize reduction 18, result has 61.7 percent of original size [2022-12-13 14:13:26,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 47 [2022-12-13 14:13:26,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-12-13 14:13:26,487 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-12-13 14:13:26,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 94 [2022-12-13 14:13:26,559 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-12-13 14:13:26,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 87 [2022-12-13 14:13:27,107 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-12-13 14:13:27,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 46 [2022-12-13 14:13:27,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2022-12-13 14:13:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:13:27,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:13:28,153 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1038 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1037 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1037)) (.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1038))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse2 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select .cse0 .cse1) .cse2)) (select |c_#length| (select (select .cse3 .cse1) .cse2)))))) (forall ((v_ArrVal_1038 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1037 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1037))) (select (select .cse5 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1038) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (select (select .cse5 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))))) (bvule .cse4 (bvadd (_ bv4 32) .cse4))))) is different from false [2022-12-13 14:13:28,321 WARN L837 $PredicateComparison]: unable to prove that (and (or (forall ((|v_ldv_malloc_#res.base_175| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_175|)))) (forall ((v_ArrVal_1038 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1037 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1037))) (select (select .cse1 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1038) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (select (select .cse1 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) (forall ((|v_ldv_malloc_#res.base_175| (_ BitVec 32))) (or (forall ((v_ArrVal_1038 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1041 (_ BitVec 32)) (v_ArrVal_1037 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1037)) (.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1038))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse4 (select (select .cse2 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select .cse2 .cse3) .cse4)) (select (store |c_#length| |v_ldv_malloc_#res.base_175| v_ArrVal_1041) (select (select .cse5 .cse3) .cse4)))))) (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_175|)))))) is different from false [2022-12-13 14:13:28,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:13:28,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641410130] [2022-12-13 14:13:28,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641410130] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:13:28,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [585732367] [2022-12-13 14:13:28,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:13:28,329 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:13:28,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:13:28,330 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:13:28,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2022-12-13 14:13:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:13:28,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 59 conjunts are in the unsatisfiable core [2022-12-13 14:13:28,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:13:28,616 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:13:29,290 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 14:13:29,290 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-12-13 14:13:29,502 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:13:29,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:13:30,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 14:13:34,618 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-13 14:13:34,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-12-13 14:13:34,981 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 14:13:34,982 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 45 [2022-12-13 14:13:34,989 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 53 [2022-12-13 14:13:36,957 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-12-13 14:13:36,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 88 [2022-12-13 14:13:36,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:13:37,038 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-12-13 14:13:37,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 64 [2022-12-13 14:13:38,150 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-12-13 14:13:38,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 55 [2022-12-13 14:13:38,174 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 14:13:38,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 23 [2022-12-13 14:13:38,387 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:13:38,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:13:38,524 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 14:13:38,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 110 [2022-12-13 14:13:38,692 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1078)) (.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1079))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse2 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (or (= (bvadd (select (select .cse0 .cse1) .cse2) (_ bv4 32)) (_ bv0 32)) (= |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (select (select .cse3 .cse1) .cse2)))))) (forall ((v_prenex_28 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_29 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_prenex_28))) (select (select .cse5 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_prenex_29) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (select (select .cse5 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))))) (bvule .cse4 (bvadd (_ bv4 32) .cse4)))) (forall ((v_ArrVal_1078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1079 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1078))) (select (select .cse6 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1079) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (select (select .cse6 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (_ bv4 32)) (bvadd |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| (_ bv4 32))))) is different from false [2022-12-13 14:13:38,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [585732367] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:13:38,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:13:38,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21] total 43 [2022-12-13 14:13:38,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954287566] [2022-12-13 14:13:38,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:13:38,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-13 14:13:38,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:13:38,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-13 14:13:38,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2057, Unknown=34, NotChecked=282, Total=2550 [2022-12-13 14:13:38,739 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand has 44 states, 40 states have (on average 1.6) internal successors, (64), 36 states have internal predecessors, (64), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-13 14:13:40,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:13:42,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:13:44,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:13:46,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:13:48,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:13:51,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:14:02,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:14:07,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:14:09,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:14:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:14:13,850 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2022-12-13 14:14:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 14:14:13,852 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 40 states have (on average 1.6) internal successors, (64), 36 states have internal predecessors, (64), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 42 [2022-12-13 14:14:13,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:14:13,852 INFO L225 Difference]: With dead ends: 77 [2022-12-13 14:14:13,852 INFO L226 Difference]: Without dead ends: 77 [2022-12-13 14:14:13,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=422, Invalid=3711, Unknown=39, NotChecked=384, Total=4556 [2022-12-13 14:14:13,853 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 268 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 37 mSolverCounterUnsat, 37 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 37 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2022-12-13 14:14:13,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 611 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 990 Invalid, 37 Unknown, 0 Unchecked, 21.9s Time] [2022-12-13 14:14:13,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-13 14:14:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2022-12-13 14:14:13,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 66 states have internal predecessors, (67), 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) [2022-12-13 14:14:13,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2022-12-13 14:14:13,855 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 42 [2022-12-13 14:14:13,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:14:13,855 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2022-12-13 14:14:13,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 40 states have (on average 1.6) internal successors, (64), 36 states have internal predecessors, (64), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-13 14:14:13,856 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2022-12-13 14:14:13,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-13 14:14:13,856 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:14:13,856 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:14:13,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2022-12-13 14:14:14,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (47)] Ended with exit code 0 [2022-12-13 14:14:14,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:14:14,257 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:14:14,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:14:14,258 INFO L85 PathProgramCache]: Analyzing trace with hash 852817446, now seen corresponding path program 1 times [2022-12-13 14:14:14,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:14:14,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522680654] [2022-12-13 14:14:14,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:14:14,258 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:14:14,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:14:14,260 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:14:14,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-12-13 14:14:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:14:14,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-13 14:14:14,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:14:14,453 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:14:14,623 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 14:14:14,623 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-12-13 14:14:14,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:14:14,717 INFO L350 Elim1Store]: Elim1 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 6 treesize of output 5 [2022-12-13 14:14:14,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 14:14:23,168 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-13 14:14:23,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-12-13 14:14:23,386 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 14:14:23,386 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 36 [2022-12-13 14:14:23,394 INFO L350 Elim1Store]: Elim1 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 47 treesize of output 47 [2022-12-13 14:14:26,595 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-12-13 14:14:26,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 91 [2022-12-13 14:14:26,669 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-12-13 14:14:26,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 71 [2022-12-13 14:14:27,150 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-12-13 14:14:27,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 45 [2022-12-13 14:14:29,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-12-13 14:14:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:14:29,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:14:32,139 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1115 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| |c_ULTIMATE.start_alloc_10_#t~ret40#1.offset|))) (.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1115))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse3 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select .cse0 (select (select .cse1 .cse2) .cse3)) (select (select .cse0 .cse2) .cse3)))) (_ bv0 32))) is different from false [2022-12-13 14:14:32,183 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1115 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| (_ bv0 32)))) (.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1115))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse3 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select .cse0 (select (select .cse1 .cse2) .cse3)) (select (select .cse0 .cse2) .cse3)))))) is different from false [2022-12-13 14:14:32,186 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:14:32,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522680654] [2022-12-13 14:14:32,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522680654] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:14:32,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [714963680] [2022-12-13 14:14:32,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:14:32,187 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:14:32,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:14:32,188 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:14:32,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2022-12-13 14:14:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:14:32,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-13 14:14:32,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:14:32,447 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:14:35,111 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 14:14:35,112 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-12-13 14:14:35,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:14:35,309 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:14:35,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 14:14:40,203 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-13 14:14:40,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-12-13 14:14:40,583 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 14:14:40,583 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 45 [2022-12-13 14:14:40,591 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 53 [2022-12-13 14:14:42,949 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-12-13 14:14:42,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 85 [2022-12-13 14:14:43,025 INFO L321 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2022-12-13 14:14:43,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 74 [2022-12-13 14:14:44,036 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-12-13 14:14:44,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 44 [2022-12-13 14:14:44,563 INFO L321 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2022-12-13 14:14:44,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 25 [2022-12-13 14:14:44,570 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:14:44,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:14:44,623 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1154 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| |c_ULTIMATE.start_alloc_10_#t~ret40#1.offset|))) (.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1154))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse3 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select .cse0 (select (select .cse1 .cse2) .cse3)) (select (select .cse0 .cse2) .cse3)))) (_ bv0 32))) is different from false [2022-12-13 14:14:44,667 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1154 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| (_ bv0 32)))) (.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1154))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse3 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select .cse0 (select (select .cse1 .cse2) .cse3)) (select (select .cse0 .cse2) .cse3)))) (_ bv0 32))) is different from false [2022-12-13 14:14:44,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [714963680] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:14:44,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:14:44,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 45 [2022-12-13 14:14:44,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061982481] [2022-12-13 14:14:44,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:14:44,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-13 14:14:44,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:14:44,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-13 14:14:44,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2258, Unknown=12, NotChecked=396, Total=2862 [2022-12-13 14:14:44,674 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand has 46 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 38 states have internal predecessors, (65), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-13 14:14:46,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:14:48,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:14:50,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:14:52,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:14:54,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:14:56,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:14:58,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:15:00,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:15:03,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:15:07,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:15:15,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:15:15,445 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2022-12-13 14:15:15,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 14:15:15,446 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 38 states have internal predecessors, (65), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 43 [2022-12-13 14:15:15,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:15:15,447 INFO L225 Difference]: With dead ends: 76 [2022-12-13 14:15:15,447 INFO L226 Difference]: Without dead ends: 76 [2022-12-13 14:15:15,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1266 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=537, Invalid=4297, Unknown=12, NotChecked=556, Total=5402 [2022-12-13 14:15:15,449 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 286 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 39 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2022-12-13 14:15:15,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 581 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 929 Invalid, 10 Unknown, 0 Unchecked, 23.8s Time] [2022-12-13 14:15:15,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-12-13 14:15:15,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2022-12-13 14:15:15,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 65 states have internal predecessors, (66), 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) [2022-12-13 14:15:15,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2022-12-13 14:15:15,453 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 43 [2022-12-13 14:15:15,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:15:15,453 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2022-12-13 14:15:15,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 38 states have internal predecessors, (65), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-13 14:15:15,453 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2022-12-13 14:15:15,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 14:15:15,454 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:15:15,454 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:15:15,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-12-13 14:15:15,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (49)] Ended with exit code 0 [2022-12-13 14:15:15,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:15:15,855 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:15:15,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:15:15,856 INFO L85 PathProgramCache]: Analyzing trace with hash 667537153, now seen corresponding path program 1 times [2022-12-13 14:15:15,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:15:15,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249885753] [2022-12-13 14:15:15,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:15,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:15:15,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:15:15,858 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:15:15,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-12-13 14:15:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:16,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-13 14:15:16,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:15:16,070 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:15:16,251 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 14:15:16,252 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-12-13 14:15:16,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:15:16,342 INFO L350 Elim1Store]: Elim1 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 6 treesize of output 5 [2022-12-13 14:15:16,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 14:15:24,761 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-13 14:15:24,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-12-13 14:15:24,973 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 14:15:24,974 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 36 [2022-12-13 14:15:24,981 INFO L350 Elim1Store]: Elim1 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 47 treesize of output 47 [2022-12-13 14:15:28,273 INFO L321 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2022-12-13 14:15:28,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 61 [2022-12-13 14:15:28,338 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-12-13 14:15:28,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 86 [2022-12-13 14:15:28,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 61 [2022-12-13 14:15:29,149 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-12-13 14:15:29,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 25 [2022-12-13 14:15:29,262 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:15:29,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:15:30,584 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_10_#t~ret40#1.base_58| (_ BitVec 32)) (v_ArrVal_1190 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1190)) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| |v_ULTIMATE.start_alloc_10_#t~ret40#1.base_58|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select .cse0 (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2)))) |v_ULTIMATE.start_alloc_10_#t~ret40#1.base_58|)) is different from false [2022-12-13 14:15:30,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:15:30,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249885753] [2022-12-13 14:15:30,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249885753] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:15:30,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [80225108] [2022-12-13 14:15:30,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:15:30,589 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:15:30,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:15:30,590 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:15:30,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2022-12-13 14:15:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:15:30,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-13 14:15:30,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:15:30,878 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:15:31,392 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 14:15:31,392 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-12-13 14:15:31,587 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:15:31,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:15:32,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 14:15:44,471 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-13 14:15:44,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-12-13 14:15:44,835 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 14:15:44,835 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 45 [2022-12-13 14:15:44,842 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 50 [2022-12-13 14:15:53,537 INFO L321 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2022-12-13 14:15:53,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 61 [2022-12-13 14:15:53,609 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-12-13 14:15:53,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 86 [2022-12-13 14:15:54,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 61 [2022-12-13 14:15:56,996 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-12-13 14:15:56,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 25 [2022-12-13 14:15:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:15:57,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:15:57,088 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1230 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1230)) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| |c_ULTIMATE.start_alloc_10_#t~ret40#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select .cse0 (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2)))) |c_#StackHeapBarrier|)) is different from false [2022-12-13 14:15:57,143 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_10_#t~ret40#1.base_61| (_ BitVec 32)) (v_ArrVal_1230 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1230)) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| |v_ULTIMATE.start_alloc_10_#t~ret40#1.base_61|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select .cse0 (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2)))) |v_ULTIMATE.start_alloc_10_#t~ret40#1.base_61|)) is different from false [2022-12-13 14:15:57,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [80225108] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:15:57,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:15:57,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 44 [2022-12-13 14:15:57,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611379670] [2022-12-13 14:15:57,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:15:57,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-13 14:15:57,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:15:57,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-13 14:15:57,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2247, Unknown=22, NotChecked=294, Total=2756 [2022-12-13 14:15:57,150 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand has 45 states, 40 states have (on average 1.6) internal successors, (64), 37 states have internal predecessors, (64), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-13 14:15:59,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:16:01,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:16:03,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:16:05,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:16:07,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:16:09,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:16:11,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:16:17,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:16:19,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:16:21,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:16:24,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:16:39,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:16:39,301 INFO L93 Difference]: Finished difference Result 113 states and 112 transitions. [2022-12-13 14:16:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-13 14:16:39,302 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 40 states have (on average 1.6) internal successors, (64), 37 states have internal predecessors, (64), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 44 [2022-12-13 14:16:39,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:16:39,303 INFO L225 Difference]: With dead ends: 113 [2022-12-13 14:16:39,303 INFO L226 Difference]: Without dead ends: 113 [2022-12-13 14:16:39,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1335 ImplicationChecksByTransitivity, 52.4s TimeCoverageRelationStatistics Valid=569, Invalid=4530, Unknown=25, NotChecked=426, Total=5550 [2022-12-13 14:16:39,304 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 479 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 48 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.9s IncrementalHoareTripleChecker+Time [2022-12-13 14:16:39,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 583 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1162 Invalid, 11 Unknown, 0 Unchecked, 27.9s Time] [2022-12-13 14:16:39,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-12-13 14:16:39,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 84. [2022-12-13 14:16:39,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 74 states have internal predecessors, (75), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-13 14:16:39,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2022-12-13 14:16:39,306 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 44 [2022-12-13 14:16:39,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:16:39,306 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2022-12-13 14:16:39,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 40 states have (on average 1.6) internal successors, (64), 37 states have internal predecessors, (64), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-13 14:16:39,306 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2022-12-13 14:16:39,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 14:16:39,307 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:16:39,307 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:16:39,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Ended with exit code 0 [2022-12-13 14:16:39,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (51)] Ended with exit code 0 [2022-12-13 14:16:39,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:16:39,709 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:16:39,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:16:39,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1129414206, now seen corresponding path program 1 times [2022-12-13 14:16:39,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:16:39,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940237761] [2022-12-13 14:16:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:16:39,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:16:39,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:16:39,714 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:16:39,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-12-13 14:16:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:16:39,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 72 conjunts are in the unsatisfiable core [2022-12-13 14:16:39,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:16:40,139 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 14:16:40,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 37 [2022-12-13 14:16:40,376 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:16:40,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2022-12-13 14:16:40,711 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-12-13 14:16:40,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 53 [2022-12-13 14:16:41,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2022-12-13 14:16:41,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:16:41,543 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:16:41,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2022-12-13 14:16:42,088 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-12-13 14:16:42,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 53 [2022-12-13 14:16:42,641 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 14:16:42,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 49 [2022-12-13 14:16:42,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 61 [2022-12-13 14:16:44,080 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 14:16:44,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2022-12-13 14:16:45,400 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-12-13 14:16:45,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 153 treesize of output 88 [2022-12-13 14:16:45,467 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-13 14:16:45,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 72 [2022-12-13 14:16:45,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-12-13 14:16:47,247 INFO L321 Elim1Store]: treesize reduction 12, result has 85.9 percent of original size [2022-12-13 14:16:47,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 218 treesize of output 237 [2022-12-13 14:17:35,379 WARN L233 SmtUtils]: Spent 13.79s on a formula simplification. DAG size of input: 229 DAG size of output: 80 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:17:38,697 INFO L321 Elim1Store]: treesize reduction 141, result has 73.1 percent of original size [2022-12-13 14:17:38,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 45 case distinctions, treesize of input 267 treesize of output 534 [2022-12-13 14:17:38,857 INFO L217 Elim1Store]: Index analysis took 116 ms [2022-12-13 14:17:39,522 INFO L321 Elim1Store]: treesize reduction 42, result has 70.2 percent of original size [2022-12-13 14:17:39,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 155 treesize of output 241 [2022-12-13 14:17:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:17:42,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:17:43,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:17:43,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940237761] [2022-12-13 14:17:43,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940237761] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:17:43,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [485288381] [2022-12-13 14:17:43,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:17:43,545 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:17:43,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:17:43,546 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:17:43,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (53)] Waiting until timeout for monitored process [2022-12-13 14:17:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:17:43,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 75 conjunts are in the unsatisfiable core [2022-12-13 14:17:43,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:17:44,297 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 14:17:44,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-13 14:17:44,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 14:17:45,250 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-12-13 14:17:45,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-12-13 14:17:45,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2022-12-13 14:17:45,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-12-13 14:17:46,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-12-13 14:17:47,343 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:17:47,863 INFO L321 Elim1Store]: treesize reduction 18, result has 48.6 percent of original size [2022-12-13 14:17:47,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 35 [2022-12-13 14:17:48,500 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 14:17:48,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 49 [2022-12-13 14:17:48,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 75 [2022-12-13 14:17:50,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 17 treesize of output 3 [2022-12-13 14:17:52,478 INFO L321 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2022-12-13 14:17:52,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 166 treesize of output 85 [2022-12-13 14:17:52,549 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-12-13 14:17:52,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 134 treesize of output 122 [2022-12-13 14:17:54,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 89 [2022-12-13 14:17:54,660 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-12-13 14:17:54,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 43 [2022-12-13 14:17:54,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:17:54,864 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:17:54,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:17:58,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [485288381] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:17:58,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:17:58,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26] total 49 [2022-12-13 14:17:58,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371306850] [2022-12-13 14:17:58,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:17:58,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-13 14:17:58,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:17:58,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-13 14:17:58,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=3776, Unknown=14, NotChecked=0, Total=4032 [2022-12-13 14:17:58,139 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand has 51 states, 46 states have (on average 1.5) internal successors, (69), 41 states have internal predecessors, (69), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 14:18:00,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:18:28,437 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 208 DAG size of output: 169 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:18:36,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:18:36,813 INFO L93 Difference]: Finished difference Result 110 states and 109 transitions. [2022-12-13 14:18:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-13 14:18:36,814 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 46 states have (on average 1.5) internal successors, (69), 41 states have internal predecessors, (69), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 44 [2022-12-13 14:18:36,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:18:36,815 INFO L225 Difference]: With dead ends: 110 [2022-12-13 14:18:36,815 INFO L226 Difference]: Without dead ends: 110 [2022-12-13 14:18:36,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2480 ImplicationChecksByTransitivity, 58.2s TimeCoverageRelationStatistics Valid=749, Invalid=7979, Unknown=14, NotChecked=0, Total=8742 [2022-12-13 14:18:36,817 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 241 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 49 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-12-13 14:18:36,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 957 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2169 Invalid, 3 Unknown, 0 Unchecked, 10.6s Time] [2022-12-13 14:18:36,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-12-13 14:18:36,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 86. [2022-12-13 14:18:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.203125) internal successors, (77), 76 states have internal predecessors, (77), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-13 14:18:36,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2022-12-13 14:18:36,819 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 44 [2022-12-13 14:18:36,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:18:36,820 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2022-12-13 14:18:36,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 46 states have (on average 1.5) internal successors, (69), 41 states have internal predecessors, (69), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 14:18:36,820 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2022-12-13 14:18:36,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 14:18:36,820 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:18:36,820 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:18:36,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-12-13 14:18:37,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (53)] Forceful destruction successful, exit code 0 [2022-12-13 14:18:37,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:18:37,221 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-12-13 14:18:37,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:18:37,221 INFO L85 PathProgramCache]: Analyzing trace with hash -781184632, now seen corresponding path program 1 times [2022-12-13 14:18:37,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:18:37,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446872936] [2022-12-13 14:18:37,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:18:37,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:18:37,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:18:37,223 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:18:37,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-12-13 14:18:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:18:37,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 52 conjunts are in the unsatisfiable core [2022-12-13 14:18:37,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:18:37,421 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:18:37,585 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 14:18:37,585 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-12-13 14:18:37,645 INFO L350 Elim1Store]: Elim1 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 6 treesize of output 5 [2022-12-13 14:18:37,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:18:37,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 14:18:46,062 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-13 14:18:46,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-12-13 14:18:46,254 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 14:18:46,254 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 36 [2022-12-13 14:18:46,262 INFO L350 Elim1Store]: Elim1 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 47 treesize of output 47 [2022-12-13 14:18:48,972 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:18:49,420 INFO L321 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2022-12-13 14:18:49,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 61 [2022-12-13 14:18:49,478 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-12-13 14:18:49,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 90 [2022-12-13 14:18:50,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 65 [2022-12-13 14:18:50,284 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-12-13 14:18:50,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 29 [2022-12-13 14:18:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:18:50,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:18:52,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 152 [2022-12-13 14:18:52,120 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_10_#t~ret40#1.base_70| (_ BitVec 32)) (v_ArrVal_1344 (Array (_ BitVec 32) (_ BitVec 32)))) (= |v_ULTIMATE.start_alloc_10_#t~ret40#1.base_70| (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1344)) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| |v_ULTIMATE.start_alloc_10_#t~ret40#1.base_70|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select .cse0 (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2)))))) is different from false [2022-12-13 14:18:52,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:18:52,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446872936] [2022-12-13 14:18:52,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446872936] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:18:52,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1615418580] [2022-12-13 14:18:52,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:18:52,125 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:18:52,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:18:52,126 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:18:52,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a2194dd-efde-49bd-bf97-9c1bb58d7a75/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (55)] Waiting until timeout for monitored process [2022-12-13 14:18:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:18:52,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 59 conjunts are in the unsatisfiable core [2022-12-13 14:18:52,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:18:52,449 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:18:52,897 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 14:18:52,897 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 27 [2022-12-13 14:18:53,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 14:18:53,082 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 14:18:53,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 14:19:05,960 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-13 14:19:05,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-12-13 14:19:06,338 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-12-13 14:19:06,338 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 45 [2022-12-13 14:19:06,348 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 50 [2022-12-13 14:19:13,961 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-13 14:19:14,767 INFO L321 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2022-12-13 14:19:14,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 61 [2022-12-13 14:19:14,833 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-12-13 14:19:14,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 90 [2022-12-13 14:19:15,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 65 [2022-12-13 14:19:16,189 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-12-13 14:19:16,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 29 [2022-12-13 14:19:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:19:16,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:19:16,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 152 [2022-12-13 14:19:16,860 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_10_#t~ret40#1.base_73| (_ BitVec 32)) (v_ArrVal_1344 (Array (_ BitVec 32) (_ BitVec 32)))) (= |v_ULTIMATE.start_alloc_10_#t~ret40#1.base_73| (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1344)) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| |v_ULTIMATE.start_alloc_10_#t~ret40#1.base_73|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select .cse0 (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2)))))) is different from false [2022-12-13 14:19:16,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1615418580] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:19:16,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:19:16,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 44 [2022-12-13 14:19:16,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396861489] [2022-12-13 14:19:16,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:19:16,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-13 14:19:16,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:19:16,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-13 14:19:16,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2239, Unknown=26, NotChecked=194, Total=2652 [2022-12-13 14:19:16,866 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand has 45 states, 40 states have (on average 1.625) internal successors, (65), 37 states have internal predecessors, (65), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-13 14:19:18,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:19:21,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:19:23,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:19:25,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:19:27,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:19:29,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:19:31,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:19:37,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:19:39,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:19:42,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 14:19:50,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]