./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a 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_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R --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 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 --- 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-38b53e6 [2022-11-25 15:35:14,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:35:14,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:35:14,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:35:14,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:35:14,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:35:14,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:35:14,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:35:14,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:35:14,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:35:14,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:35:14,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:35:14,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:35:14,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:35:14,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:35:14,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:35:14,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:35:14,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:35:14,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:35:14,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:35:14,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:35:14,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:35:14,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:35:14,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:35:14,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:35:14,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:35:14,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:35:14,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:35:14,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:35:14,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:35:14,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:35:14,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:35:14,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:35:14,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:35:14,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:35:14,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:35:14,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:35:14,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:35:14,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:35:14,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:35:14,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:35:14,994 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 15:35:15,052 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:35:15,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:35:15,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:35:15,055 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:35:15,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:35:15,057 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:35:15,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:35:15,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:35:15,058 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:35:15,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:35:15,060 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:35:15,060 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:35:15,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:35:15,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:35:15,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:35:15,062 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 15:35:15,062 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 15:35:15,062 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 15:35:15,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:35:15,063 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:35:15,063 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:35:15,063 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:35:15,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:35:15,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:35:15,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:35:15,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:35:15,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:35:15,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:35:15,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:35:15,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:35:15,068 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:35:15,068 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:35:15,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:35:15,069 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_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 [2022-11-25 15:35:15,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:35:15,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:35:15,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:35:15,461 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:35:15,462 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:35:15,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2022-11-25 15:35:19,252 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:35:19,604 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:35:19,605 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2022-11-25 15:35:19,623 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/data/77f003c13/29237572e19c41c9893628e3fdd8bae5/FLAG4912fae71 [2022-11-25 15:35:19,640 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/data/77f003c13/29237572e19c41c9893628e3fdd8bae5 [2022-11-25 15:35:19,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:35:19,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:35:19,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:35:19,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:35:19,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:35:19,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:35:19" (1/1) ... [2022-11-25 15:35:19,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21c68ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:35:19, skipping insertion in model container [2022-11-25 15:35:19,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:35:19" (1/1) ... [2022-11-25 15:35:19,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:35:19,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:35:20,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:35:20,284 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) [2022-11-25 15:35:20,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@211e4b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:35:20, skipping insertion in model container [2022-11-25 15:35:20,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:35:20,286 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 15:35:20,291 INFO L158 Benchmark]: Toolchain (without parser) took 644.33ms. Allocated memory is still 148.9MB. Free memory was 101.5MB in the beginning and 87.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 15:35:20,292 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 148.9MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:35:20,294 INFO L158 Benchmark]: CACSL2BoogieTranslator took 638.92ms. Allocated memory is still 148.9MB. Free memory was 101.5MB in the beginning and 87.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 15:35:20,296 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 148.9MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 638.92ms. Allocated memory is still 148.9MB. Free memory was 101.5MB in the beginning and 87.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. 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_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R --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 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 --- 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-38b53e6 [2022-11-25 15:35:23,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:35:23,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:35:23,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:35:23,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:35:23,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:35:23,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:35:23,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:35:23,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:35:23,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:35:23,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:35:23,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:35:23,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:35:23,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:35:23,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:35:23,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:35:23,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:35:23,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:35:23,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:35:23,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:35:23,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:35:23,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:35:23,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:35:23,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:35:23,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:35:23,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:35:23,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:35:23,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:35:23,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:35:23,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:35:23,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:35:23,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:35:23,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:35:23,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:35:23,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:35:23,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:35:23,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:35:23,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:35:23,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:35:23,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:35:23,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:35:23,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 15:35:23,223 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:35:23,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:35:23,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:35:23,230 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:35:23,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:35:23,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:35:23,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:35:23,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:35:23,232 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:35:23,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:35:23,234 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:35:23,235 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:35:23,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:35:23,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:35:23,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:35:23,237 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 15:35:23,237 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 15:35:23,237 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 15:35:23,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:35:23,238 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:35:23,238 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 15:35:23,238 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 15:35:23,239 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:35:23,239 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:35:23,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:35:23,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:35:23,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:35:23,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:35:23,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:35:23,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:35:23,242 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 15:35:23,242 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 15:35:23,242 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:35:23,243 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:35:23,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:35:23,244 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 15:35:23,245 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_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 [2022-11-25 15:35:23,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:35:23,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:35:23,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:35:23,764 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:35:23,765 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:35:23,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2022-11-25 15:35:27,232 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:35:27,679 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:35:27,685 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2022-11-25 15:35:27,723 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/data/d82c76068/911bf038d2824a2bb2232434f424388a/FLAG7fd851099 [2022-11-25 15:35:27,751 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/data/d82c76068/911bf038d2824a2bb2232434f424388a [2022-11-25 15:35:27,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:35:27,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:35:27,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:35:27,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:35:27,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:35:27,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:35:27" (1/1) ... [2022-11-25 15:35:27,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f1b5f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:35:27, skipping insertion in model container [2022-11-25 15:35:27,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:35:27" (1/1) ... [2022-11-25 15:35:27,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:35:27,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:35:28,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:35:28,438 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 15:35:28,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:35:28,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:35:28,586 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:35:28,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:35:28,798 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:35:28,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:35:28 WrapperNode [2022-11-25 15:35:28,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:35:28,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:35:28,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:35:28,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:35:28,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:35:28" (1/1) ... [2022-11-25 15:35:28,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:35:28" (1/1) ... [2022-11-25 15:35:28,919 INFO L138 Inliner]: procedures = 169, calls = 88, calls flagged for inlining = 26, calls inlined = 8, statements flattened = 96 [2022-11-25 15:35:28,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:35:28,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:35:28,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:35:28,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:35:28,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:35:28" (1/1) ... [2022-11-25 15:35:28,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:35:28" (1/1) ... [2022-11-25 15:35:28,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:35:28" (1/1) ... [2022-11-25 15:35:28,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:35:28" (1/1) ... [2022-11-25 15:35:28,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:35:28" (1/1) ... [2022-11-25 15:35:28,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:35:28" (1/1) ... [2022-11-25 15:35:28,985 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:35:28" (1/1) ... [2022-11-25 15:35:28,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:35:28" (1/1) ... [2022-11-25 15:35:28,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:35:28,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:35:28,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:35:28,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:35:28,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:35:28" (1/1) ... [2022-11-25 15:35:29,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:35:29,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:35:29,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:35:29,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:35:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-25 15:35:29,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-25 15:35:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_i2c_set_clientdata [2022-11-25 15:35:29,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_i2c_set_clientdata [2022-11-25 15:35:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 15:35:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:35:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 15:35:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 15:35:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:35:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 15:35:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:35:29,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:35:29,366 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:35:29,368 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:35:29,787 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:35:29,796 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:35:29,796 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 15:35:29,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:35:29 BoogieIcfgContainer [2022-11-25 15:35:29,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:35:29,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:35:29,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:35:29,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:35:29,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:35:27" (1/3) ... [2022-11-25 15:35:29,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d80322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:35:29, skipping insertion in model container [2022-11-25 15:35:29,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:35:28" (2/3) ... [2022-11-25 15:35:29,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d80322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:35:29, skipping insertion in model container [2022-11-25 15:35:29,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:35:29" (3/3) ... [2022-11-25 15:35:29,810 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test11_1.i [2022-11-25 15:35:29,846 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:35:29,846 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-25 15:35:29,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:35:29,925 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;@520f620b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:35:29,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2022-11-25 15:35:29,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 51 states have (on average 1.7058823529411764) internal successors, (87), 81 states have internal predecessors, (87), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 15:35:29,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 15:35:29,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:29,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:29,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:35:29,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:29,949 INFO L85 PathProgramCache]: Analyzing trace with hash 2113619829, now seen corresponding path program 1 times [2022-11-25 15:35:29,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:29,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767493688] [2022-11-25 15:35:29,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:29,966 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 [2022-11-25 15:35:29,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:29,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:35:30,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:30,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:35:30,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:35:30,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:35:30,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:30,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767493688] [2022-11-25 15:35:30,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767493688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:35:30,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:35:30,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:35:30,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070630425] [2022-11-25 15:35:30,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:35:30,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:35:30,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:35:30,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:35:30,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:35:30,262 INFO L87 Difference]: Start difference. First operand has 90 states, 51 states have (on average 1.7058823529411764) internal successors, (87), 81 states have internal predecessors, (87), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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) [2022-11-25 15:35:30,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:30,494 INFO L93 Difference]: Finished difference Result 167 states and 191 transitions. [2022-11-25 15:35:30,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:35:30,509 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 [2022-11-25 15:35:30,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:30,522 INFO L225 Difference]: With dead ends: 167 [2022-11-25 15:35:30,523 INFO L226 Difference]: Without dead ends: 163 [2022-11-25 15:35:30,527 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 [2022-11-25 15:35:30,539 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 73 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:30,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 478 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 15:35:30,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-25 15:35:30,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 92. [2022-11-25 15:35:30,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 82 states have internal predecessors, (88), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2022-11-25 15:35:30,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2022-11-25 15:35:30,599 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 11 [2022-11-25 15:35:30,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:30,600 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2022-11-25 15:35:30,600 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) [2022-11-25 15:35:30,600 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2022-11-25 15:35:30,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 15:35:30,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:30,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:30,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:30,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:30,819 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:35:30,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:30,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1293843786, now seen corresponding path program 1 times [2022-11-25 15:35:30,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:30,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339751010] [2022-11-25 15:35:30,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:30,821 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 [2022-11-25 15:35:30,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:30,822 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:35:30,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:30,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:35:30,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:30,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:35:30,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:35:30,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:30,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339751010] [2022-11-25 15:35:30,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339751010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:35:30,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:35:30,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:35:30,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323711667] [2022-11-25 15:35:30,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:35:30,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:35:30,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:35:30,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:35:30,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:35:30,952 INFO L87 Difference]: Start difference. First operand 92 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) [2022-11-25 15:35:31,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:31,321 INFO L93 Difference]: Finished difference Result 163 states and 186 transitions. [2022-11-25 15:35:31,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:35:31,322 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 [2022-11-25 15:35:31,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:31,324 INFO L225 Difference]: With dead ends: 163 [2022-11-25 15:35:31,324 INFO L226 Difference]: Without dead ends: 161 [2022-11-25 15:35:31,325 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 [2022-11-25 15:35:31,326 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 70 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:31,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 317 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 15:35:31,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-25 15:35:31,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 88. [2022-11-25 15:35:31,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 50 states have (on average 1.68) internal successors, (84), 79 states have internal predecessors, (84), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 15:35:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2022-11-25 15:35:31,339 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 11 [2022-11-25 15:35:31,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:31,340 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2022-11-25 15:35:31,340 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) [2022-11-25 15:35:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2022-11-25 15:35:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 15:35:31,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:31,342 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:31,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:35:31,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:31,555 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:35:31,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:31,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1793026591, now seen corresponding path program 1 times [2022-11-25 15:35:31,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:31,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273874455] [2022-11-25 15:35:31,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:31,558 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 [2022-11-25 15:35:31,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:31,560 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:35:31,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:31,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:35:31,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:35:31,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:35:31,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:31,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273874455] [2022-11-25 15:35:31,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273874455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:35:31,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:35:31,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:35:31,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523252548] [2022-11-25 15:35:31,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:35:31,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:35:31,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:35:31,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:35:31,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:35:31,700 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-25 15:35:31,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:31,820 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2022-11-25 15:35:31,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:35:31,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 17 [2022-11-25 15:35:31,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:31,823 INFO L225 Difference]: With dead ends: 160 [2022-11-25 15:35:31,823 INFO L226 Difference]: Without dead ends: 160 [2022-11-25 15:35:31,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:35:31,825 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 68 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:31,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 369 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:35:31,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-25 15:35:31,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 92. [2022-11-25 15:35:31,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 53 states have (on average 1.6415094339622642) internal successors, (87), 82 states have internal predecessors, (87), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2022-11-25 15:35:31,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2022-11-25 15:35:31,839 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 17 [2022-11-25 15:35:31,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:31,839 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2022-11-25 15:35:31,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-25 15:35:31,840 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2022-11-25 15:35:31,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 15:35:31,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:31,841 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:31,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:35:32,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:32,055 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:35:32,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:32,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1793026607, now seen corresponding path program 1 times [2022-11-25 15:35:32,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:32,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103692636] [2022-11-25 15:35:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:32,058 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 [2022-11-25 15:35:32,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:32,059 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:35:32,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:32,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 15:35:32,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:32,199 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 [2022-11-25 15:35:32,308 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_12 (_ BitVec 1))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_12) |c_#valid|)))) is different from true [2022-11-25 15:35:32,420 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 15:35:32,421 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 [2022-11-25 15:35:32,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-25 15:35:32,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:35:32,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:32,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103692636] [2022-11-25 15:35:32,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103692636] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:35:32,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:35:32,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2022-11-25 15:35:32,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614135696] [2022-11-25 15:35:32,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:35:32,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:35:32,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:35:32,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:35:32,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2022-11-25 15:35:32,849 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2022-11-25 15:35:33,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:33,365 INFO L93 Difference]: Finished difference Result 133 states and 148 transitions. [2022-11-25 15:35:33,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:35:33,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 17 [2022-11-25 15:35:33,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:33,367 INFO L225 Difference]: With dead ends: 133 [2022-11-25 15:35:33,367 INFO L226 Difference]: Without dead ends: 133 [2022-11-25 15:35:33,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72 [2022-11-25 15:35:33,368 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 74 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:33,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 226 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 235 Invalid, 0 Unknown, 101 Unchecked, 0.4s Time] [2022-11-25 15:35:33,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-25 15:35:33,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 103. [2022-11-25 15:35:33,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 63 states have (on average 1.6031746031746033) internal successors, (101), 90 states have internal predecessors, (101), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-25 15:35:33,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 120 transitions. [2022-11-25 15:35:33,392 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 120 transitions. Word has length 17 [2022-11-25 15:35:33,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:33,394 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 120 transitions. [2022-11-25 15:35:33,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2022-11-25 15:35:33,398 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 120 transitions. [2022-11-25 15:35:33,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 15:35:33,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:33,400 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:33,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:35:33,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:33,601 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:35:33,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:33,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1793026606, now seen corresponding path program 1 times [2022-11-25 15:35:33,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:33,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995575045] [2022-11-25 15:35:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:33,602 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 [2022-11-25 15:35:33,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:33,610 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:35:33,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 (6)] Waiting until timeout for monitored process [2022-11-25 15:35:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:33,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 15:35:33,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:33,743 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 [2022-11-25 15:35:33,755 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 [2022-11-25 15:35:33,937 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_23 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_23))))) is different from true [2022-11-25 15:35:33,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:35:33,973 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 [2022-11-25 15:35:33,990 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:35:33,990 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 [2022-11-25 15:35:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-25 15:35:34,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:36,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:36,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995575045] [2022-11-25 15:35:36,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995575045] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:35:36,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [642200725] [2022-11-25 15:35:36,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:36,396 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:35:36,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:35:36,403 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:35:36,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-25 15:35:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:36,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 15:35:36,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:36,598 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 [2022-11-25 15:35:36,607 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 [2022-11-25 15:35:36,743 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_33 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_33) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-25 15:35:36,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:35:36,779 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 14 [2022-11-25 15:35:36,798 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:35:36,799 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 [2022-11-25 15:35:36,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-25 15:35:36,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:37,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [642200725] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:35:37,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:35:37,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-11-25 15:35:37,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692104025] [2022-11-25 15:35:37,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:35:37,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 15:35:37,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:35:37,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 15:35:37,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=70, Unknown=3, NotChecked=34, Total=132 [2022-11-25 15:35:37,107 INFO L87 Difference]: Start difference. First operand 103 states and 120 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 15:35:38,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:38,520 INFO L93 Difference]: Finished difference Result 226 states and 255 transitions. [2022-11-25 15:35:38,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 15:35:38,521 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2022-11-25 15:35:38,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:38,523 INFO L225 Difference]: With dead ends: 226 [2022-11-25 15:35:38,523 INFO L226 Difference]: Without dead ends: 226 [2022-11-25 15:35:38,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=33, Invalid=104, Unknown=3, NotChecked=42, Total=182 [2022-11-25 15:35:38,524 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 145 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 423 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:38,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 473 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 530 Invalid, 0 Unknown, 423 Unchecked, 1.2s Time] [2022-11-25 15:35:38,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-25 15:35:38,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 148. [2022-11-25 15:35:38,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 103 states have (on average 1.6601941747572815) internal successors, (171), 130 states have internal predecessors, (171), 12 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (20), 15 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-25 15:35:38,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 203 transitions. [2022-11-25 15:35:38,554 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 203 transitions. Word has length 17 [2022-11-25 15:35:38,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:38,555 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 203 transitions. [2022-11-25 15:35:38,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 15:35:38,556 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 203 transitions. [2022-11-25 15:35:38,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 15:35:38,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:38,557 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:38,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:35:38,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 (6)] Ended with exit code 0 [2022-11-25 15:35:38,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:38,961 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:35:38,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:38,961 INFO L85 PathProgramCache]: Analyzing trace with hash -2086429614, now seen corresponding path program 1 times [2022-11-25 15:35:38,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:38,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462796332] [2022-11-25 15:35:38,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:38,962 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 [2022-11-25 15:35:38,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:38,963 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:35:38,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:39,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:35:39,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:39,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:35:39,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:35:39,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:39,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462796332] [2022-11-25 15:35:39,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462796332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:35:39,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:35:39,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:35:39,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825858349] [2022-11-25 15:35:39,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:35:39,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:35:39,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:35:39,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:35:39,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:35:39,106 INFO L87 Difference]: Start difference. First operand 148 states and 203 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-25 15:35:39,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:39,173 INFO L93 Difference]: Finished difference Result 130 states and 170 transitions. [2022-11-25 15:35:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:35:39,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 17 [2022-11-25 15:35:39,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:39,175 INFO L225 Difference]: With dead ends: 130 [2022-11-25 15:35:39,175 INFO L226 Difference]: Without dead ends: 128 [2022-11-25 15:35:39,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:35:39,176 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:39,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 374 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:35:39,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-25 15:35:39,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2022-11-25 15:35:39,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 88 states have (on average 1.6590909090909092) internal successors, (146), 114 states have internal predecessors, (146), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-25 15:35:39,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 168 transitions. [2022-11-25 15:35:39,194 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 168 transitions. Word has length 17 [2022-11-25 15:35:39,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:39,195 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 168 transitions. [2022-11-25 15:35:39,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-25 15:35:39,198 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 168 transitions. [2022-11-25 15:35:39,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-25 15:35:39,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:39,199 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:39,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:35:39,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:39,413 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:35:39,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:39,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1138254343, now seen corresponding path program 1 times [2022-11-25 15:35:39,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:39,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706754490] [2022-11-25 15:35:39,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:39,418 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 [2022-11-25 15:35:39,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:39,419 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:35:39,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:39,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:35:39,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:35:39,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:39,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:35:39,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:39,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706754490] [2022-11-25 15:35:39,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706754490] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:35:39,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:35:39,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2022-11-25 15:35:39,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629846999] [2022-11-25 15:35:39,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:35:39,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 15:35:39,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:35:39,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 15:35:39,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:35:39,957 INFO L87 Difference]: Start difference. First operand 128 states and 168 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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) [2022-11-25 15:35:40,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:40,399 INFO L93 Difference]: Finished difference Result 131 states and 170 transitions. [2022-11-25 15:35:40,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:35:40,400 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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 18 [2022-11-25 15:35:40,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:40,401 INFO L225 Difference]: With dead ends: 131 [2022-11-25 15:35:40,401 INFO L226 Difference]: Without dead ends: 129 [2022-11-25 15:35:40,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:35:40,403 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 201 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:40,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 337 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 15:35:40,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-25 15:35:40,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-11-25 15:35:40,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 90 states have (on average 1.6222222222222222) internal successors, (146), 114 states have internal predecessors, (146), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-25 15:35:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 168 transitions. [2022-11-25 15:35:40,423 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 168 transitions. Word has length 18 [2022-11-25 15:35:40,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:40,423 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 168 transitions. [2022-11-25 15:35:40,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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) [2022-11-25 15:35:40,424 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 168 transitions. [2022-11-25 15:35:40,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-25 15:35:40,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:40,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:40,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:35:40,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:40,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:35:40,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:40,656 INFO L85 PathProgramCache]: Analyzing trace with hash 968466533, now seen corresponding path program 1 times [2022-11-25 15:35:40,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:40,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976087918] [2022-11-25 15:35:40,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:40,657 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 [2022-11-25 15:35:40,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:40,658 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:35:40,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:40,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 15:35:40,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:40,944 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_entry_point_~c11~0#1.base| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~c11~0#1.base|) (_ bv0 1)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~c11~0#1.base| (_ bv0 1))))) is different from true [2022-11-25 15:35:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:35:40,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:41,124 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret43#1.base_18| (_ BitVec 32))) (or (= (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret43#1.base_18| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret43#1.base_18|))))) is different from false [2022-11-25 15:35:41,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:41,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976087918] [2022-11-25 15:35:41,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976087918] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:35:41,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [782267456] [2022-11-25 15:35:41,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:41,127 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:35:41,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:35:41,132 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:35:41,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-25 15:35:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:41,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 15:35:41,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:41,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:35:41,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:41,736 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret43#1.base_21| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret43#1.base_21|))) (= (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret43#1.base_21| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|))) is different from false [2022-11-25 15:35:41,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [782267456] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:35:41,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:35:41,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-11-25 15:35:41,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103011563] [2022-11-25 15:35:41,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:35:41,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 15:35:41,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:35:41,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 15:35:41,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=126, Unknown=3, NotChecked=72, Total=240 [2022-11-25 15:35:41,752 INFO L87 Difference]: Start difference. First operand 129 states and 168 transitions. Second operand has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 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) [2022-11-25 15:35:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:43,149 INFO L93 Difference]: Finished difference Result 189 states and 236 transitions. [2022-11-25 15:35:43,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:35:43,150 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 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 21 [2022-11-25 15:35:43,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:43,152 INFO L225 Difference]: With dead ends: 189 [2022-11-25 15:35:43,152 INFO L226 Difference]: Without dead ends: 184 [2022-11-25 15:35:43,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 3 IntricatePredicates, 2 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=276, Unknown=3, NotChecked=108, Total=462 [2022-11-25 15:35:43,154 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 143 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:43,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 514 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 471 Invalid, 0 Unknown, 167 Unchecked, 1.2s Time] [2022-11-25 15:35:43,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-25 15:35:43,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 124. [2022-11-25 15:35:43,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 85 states have (on average 1.6470588235294117) internal successors, (140), 110 states have internal predecessors, (140), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-25 15:35:43,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 162 transitions. [2022-11-25 15:35:43,163 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 162 transitions. Word has length 21 [2022-11-25 15:35:43,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:43,164 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 162 transitions. [2022-11-25 15:35:43,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 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) [2022-11-25 15:35:43,164 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 162 transitions. [2022-11-25 15:35:43,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-25 15:35:43,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:43,166 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:43,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:35:43,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-25 15:35:43,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 15:35:43,584 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:35:43,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:43,584 INFO L85 PathProgramCache]: Analyzing trace with hash -406257806, now seen corresponding path program 1 times [2022-11-25 15:35:43,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:43,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750117626] [2022-11-25 15:35:43,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:43,585 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 [2022-11-25 15:35:43,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:43,586 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:35:43,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:43,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 15:35:43,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:43,700 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 [2022-11-25 15:35:43,793 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 [2022-11-25 15:35:43,822 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 15:35:43,823 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 [2022-11-25 15:35:43,848 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2022-11-25 15:35:43,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:44,090 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:35:44,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:44,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750117626] [2022-11-25 15:35:44,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750117626] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:35:44,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:35:44,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2022-11-25 15:35:44,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804128292] [2022-11-25 15:35:44,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:35:44,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:35:44,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:35:44,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:35:44,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2022-11-25 15:35:44,093 INFO L87 Difference]: Start difference. First operand 124 states and 162 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2022-11-25 15:35:44,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:44,658 INFO L93 Difference]: Finished difference Result 174 states and 227 transitions. [2022-11-25 15:35:44,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:35:44,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 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 [2022-11-25 15:35:44,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:44,660 INFO L225 Difference]: With dead ends: 174 [2022-11-25 15:35:44,660 INFO L226 Difference]: Without dead ends: 174 [2022-11-25 15:35:44,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72 [2022-11-25 15:35:44,661 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 55 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:44,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 327 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 268 Invalid, 0 Unknown, 110 Unchecked, 0.5s Time] [2022-11-25 15:35:44,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-25 15:35:44,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 137. [2022-11-25 15:35:44,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 97 states have (on average 1.6288659793814433) internal successors, (158), 120 states have internal predecessors, (158), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (15), 13 states have call predecessors, (15), 10 states have call successors, (15) [2022-11-25 15:35:44,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 183 transitions. [2022-11-25 15:35:44,676 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 183 transitions. Word has length 25 [2022-11-25 15:35:44,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:44,677 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 183 transitions. [2022-11-25 15:35:44,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 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) [2022-11-25 15:35:44,678 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 183 transitions. [2022-11-25 15:35:44,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-25 15:35:44,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:44,680 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:35:44,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:35:44,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:44,897 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:35:44,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:44,897 INFO L85 PathProgramCache]: Analyzing trace with hash -406257805, now seen corresponding path program 1 times [2022-11-25 15:35:44,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:44,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100329015] [2022-11-25 15:35:44,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:44,898 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 [2022-11-25 15:35:44,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:44,899 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:35:44,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:45,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 15:35:45,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:45,029 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 [2022-11-25 15:35:45,176 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 [2022-11-25 15:35:45,205 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 15:35:45,205 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 [2022-11-25 15:35:45,248 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-11-25 15:35:45,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:45,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:45,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100329015] [2022-11-25 15:35:45,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100329015] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:35:45,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [39406372] [2022-11-25 15:35:45,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:45,583 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:35:45,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:35:45,588 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:35:45,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-25 15:35:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:45,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 15:35:45,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:45,812 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 [2022-11-25 15:35:45,820 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 [2022-11-25 15:35:46,054 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_102 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_102) |c_#length|)))) is different from true [2022-11-25 15:35:46,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:35:46,085 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 [2022-11-25 15:35:46,103 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:35:46,104 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 [2022-11-25 15:35:46,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-11-25 15:35:46,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:50,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [39406372] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:35:50,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:35:50,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-25 15:35:50,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077514408] [2022-11-25 15:35:50,440 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:35:50,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 15:35:50,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:35:50,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 15:35:50,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=171, Unknown=4, NotChecked=54, Total=272 [2022-11-25 15:35:50,442 INFO L87 Difference]: Start difference. First operand 137 states and 183 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 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) [2022-11-25 15:35:52,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:52,351 INFO L93 Difference]: Finished difference Result 266 states and 343 transitions. [2022-11-25 15:35:52,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 15:35:52,352 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 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 [2022-11-25 15:35:52,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:52,354 INFO L225 Difference]: With dead ends: 266 [2022-11-25 15:35:52,354 INFO L226 Difference]: Without dead ends: 266 [2022-11-25 15:35:52,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=54, Invalid=222, Unknown=4, NotChecked=62, Total=342 [2022-11-25 15:35:52,356 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 146 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 346 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:52,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1008 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 776 Invalid, 0 Unknown, 346 Unchecked, 1.7s Time] [2022-11-25 15:35:52,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-25 15:35:52,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 195. [2022-11-25 15:35:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 149 states have (on average 1.6442953020134228) internal successors, (245), 172 states have internal predecessors, (245), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (23), 19 states have call predecessors, (23), 16 states have call successors, (23) [2022-11-25 15:35:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 284 transitions. [2022-11-25 15:35:52,366 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 284 transitions. Word has length 25 [2022-11-25 15:35:52,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:52,366 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 284 transitions. [2022-11-25 15:35:52,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 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) [2022-11-25 15:35:52,367 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 284 transitions. [2022-11-25 15:35:52,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-25 15:35:52,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:52,368 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] [2022-11-25 15:35:52,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:35:52,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-25 15:35:52,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 15:35:52,780 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:35:52,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:52,780 INFO L85 PathProgramCache]: Analyzing trace with hash -911816431, now seen corresponding path program 1 times [2022-11-25 15:35:52,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:52,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142301608] [2022-11-25 15:35:52,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:52,781 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 [2022-11-25 15:35:52,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:52,782 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:35:52,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:52,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:35:52,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:35:52,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:35:52,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:52,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142301608] [2022-11-25 15:35:52,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142301608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:35:52,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:35:52,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:35:52,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107679878] [2022-11-25 15:35:52,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:35:52,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:35:52,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:35:52,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:35:52,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:35:52,948 INFO L87 Difference]: Start difference. First operand 195 states and 284 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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) [2022-11-25 15:35:53,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:53,001 INFO L93 Difference]: Finished difference Result 126 states and 161 transitions. [2022-11-25 15:35:53,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:35:53,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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 [2022-11-25 15:35:53,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:53,004 INFO L225 Difference]: With dead ends: 126 [2022-11-25 15:35:53,004 INFO L226 Difference]: Without dead ends: 124 [2022-11-25 15:35:53,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:35:53,005 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:53,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 348 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:35:53,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-25 15:35:53,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-11-25 15:35:53,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 88 states have (on average 1.5681818181818181) internal successors, (138), 110 states have internal predecessors, (138), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-25 15:35:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 159 transitions. [2022-11-25 15:35:53,011 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 159 transitions. Word has length 25 [2022-11-25 15:35:53,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:53,016 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 159 transitions. [2022-11-25 15:35:53,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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) [2022-11-25 15:35:53,017 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 159 transitions. [2022-11-25 15:35:53,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-25 15:35:53,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:53,024 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] [2022-11-25 15:35:53,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:35:53,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:53,224 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:35:53,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:53,225 INFO L85 PathProgramCache]: Analyzing trace with hash 290909999, now seen corresponding path program 1 times [2022-11-25 15:35:53,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:53,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99300458] [2022-11-25 15:35:53,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:53,225 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 [2022-11-25 15:35:53,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:53,227 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:35:53,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:53,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:35:53,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:35:53,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:35:53,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:53,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99300458] [2022-11-25 15:35:53,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99300458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:35:53,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:35:53,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:35:53,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060135420] [2022-11-25 15:35:53,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:35:53,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:35:53,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:35:53,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:35:53,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:35:53,380 INFO L87 Difference]: Start difference. First operand 124 states and 159 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 15:35:53,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:53,457 INFO L93 Difference]: Finished difference Result 174 states and 208 transitions. [2022-11-25 15:35:53,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:35:53,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2022-11-25 15:35:53,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:53,459 INFO L225 Difference]: With dead ends: 174 [2022-11-25 15:35:53,459 INFO L226 Difference]: Without dead ends: 174 [2022-11-25 15:35:53,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:35:53,460 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 57 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:53,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 428 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:35:53,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-25 15:35:53,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 124. [2022-11-25 15:35:53,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 88 states have (on average 1.5568181818181819) internal successors, (137), 110 states have internal predecessors, (137), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-25 15:35:53,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 158 transitions. [2022-11-25 15:35:53,478 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 158 transitions. Word has length 26 [2022-11-25 15:35:53,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:53,479 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 158 transitions. [2022-11-25 15:35:53,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 15:35:53,479 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 158 transitions. [2022-11-25 15:35:53,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-25 15:35:53,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:53,484 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] [2022-11-25 15:35:53,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:53,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:53,698 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:35:53,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:53,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1178413680, now seen corresponding path program 1 times [2022-11-25 15:35:53,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:53,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993026967] [2022-11-25 15:35:53,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:53,701 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 [2022-11-25 15:35:53,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:53,702 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:35:53,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 (17)] Waiting until timeout for monitored process [2022-11-25 15:35:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:53,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:35:53,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 15:35:54,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:35:54,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:54,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993026967] [2022-11-25 15:35:54,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993026967] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:35:54,395 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:35:54,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2022-11-25 15:35:54,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815524681] [2022-11-25 15:35:54,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:35:54,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 15:35:54,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:35:54,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 15:35:54,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:35:54,397 INFO L87 Difference]: Start difference. First operand 124 states and 158 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 15:35:54,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:54,939 INFO L93 Difference]: Finished difference Result 123 states and 155 transitions. [2022-11-25 15:35:54,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:35:54,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 26 [2022-11-25 15:35:54,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:54,941 INFO L225 Difference]: With dead ends: 123 [2022-11-25 15:35:54,941 INFO L226 Difference]: Without dead ends: 123 [2022-11-25 15:35:54,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:35:54,942 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 180 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:54,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 322 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 15:35:54,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-25 15:35:54,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2022-11-25 15:35:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 88 states have (on average 1.5227272727272727) internal successors, (134), 109 states have internal predecessors, (134), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-25 15:35:54,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 155 transitions. [2022-11-25 15:35:54,948 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 155 transitions. Word has length 26 [2022-11-25 15:35:54,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:54,949 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 155 transitions. [2022-11-25 15:35:54,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 15:35:54,949 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 155 transitions. [2022-11-25 15:35:54,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-25 15:35:54,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:54,951 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] [2022-11-25 15:35:54,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 (17)] Forceful destruction successful, exit code 0 [2022-11-25 15:35:55,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:55,151 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:35:55,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:55,152 INFO L85 PathProgramCache]: Analyzing trace with hash 428272563, now seen corresponding path program 1 times [2022-11-25 15:35:55,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:55,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870943396] [2022-11-25 15:35:55,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:55,153 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 [2022-11-25 15:35:55,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:55,154 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:35:55,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:55,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 15:35:55,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:55,323 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 [2022-11-25 15:35:55,349 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 15:35:55,350 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 [2022-11-25 15:35:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 15:35:55,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:35:55,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:55,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870943396] [2022-11-25 15:35:55,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870943396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:35:55,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:35:55,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:35:55,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581611863] [2022-11-25 15:35:55,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:35:55,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:35:55,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:35:55,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:35:55,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2022-11-25 15:35:55,394 INFO L87 Difference]: Start difference. First operand 123 states and 155 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 15:35:55,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:55,713 INFO L93 Difference]: Finished difference Result 157 states and 192 transitions. [2022-11-25 15:35:55,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:35:55,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-11-25 15:35:55,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:55,715 INFO L225 Difference]: With dead ends: 157 [2022-11-25 15:35:55,716 INFO L226 Difference]: Without dead ends: 157 [2022-11-25 15:35:55,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2022-11-25 15:35:55,717 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 90 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:55,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 234 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 142 Invalid, 0 Unknown, 139 Unchecked, 0.3s Time] [2022-11-25 15:35:55,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-25 15:35:55,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 122. [2022-11-25 15:35:55,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 88 states have (on average 1.5) internal successors, (132), 108 states have internal predecessors, (132), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-25 15:35:55,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 153 transitions. [2022-11-25 15:35:55,722 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 153 transitions. Word has length 27 [2022-11-25 15:35:55,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:35:55,722 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 153 transitions. [2022-11-25 15:35:55,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 15:35:55,722 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 153 transitions. [2022-11-25 15:35:55,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-25 15:35:55,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:35:55,727 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] [2022-11-25 15:35:55,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:35:55,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:35:55,936 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:35:55,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:35:55,936 INFO L85 PathProgramCache]: Analyzing trace with hash 428272564, now seen corresponding path program 1 times [2022-11-25 15:35:55,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:35:55,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853178353] [2022-11-25 15:35:55,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:55,937 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 [2022-11-25 15:35:55,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:35:55,942 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:35:55,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Waiting until timeout for monitored process [2022-11-25 15:35:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:56,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-25 15:35:56,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:56,118 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 [2022-11-25 15:35:56,128 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 [2022-11-25 15:35:56,297 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_177 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_177) |c_#length|)))) is different from true [2022-11-25 15:35:56,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:35:56,324 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 [2022-11-25 15:35:56,340 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:35:56,341 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 [2022-11-25 15:35:56,437 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_178 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_178) |c_#length|)))) is different from true [2022-11-25 15:35:56,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:35:56,502 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 [2022-11-25 15:35:56,517 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:35:56,517 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 [2022-11-25 15:35:56,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 6 not checked. [2022-11-25 15:35:56,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:35:59,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:35:59,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853178353] [2022-11-25 15:35:59,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853178353] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:35:59,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1774654210] [2022-11-25 15:35:59,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:35:59,146 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:35:59,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:35:59,148 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:35:59,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-25 15:35:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:35:59,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-25 15:35:59,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:35:59,393 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 [2022-11-25 15:35:59,404 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 [2022-11-25 15:35:59,587 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:35:59,587 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 [2022-11-25 15:35:59,596 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 [2022-11-25 15:35:59,729 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_203 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_203))))) is different from true [2022-11-25 15:35:59,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:35:59,766 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 [2022-11-25 15:35:59,793 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:35:59,794 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 [2022-11-25 15:35:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2022-11-25 15:35:59,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:36:00,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1774654210] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:36:00,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:36:00,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 13 [2022-11-25 15:36:00,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691334281] [2022-11-25 15:36:00,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:36:00,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 15:36:00,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:36:00,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 15:36:00,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=152, Unknown=4, NotChecked=78, Total=272 [2022-11-25 15:36:00,151 INFO L87 Difference]: Start difference. First operand 122 states and 153 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:36:02,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:36:02,156 INFO L93 Difference]: Finished difference Result 224 states and 244 transitions. [2022-11-25 15:36:02,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 15:36:02,157 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 27 [2022-11-25 15:36:02,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:36:02,158 INFO L225 Difference]: With dead ends: 224 [2022-11-25 15:36:02,158 INFO L226 Difference]: Without dead ends: 224 [2022-11-25 15:36:02,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=62, Invalid=252, Unknown=4, NotChecked=102, Total=420 [2022-11-25 15:36:02,160 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 167 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 18 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 606 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:36:02,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1016 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 773 Invalid, 19 Unknown, 606 Unchecked, 1.7s Time] [2022-11-25 15:36:02,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-25 15:36:02,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 121. [2022-11-25 15:36:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 88 states have (on average 1.4772727272727273) internal successors, (130), 107 states have internal predecessors, (130), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-25 15:36:02,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 151 transitions. [2022-11-25 15:36:02,166 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 151 transitions. Word has length 27 [2022-11-25 15:36:02,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:36:02,167 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 151 transitions. [2022-11-25 15:36:02,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:36:02,167 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 151 transitions. [2022-11-25 15:36:02,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-25 15:36:02,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:36:02,168 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] [2022-11-25 15:36:02,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:02,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:02,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 15:36:02,583 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:36:02,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:02,583 INFO L85 PathProgramCache]: Analyzing trace with hash -746927052, now seen corresponding path program 1 times [2022-11-25 15:36:02,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:36:02,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123282170] [2022-11-25 15:36:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:02,584 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 [2022-11-25 15:36:02,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:36:02,585 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:36:02,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:36:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:02,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-25 15:36:02,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:02,828 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 [2022-11-25 15:36:02,876 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 [2022-11-25 15:36:03,097 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 15:36:03,097 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 [2022-11-25 15:36:03,289 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:36:03,289 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 [2022-11-25 15:36:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:36:03,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:36:03,704 INFO L321 Elim1Store]: treesize reduction 7, result has 68.2 percent of original size [2022-11-25 15:36:03,707 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 [2022-11-25 15:36:03,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:36:03,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123282170] [2022-11-25 15:36:03,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123282170] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:36:03,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [374205966] [2022-11-25 15:36:03,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:03,818 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:36:03,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:36:03,820 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:36:03,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-25 15:36:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:04,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-25 15:36:04,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:04,087 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 [2022-11-25 15:36:04,395 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:36:04,395 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 [2022-11-25 15:36:04,567 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 [2022-11-25 15:36:06,662 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_18| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_18| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_18|) (_ bv0 32))))) is different from true [2022-11-25 15:36:06,847 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 15:36:06,847 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 [2022-11-25 15:36:07,031 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 [2022-11-25 15:36:07,043 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-25 15:36:07,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:36:07,082 INFO L321 Elim1Store]: treesize reduction 7, result has 58.8 percent of original size [2022-11-25 15:36:07,082 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 [2022-11-25 15:36:07,091 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_252 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_252) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) is different from false [2022-11-25 15:36:07,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [374205966] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:36:07,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:36:07,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2022-11-25 15:36:07,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593320550] [2022-11-25 15:36:07,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:36:07,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-25 15:36:07,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:36:07,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-25 15:36:07,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=783, Unknown=2, NotChecked=114, Total=992 [2022-11-25 15:36:07,117 INFO L87 Difference]: Start difference. First operand 121 states and 151 transitions. Second operand has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 21 states have internal predecessors, (37), 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) [2022-11-25 15:36:22,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:36:22,221 INFO L93 Difference]: Finished difference Result 200 states and 235 transitions. [2022-11-25 15:36:22,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-25 15:36:22,222 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 21 states have internal predecessors, (37), 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 29 [2022-11-25 15:36:22,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:36:22,223 INFO L225 Difference]: With dead ends: 200 [2022-11-25 15:36:22,223 INFO L226 Difference]: Without dead ends: 200 [2022-11-25 15:36:22,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=360, Invalid=2093, Unknown=5, NotChecked=194, Total=2652 [2022-11-25 15:36:22,226 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 379 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 15:36:22,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 1695 Invalid, 1773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1519 Invalid, 0 Unknown, 185 Unchecked, 2.8s Time] [2022-11-25 15:36:22,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-25 15:36:22,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 93. [2022-11-25 15:36:22,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 64 states have (on average 1.359375) internal successors, (87), 81 states have internal predecessors, (87), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-25 15:36:22,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2022-11-25 15:36:22,232 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 29 [2022-11-25 15:36:22,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:36:22,233 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2022-11-25 15:36:22,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 21 states have internal predecessors, (37), 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) [2022-11-25 15:36:22,233 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2022-11-25 15:36:22,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-25 15:36:22,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:36:22,234 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] [2022-11-25 15:36:22,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:22,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:22,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 15:36:22,648 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:36:22,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:22,649 INFO L85 PathProgramCache]: Analyzing trace with hash -746927051, now seen corresponding path program 1 times [2022-11-25 15:36:22,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:36:22,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088609873] [2022-11-25 15:36:22,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:22,650 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 [2022-11-25 15:36:22,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:36:22,651 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:36:22,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:36:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-25 15:36:22,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:22,819 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 [2022-11-25 15:36:22,935 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:36:22,935 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 [2022-11-25 15:36:23,021 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 [2022-11-25 15:36:23,035 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 [2022-11-25 15:36:23,320 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 15:36:23,321 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 38 treesize of output 37 [2022-11-25 15:36:23,333 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 18 treesize of output 20 [2022-11-25 15:36:23,483 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 25 treesize of output 13 [2022-11-25 15:36:23,491 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 [2022-11-25 15:36:23,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:23,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:36:24,158 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:36:24,159 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 [2022-11-25 15:36:24,255 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_277 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_277) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset|))) (forall ((v_prenex_6 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_prenex_6) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (or (forall ((v_ArrVal_276 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_276) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (forall ((v_ArrVal_277 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_277) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)) (_ bv0 32))))) is different from false [2022-11-25 15:36:24,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:36:24,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088609873] [2022-11-25 15:36:24,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088609873] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:36:24,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [406498546] [2022-11-25 15:36:24,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:24,363 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:36:24,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:36:24,364 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:36:24,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-11-25 15:36:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:24,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-25 15:36:24,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:24,658 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 [2022-11-25 15:36:24,956 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 [2022-11-25 15:36:27,149 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 15:36:27,150 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 [2022-11-25 15:36:27,442 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 [2022-11-25 15:36:27,465 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 [2022-11-25 15:36:27,623 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 [2022-11-25 15:36:27,635 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 [2022-11-25 15:36:27,810 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_22| (_ BitVec 32))) (and (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_22|) (_ bv0 32)) (_ bv0 32)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_22|) (_ bv0 32)) |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_22|)))) (exists ((v_ArrVal_303 (_ BitVec 32)) (|ldv_malloc_#res.base| (_ 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_303))))) is different from true [2022-11-25 15:36:27,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:36:27,867 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 12 treesize of output 14 [2022-11-25 15:36:27,905 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-25 15:36:27,905 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 20 treesize of output 22 [2022-11-25 15:36:28,161 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 15:36:28,162 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 38 treesize of output 37 [2022-11-25 15:36:28,170 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 18 treesize of output 20 [2022-11-25 15:36:28,411 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 25 treesize of output 13 [2022-11-25 15:36:28,423 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 [2022-11-25 15:36:28,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-25 15:36:28,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:36:28,705 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_305 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_304) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_305) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)))) (forall ((v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_304) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) is different from false [2022-11-25 15:36:28,921 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((|v_ldv_malloc_#res.base_89| (_ BitVec 32))) (or (not (= (select |c_#valid| |v_ldv_malloc_#res.base_89|) (_ bv0 1))) (forall ((v_ArrVal_308 (_ BitVec 32)) (v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_305 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_304) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)) (select (store |c_#length| |v_ldv_malloc_#res.base_89| v_ArrVal_308) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_305) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)))))) (or (forall ((v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_304) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((|v_ldv_malloc_#res.base_89| (_ BitVec 32))) (not (= (select |c_#valid| |v_ldv_malloc_#res.base_89|) (_ bv0 1)))))) is different from false [2022-11-25 15:36:28,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [406498546] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:36:28,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:36:28,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 29 [2022-11-25 15:36:28,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890700429] [2022-11-25 15:36:28,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:36:28,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-25 15:36:28,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:36:28,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-25 15:36:28,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=952, Unknown=5, NotChecked=260, Total=1332 [2022-11-25 15:36:28,934 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand has 30 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 26 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 15:36:31,007 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] [2022-11-25 15:36:33,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:36:35,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:36:42,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:36:45,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:36:47,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:36:49,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:36:51,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:36:53,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:36:56,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:36:58,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:37:00,433 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] [2022-11-25 15:37:00,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:37:00,663 INFO L93 Difference]: Finished difference Result 193 states and 204 transitions. [2022-11-25 15:37:00,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 15:37:00,664 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 26 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2022-11-25 15:37:00,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:37:00,665 INFO L225 Difference]: With dead ends: 193 [2022-11-25 15:37:00,665 INFO L226 Difference]: Without dead ends: 191 [2022-11-25 15:37:00,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=247, Invalid=1569, Unknown=6, NotChecked=340, Total=2162 [2022-11-25 15:37:00,667 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 316 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 32 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:37:00,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 939 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1160 Invalid, 12 Unknown, 166 Unchecked, 26.5s Time] [2022-11-25 15:37:00,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-25 15:37:00,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 94. [2022-11-25 15:37:00,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 82 states have internal predecessors, (87), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-25 15:37:00,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2022-11-25 15:37:00,677 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 29 [2022-11-25 15:37:00,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:37:00,678 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2022-11-25 15:37:00,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 26 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-25 15:37:00,679 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2022-11-25 15:37:00,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-25 15:37:00,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:37:00,679 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] [2022-11-25 15:37:00,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:37:00,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2022-11-25 15:37:01,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 15:37:01,092 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:37:01,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:37:01,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1269350632, now seen corresponding path program 1 times [2022-11-25 15:37:01,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:37:01,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891133888] [2022-11-25 15:37:01,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:01,093 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 [2022-11-25 15:37:01,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:37:01,094 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:37:01,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:37:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:01,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 15:37:01,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:37:05,509 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_entry_point_~c11~0#1.base| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~c11~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_321 (_ BitVec 1)) (|ULTIMATE.start_entry_point_~cfg~1#1.base| (_ BitVec 32))) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~c11~0#1.base| v_ArrVal_321))) (and (= |c_#valid| (store (store .cse0 |ULTIMATE.start_entry_point_~cfg~1#1.base| (_ bv0 1)) |ULTIMATE.start_entry_point_~c11~0#1.base| (_ bv0 1))) (= (select .cse0 |ULTIMATE.start_entry_point_~cfg~1#1.base|) (_ bv0 1))))))) is different from true [2022-11-25 15:37:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:37:05,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:37:07,849 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret44#1.base_35| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret44#1.base_35|))) (= |c_ULTIMATE.start_main_old_#valid#1| (store (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret44#1.base_35| (_ bv0 1)) |c_ULTIMATE.start_entry_point_~c11~0#1.base| (_ bv0 1))))) is different from false [2022-11-25 15:37:07,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:37:07,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891133888] [2022-11-25 15:37:07,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891133888] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:37:07,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [873848392] [2022-11-25 15:37:07,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:07,853 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:37:07,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:37:07,854 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:37:07,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-25 15:37:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:08,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 15:37:08,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:37:15,123 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_321 (_ BitVec 1)) (|ULTIMATE.start_entry_point_~cfg~1#1.base| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~c11~0#1.base| (_ BitVec 32))) (let ((.cse1 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~c11~0#1.base| v_ArrVal_321))) (let ((.cse0 (store .cse1 |ULTIMATE.start_entry_point_~cfg~1#1.base| (_ bv0 1)))) (and (= |c_#valid| (store .cse0 |ULTIMATE.start_entry_point_~c11~0#1.base| (_ bv0 1))) (not (= |ULTIMATE.start_entry_point_~c11~0#1.base| (_ bv0 32))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~c11~0#1.base|) (_ bv0 1)) (= (select .cse1 |ULTIMATE.start_entry_point_~cfg~1#1.base|) (_ bv0 1)) (= (_ bv0 1) (bvadd (select .cse0 |ULTIMATE.start_entry_point_~c11~0#1.base|) (_ bv1 1))))))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32)))) is different from true [2022-11-25 15:37:15,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:37:15,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:37:15,552 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 15 treesize of output 13 [2022-11-25 15:37:22,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [873848392] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:37:22,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:37:22,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2022-11-25 15:37:22,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495296390] [2022-11-25 15:37:22,181 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:37:22,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-25 15:37:22,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:37:22,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-25 15:37:22,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=634, Unknown=12, NotChecked=162, Total=930 [2022-11-25 15:37:22,183 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand has 21 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 15:37:29,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:37:29,181 INFO L93 Difference]: Finished difference Result 138 states and 150 transitions. [2022-11-25 15:37:29,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 15:37:29,182 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 32 [2022-11-25 15:37:29,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:37:29,183 INFO L225 Difference]: With dead ends: 138 [2022-11-25 15:37:29,184 INFO L226 Difference]: Without dead ends: 130 [2022-11-25 15:37:29,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 67 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 3 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=248, Invalid=1234, Unknown=12, NotChecked=228, Total=1722 [2022-11-25 15:37:29,185 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 124 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 35 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 282 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:37:29,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 590 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 646 Invalid, 3 Unknown, 282 Unchecked, 2.0s Time] [2022-11-25 15:37:29,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-25 15:37:29,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 86. [2022-11-25 15:37:29,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 57 states have (on average 1.368421052631579) internal successors, (78), 75 states have internal predecessors, (78), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-25 15:37:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2022-11-25 15:37:29,190 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 32 [2022-11-25 15:37:29,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:37:29,191 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2022-11-25 15:37:29,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 15:37:29,192 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2022-11-25 15:37:29,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-25 15:37:29,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:37:29,193 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] [2022-11-25 15:37:29,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-11-25 15:37:29,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:37:29,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:37:29,596 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:37:29,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:37:29,596 INFO L85 PathProgramCache]: Analyzing trace with hash 411440938, now seen corresponding path program 1 times [2022-11-25 15:37:29,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:37:29,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317195815] [2022-11-25 15:37:29,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:29,597 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 [2022-11-25 15:37:29,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:37:29,599 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:37:29,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:37:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:29,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-25 15:37:29,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:37:29,785 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 [2022-11-25 15:37:29,875 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:37:29,876 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 [2022-11-25 15:37:29,943 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 [2022-11-25 15:37:29,955 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 [2022-11-25 15:37:32,028 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.offset_BEFORE_CALL_17| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_30| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_30| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_30|) |v_ULTIMATE.start_entry_point_~c11~0#1.offset_BEFORE_CALL_17|)))) is different from true [2022-11-25 15:37:32,044 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 [2022-11-25 15:37:36,370 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-25 15:37:36,371 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 [2022-11-25 15:37:36,377 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 [2022-11-25 15:37:36,546 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 [2022-11-25 15:37:36,753 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-25 15:37:36,754 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 [2022-11-25 15:37:36,892 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_378 (_ BitVec 1))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_378) |c_#valid|)))) is different from true [2022-11-25 15:37:36,943 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 15:37:36,944 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 [2022-11-25 15:37:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2022-11-25 15:37:36,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:37:38,483 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_375 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base|) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset| |c_ULTIMATE.start_entry_point_#t~ret45#1.base|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_375) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)))) (_ bv0 1))) is different from false [2022-11-25 15:37:38,516 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 [2022-11-25 15:37:38,533 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret45#1.base_34| (_ BitVec 32)) (v_ArrVal_375 (Array (_ BitVec 32) (_ BitVec 32)))) (= |v_ULTIMATE.start_entry_point_#t~ret45#1.base_34| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base|) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset| |v_ULTIMATE.start_entry_point_#t~ret45#1.base_34|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_375) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)))) is different from false [2022-11-25 15:37:38,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:37:38,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317195815] [2022-11-25 15:37:38,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317195815] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:37:38,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [188781963] [2022-11-25 15:37:38,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:38,538 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:37:38,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:37:38,539 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:37:38,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-25 15:37:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:38,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-25 15:37:38,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:37:38,838 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 [2022-11-25 15:37:41,264 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:37:41,265 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 [2022-11-25 15:37:41,532 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 [2022-11-25 15:37:41,549 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 [2022-11-25 15:37:41,896 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 [2022-11-25 15:37:42,656 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 15:37:42,657 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 [2022-11-25 15:37:42,665 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 37 treesize of output 37 [2022-11-25 15:37:42,992 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 34 treesize of output 22 [2022-11-25 15:37:43,375 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 15:37:43,376 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 [2022-11-25 15:37:43,404 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_412 (_ BitVec 1))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_412) |c_#valid|)))) is different from true [2022-11-25 15:37:43,457 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 15:37:43,458 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 [2022-11-25 15:37:43,471 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 6 not checked. [2022-11-25 15:37:43,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:37:43,924 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_409 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base|) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset| |c_ULTIMATE.start_entry_point_~fe~1#1.base|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_409) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)))))) is different from false [2022-11-25 15:37:46,434 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 [2022-11-25 15:37:46,452 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret45#1.base_37| (_ BitVec 32)) (v_ArrVal_409 (Array (_ BitVec 32) (_ BitVec 32)))) (= |v_ULTIMATE.start_entry_point_#t~ret45#1.base_37| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~cfg~1#1.base|) |c_ULTIMATE.start_entry_point_~cfg~1#1.offset| |v_ULTIMATE.start_entry_point_#t~ret45#1.base_37|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~cfg~1#1.base| v_ArrVal_409) |c_ULTIMATE.start_entry_point_~c11~0#1.base|) |c_ULTIMATE.start_entry_point_~c11~0#1.offset|)))) is different from false [2022-11-25 15:37:46,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [188781963] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:37:46,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:37:46,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 36 [2022-11-25 15:37:46,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195729892] [2022-11-25 15:37:46,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:37:46,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-25 15:37:46,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:37:46,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-25 15:37:46,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1500, Unknown=25, NotChecked=588, Total=2256 [2022-11-25 15:37:46,460 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 37 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 31 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-25 15:37:48,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:37:50,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:37:58,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:00,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:13,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:16,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:18,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:20,303 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] [2022-11-25 15:38:20,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:38:20,627 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2022-11-25 15:38:20,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 15:38:20,630 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 31 states have internal predecessors, (50), 6 states have call successors, (6), 4 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 38 [2022-11-25 15:38:20,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:38:20,631 INFO L225 Difference]: With dead ends: 147 [2022-11-25 15:38:20,632 INFO L226 Difference]: Without dead ends: 147 [2022-11-25 15:38:20,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 61 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=373, Invalid=2706, Unknown=29, NotChecked=798, Total=3906 [2022-11-25 15:38:20,634 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 382 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 73 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 442 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:38:20,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 993 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1296 Invalid, 8 Unknown, 442 Unchecked, 19.7s Time] [2022-11-25 15:38:20,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-25 15:38:20,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 98. [2022-11-25 15:38:20,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 68 states have (on average 1.338235294117647) internal successors, (91), 85 states have internal predecessors, (91), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-25 15:38:20,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2022-11-25 15:38:20,641 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 38 [2022-11-25 15:38:20,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:38:20,641 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2022-11-25 15:38:20,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 31 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-25 15:38:20,645 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2022-11-25 15:38:20,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-25 15:38:20,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:38:20,646 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] [2022-11-25 15:38:20,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:38:20,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-25 15:38:21,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 15:38:21,052 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:38:21,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:38:21,052 INFO L85 PathProgramCache]: Analyzing trace with hash 411440939, now seen corresponding path program 1 times [2022-11-25 15:38:21,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:38:21,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286709979] [2022-11-25 15:38:21,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:38:21,053 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 [2022-11-25 15:38:21,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:38:21,054 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:38:21,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 (29)] Waiting until timeout for monitored process [2022-11-25 15:38:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:21,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-25 15:38:21,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:38:21,230 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 [2022-11-25 15:38:21,319 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:38:21,319 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 [2022-11-25 15:38:21,386 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 [2022-11-25 15:38:21,397 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 [2022-11-25 15:38:23,475 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.offset_BEFORE_CALL_20| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_34| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_34|) |v_ULTIMATE.start_entry_point_~c11~0#1.offset_BEFORE_CALL_20|) |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_34|))) is different from true [2022-11-25 15:38:25,541 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 [2022-11-25 15:38:25,555 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 [2022-11-25 15:38:28,029 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-25 15:38:28,030 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 [2022-11-25 15:38:28,037 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 [2022-11-25 15:38:28,503 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-25 15:38:28,503 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 [2022-11-25 15:38:28,518 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 [2022-11-25 15:38:28,800 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_448 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_448))))) is different from true [2022-11-25 15:38:28,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:38:28,835 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 [2022-11-25 15:38:28,856 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:38:28,856 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 13 treesize of output 13 [2022-11-25 15:38:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-11-25 15:38:28,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:38:33,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:38:33,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286709979] [2022-11-25 15:38:33,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286709979] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:38:33,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [181002587] [2022-11-25 15:38:33,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:38:33,561 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:38:33,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:38:33,562 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:38:33,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-25 15:38:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:33,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-25 15:38:33,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:38:33,905 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 [2022-11-25 15:38:34,343 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:38:34,344 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 [2022-11-25 15:38:34,584 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 [2022-11-25 15:38:34,605 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 [2022-11-25 15:38:35,145 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 [2022-11-25 15:38:35,161 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 [2022-11-25 15:38:35,985 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 15:38:35,985 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 [2022-11-25 15:38:35,993 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 [2022-11-25 15:38:36,932 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 15:38:36,932 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 [2022-11-25 15:38:36,947 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 30 treesize of output 13 [2022-11-25 15:38:37,000 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_483 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_483) |c_#length|)))) is different from true [2022-11-25 15:38:37,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:38:37,022 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 [2022-11-25 15:38:37,037 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:38:37,038 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 [2022-11-25 15:38:37,067 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-25 15:38:37,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:38:42,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [181002587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:38:42,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:38:42,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 40 [2022-11-25 15:38:42,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009355198] [2022-11-25 15:38:42,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:38:42,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-25 15:38:42,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:38:42,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-25 15:38:42,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1436, Unknown=5, NotChecked=234, Total=1806 [2022-11-25 15:38:42,578 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand has 41 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 33 states have internal predecessors, (51), 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) [2022-11-25 15:38:44,651 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] [2022-11-25 15:38:46,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:49,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:55,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:59,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:39:02,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:39:04,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:39:06,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:39:09,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:39:10,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:10,450 INFO L93 Difference]: Finished difference Result 204 states and 222 transitions. [2022-11-25 15:39:10,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-25 15:39:10,451 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 33 states have internal predecessors, (51), 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 38 [2022-11-25 15:39:10,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:10,452 INFO L225 Difference]: With dead ends: 204 [2022-11-25 15:39:10,452 INFO L226 Difference]: Without dead ends: 204 [2022-11-25 15:39:10,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=306, Invalid=2671, Unknown=5, NotChecked=324, Total=3306 [2022-11-25 15:39:10,453 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 313 mSDsluCounter, 2389 mSDsCounter, 0 mSdLazyCounter, 2431 mSolverCounterSat, 57 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 2844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2431 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 347 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:10,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 2522 Invalid, 2844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2431 Invalid, 9 Unknown, 347 Unchecked, 24.5s Time] [2022-11-25 15:39:10,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-25 15:39:10,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 98. [2022-11-25 15:39:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 68 states have (on average 1.3235294117647058) internal successors, (90), 85 states have internal predecessors, (90), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-25 15:39:10,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2022-11-25 15:39:10,460 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 38 [2022-11-25 15:39:10,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:10,461 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2022-11-25 15:39:10,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 33 states have internal predecessors, (51), 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) [2022-11-25 15:39:10,461 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2022-11-25 15:39:10,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-25 15:39:10,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:10,462 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] [2022-11-25 15:39:10,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:10,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 (29)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:10,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:10,866 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:10,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:10,867 INFO L85 PathProgramCache]: Analyzing trace with hash -433030933, now seen corresponding path program 1 times [2022-11-25 15:39:10,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:10,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499681518] [2022-11-25 15:39:10,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:10,868 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 [2022-11-25 15:39:10,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:10,869 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:10,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Waiting until timeout for monitored process [2022-11-25 15:39:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:11,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:39:11,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:39:11,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:39:11,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:11,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499681518] [2022-11-25 15:39:11,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499681518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:39:11,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:39:11,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:39:11,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934463199] [2022-11-25 15:39:11,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:39:11,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:39:11,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:11,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:39:11,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:39:11,073 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:39:11,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:11,116 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2022-11-25 15:39:11,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:39:11,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2022-11-25 15:39:11,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:11,118 INFO L225 Difference]: With dead ends: 86 [2022-11-25 15:39:11,118 INFO L226 Difference]: Without dead ends: 84 [2022-11-25 15:39:11,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:39:11,119 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:11,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 314 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:39:11,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-25 15:39:11,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2022-11-25 15:39:11,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 71 states have internal predecessors, (75), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 15:39:11,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2022-11-25 15:39:11,124 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 38 [2022-11-25 15:39:11,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:11,124 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2022-11-25 15:39:11,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:39:11,125 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2022-11-25 15:39:11,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-25 15:39:11,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:11,125 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] [2022-11-25 15:39:11,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:11,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:11,326 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_i2c_set_clientdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:11,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:11,327 INFO L85 PathProgramCache]: Analyzing trace with hash 257770205, now seen corresponding path program 1 times [2022-11-25 15:39:11,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:11,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638925584] [2022-11-25 15:39:11,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:11,328 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 [2022-11-25 15:39:11,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:11,329 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:11,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:11,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:39:11,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:11,537 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 15:39:11,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:39:11,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:11,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638925584] [2022-11-25 15:39:11,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638925584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:39:11,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:39:11,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:39:11,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43405869] [2022-11-25 15:39:11,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:39:11,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:39:11,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:11,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:39:11,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:39:11,539 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 15:39:11,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:11,625 INFO L93 Difference]: Finished difference Result 125 states and 132 transitions. [2022-11-25 15:39:11,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:39:11,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2022-11-25 15:39:11,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:11,628 INFO L225 Difference]: With dead ends: 125 [2022-11-25 15:39:11,628 INFO L226 Difference]: Without dead ends: 125 [2022-11-25 15:39:11,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:39:11,632 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 40 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:11,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 283 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:39:11,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-25 15:39:11,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 86. [2022-11-25 15:39:11,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 74 states have internal predecessors, (78), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-25 15:39:11,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2022-11-25 15:39:11,647 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 40 [2022-11-25 15:39:11,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:11,647 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2022-11-25 15:39:11,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 15:39:11,648 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2022-11-25 15:39:11,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-25 15:39:11,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:11,649 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] [2022-11-25 15:39:11,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:11,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:11,855 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_i2c_set_clientdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:11,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:11,856 INFO L85 PathProgramCache]: Analyzing trace with hash 2000580540, now seen corresponding path program 1 times [2022-11-25 15:39:11,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:11,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894381807] [2022-11-25 15:39:11,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:11,857 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 [2022-11-25 15:39:11,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:11,858 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:11,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Waiting until timeout for monitored process [2022-11-25 15:39:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:12,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 15:39:12,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:12,085 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 15:39:12,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:39:12,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:12,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894381807] [2022-11-25 15:39:12,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894381807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:39:12,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:39:12,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:39:12,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073145398] [2022-11-25 15:39:12,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:39:12,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:39:12,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:12,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:39:12,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:39:12,088 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:39:12,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:12,528 INFO L93 Difference]: Finished difference Result 121 states and 127 transitions. [2022-11-25 15:39:12,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:39:12,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2022-11-25 15:39:12,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:12,530 INFO L225 Difference]: With dead ends: 121 [2022-11-25 15:39:12,530 INFO L226 Difference]: Without dead ends: 121 [2022-11-25 15:39:12,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:39:12,531 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 42 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:12,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 346 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 15:39:12,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-25 15:39:12,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 93. [2022-11-25 15:39:12,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 64 states have (on average 1.3125) internal successors, (84), 80 states have internal predecessors, (84), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 15:39:12,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2022-11-25 15:39:12,536 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 40 [2022-11-25 15:39:12,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:12,537 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2022-11-25 15:39:12,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:39:12,537 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2022-11-25 15:39:12,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-25 15:39:12,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:12,538 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] [2022-11-25 15:39:12,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:12,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:12,743 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_i2c_set_clientdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:12,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:12,744 INFO L85 PathProgramCache]: Analyzing trace with hash 2000580541, now seen corresponding path program 1 times [2022-11-25 15:39:12,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:12,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151606961] [2022-11-25 15:39:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:12,745 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 [2022-11-25 15:39:12,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:12,746 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:12,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:12,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-25 15:39:12,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:12,962 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 [2022-11-25 15:39:12,974 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 [2022-11-25 15:39:13,140 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_563 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_563) |c_#length|)))) is different from true [2022-11-25 15:39:13,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:39:13,166 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 [2022-11-25 15:39:13,183 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:39:13,184 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 [2022-11-25 15:39:13,285 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_564 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_564))))) is different from true [2022-11-25 15:39:13,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:39:13,308 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 [2022-11-25 15:39:13,324 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:39:13,324 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 [2022-11-25 15:39:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2022-11-25 15:39:13,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:39:16,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:16,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151606961] [2022-11-25 15:39:16,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151606961] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:39:16,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1832507720] [2022-11-25 15:39:16,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:16,736 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:39:16,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:39:16,737 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:39:16,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-25 15:39:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:17,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-25 15:39:17,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:17,081 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 [2022-11-25 15:39:17,093 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 [2022-11-25 15:39:17,288 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 15:39:17,289 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 18 [2022-11-25 15:39:17,317 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:39:17,317 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 [2022-11-25 15:39:17,443 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_589 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_589))))) is different from true [2022-11-25 15:39:17,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:39:17,463 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 [2022-11-25 15:39:17,481 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:39:17,482 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 [2022-11-25 15:39:17,602 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 6 not checked. [2022-11-25 15:39:17,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:39:18,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1832507720] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:39:18,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:39:18,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 16 [2022-11-25 15:39:18,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830046259] [2022-11-25 15:39:18,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:39:18,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 15:39:18,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:18,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 15:39:18,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=334, Unknown=3, NotChecked=114, Total=506 [2022-11-25 15:39:18,984 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 17 states, 16 states have (on average 2.1875) internal successors, (35), 14 states have internal predecessors, (35), 3 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-25 15:39:20,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:20,636 INFO L93 Difference]: Finished difference Result 131 states and 136 transitions. [2022-11-25 15:39:20,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:39:20,637 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 14 states have internal predecessors, (35), 3 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 40 [2022-11-25 15:39:20,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:20,638 INFO L225 Difference]: With dead ends: 131 [2022-11-25 15:39:20,638 INFO L226 Difference]: Without dead ends: 131 [2022-11-25 15:39:20,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=89, Invalid=520, Unknown=3, NotChecked=144, Total=756 [2022-11-25 15:39:20,639 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 108 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 10 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 255 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:20,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 842 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 514 Invalid, 9 Unknown, 255 Unchecked, 1.2s Time] [2022-11-25 15:39:20,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-25 15:39:20,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 93. [2022-11-25 15:39:20,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 64 states have (on average 1.296875) internal successors, (83), 80 states have internal predecessors, (83), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 15:39:20,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2022-11-25 15:39:20,644 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 40 [2022-11-25 15:39:20,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:20,645 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2022-11-25 15:39:20,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 14 states have internal predecessors, (35), 3 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-25 15:39:20,645 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2022-11-25 15:39:20,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-25 15:39:20,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:20,646 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] [2022-11-25 15:39:20,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:20,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:21,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 15:39:21,052 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_i2c_set_clientdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:21,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:21,052 INFO L85 PathProgramCache]: Analyzing trace with hash -599580005, now seen corresponding path program 1 times [2022-11-25 15:39:21,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:21,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083558515] [2022-11-25 15:39:21,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:21,053 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 [2022-11-25 15:39:21,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:21,054 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:21,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 (36)] Waiting until timeout for monitored process [2022-11-25 15:39:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:21,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 15:39:21,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:21,267 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 [2022-11-25 15:39:21,304 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 [2022-11-25 15:39:21,327 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 15:39:21,327 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 [2022-11-25 15:39:21,374 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 15:39:21,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:39:21,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:21,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083558515] [2022-11-25 15:39:21,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083558515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:39:21,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:39:21,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:39:21,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601363597] [2022-11-25 15:39:21,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:39:21,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:39:21,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:21,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:39:21,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2022-11-25 15:39:21,377 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:39:21,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:21,700 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2022-11-25 15:39:21,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:39:21,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2022-11-25 15:39:21,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:21,702 INFO L225 Difference]: With dead ends: 113 [2022-11-25 15:39:21,702 INFO L226 Difference]: Without dead ends: 113 [2022-11-25 15:39:21,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=38, Unknown=1, NotChecked=12, Total=72 [2022-11-25 15:39:21,703 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 43 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:21,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 290 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 141 Invalid, 0 Unknown, 117 Unchecked, 0.3s Time] [2022-11-25 15:39:21,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-25 15:39:21,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2022-11-25 15:39:21,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 64 states have (on average 1.28125) internal successors, (82), 79 states have internal predecessors, (82), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 15:39:21,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2022-11-25 15:39:21,708 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 41 [2022-11-25 15:39:21,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:21,709 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2022-11-25 15:39:21,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:39:21,709 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2022-11-25 15:39:21,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-25 15:39:21,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:21,710 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] [2022-11-25 15:39:21,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 (36)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:21,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:21,915 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_i2c_set_clientdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:21,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:21,916 INFO L85 PathProgramCache]: Analyzing trace with hash -599580004, now seen corresponding path program 1 times [2022-11-25 15:39:21,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:21,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115604156] [2022-11-25 15:39:21,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:21,916 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 [2022-11-25 15:39:21,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:21,917 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:21,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:22,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-25 15:39:22,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:22,155 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 [2022-11-25 15:39:22,166 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 [2022-11-25 15:39:22,358 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_649 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_649))))) is different from true [2022-11-25 15:39:22,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:39:22,384 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 [2022-11-25 15:39:22,400 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:39:22,401 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 [2022-11-25 15:39:22,487 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_650 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_650) |c_#length|)))) is different from true [2022-11-25 15:39:22,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:39:22,516 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 [2022-11-25 15:39:22,530 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:39:22,531 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 [2022-11-25 15:39:22,695 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_651 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_651) |c_#length|)))) is different from true [2022-11-25 15:39:22,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:39:22,718 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 [2022-11-25 15:39:22,736 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:39:22,736 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 [2022-11-25 15:39:22,845 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 12 not checked. [2022-11-25 15:39:22,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:39:25,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:25,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115604156] [2022-11-25 15:39:25,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115604156] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:39:25,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1240504081] [2022-11-25 15:39:25,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:25,498 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 15:39:25,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 15:39:25,500 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 15:39:25,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2022-11-25 15:39:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:25,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-25 15:39:25,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:25,876 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 [2022-11-25 15:39:25,884 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 [2022-11-25 15:39:26,077 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 15:39:26,079 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 18 [2022-11-25 15:39:26,104 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:39:26,104 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 [2022-11-25 15:39:26,230 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_684 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_684) |c_#length|)))) is different from true [2022-11-25 15:39:26,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:39:26,252 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 [2022-11-25 15:39:26,267 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:39:26,267 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 [2022-11-25 15:39:26,382 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_685 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_685))) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-25 15:39:26,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:39:26,403 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 [2022-11-25 15:39:26,417 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:39:26,417 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 [2022-11-25 15:39:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 10 not checked. [2022-11-25 15:39:26,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:39:28,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1240504081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:39:28,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:39:28,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 18 [2022-11-25 15:39:28,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390120861] [2022-11-25 15:39:28,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:39:28,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 15:39:28,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:28,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 15:39:28,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=270, Unknown=5, NotChecked=180, Total=506 [2022-11-25 15:39:28,837 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 16 states have internal predecessors, (37), 4 states have call successors, (5), 3 states have call predecessors, (5), 7 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 15:39:30,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:30,636 INFO L93 Difference]: Finished difference Result 150 states and 156 transitions. [2022-11-25 15:39:30,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:39:30,637 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 16 states have internal predecessors, (37), 4 states have call successors, (5), 3 states have call predecessors, (5), 7 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 41 [2022-11-25 15:39:30,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:30,637 INFO L225 Difference]: With dead ends: 150 [2022-11-25 15:39:30,637 INFO L226 Difference]: Without dead ends: 150 [2022-11-25 15:39:30,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=86, Invalid=481, Unknown=5, NotChecked=240, Total=812 [2022-11-25 15:39:30,638 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 155 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 10 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 619 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:30,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 750 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 566 Invalid, 12 Unknown, 619 Unchecked, 1.3s Time] [2022-11-25 15:39:30,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-25 15:39:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 91. [2022-11-25 15:39:30,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 64 states have (on average 1.265625) internal successors, (81), 78 states have internal predecessors, (81), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 15:39:30,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2022-11-25 15:39:30,644 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 41 [2022-11-25 15:39:30,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:30,644 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2022-11-25 15:39:30,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 16 states have internal predecessors, (37), 4 states have call successors, (5), 3 states have call predecessors, (5), 7 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-25 15:39:30,645 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2022-11-25 15:39:30,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-25 15:39:30,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:30,646 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] [2022-11-25 15:39:30,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:30,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:31,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:31,050 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:31,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:31,051 INFO L85 PathProgramCache]: Analyzing trace with hash -359356304, now seen corresponding path program 1 times [2022-11-25 15:39:31,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:31,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58930907] [2022-11-25 15:39:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:31,051 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 [2022-11-25 15:39:31,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:31,053 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:31,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Waiting until timeout for monitored process [2022-11-25 15:39:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:31,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:39:31,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:31,305 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 15:39:31,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:39:31,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:31,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58930907] [2022-11-25 15:39:31,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58930907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:39:31,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:39:31,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:39:31,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480374061] [2022-11-25 15:39:31,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:39:31,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:39:31,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:31,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:39:31,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:39:31,307 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:39:31,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:31,374 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2022-11-25 15:39:31,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:39:31,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-11-25 15:39:31,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:31,377 INFO L225 Difference]: With dead ends: 90 [2022-11-25 15:39:31,377 INFO L226 Difference]: Without dead ends: 90 [2022-11-25 15:39:31,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:39:31,378 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 39 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:31,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 236 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:39:31,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-25 15:39:31,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-11-25 15:39:31,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 64 states have (on average 1.25) internal successors, (80), 77 states have internal predecessors, (80), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 15:39:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2022-11-25 15:39:31,383 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 45 [2022-11-25 15:39:31,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:31,383 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2022-11-25 15:39:31,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:39:31,384 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2022-11-25 15:39:31,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 15:39:31,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:31,385 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, 1] [2022-11-25 15:39:31,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:31,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:31,591 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:31,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:31,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1744856553, now seen corresponding path program 1 times [2022-11-25 15:39:31,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:31,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113359182] [2022-11-25 15:39:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:31,593 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 [2022-11-25 15:39:31,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:31,594 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:31,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:31,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:39:31,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:32,301 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 15:39:32,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:39:32,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:32,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113359182] [2022-11-25 15:39:32,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113359182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:39:32,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:39:32,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:39:32,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332200022] [2022-11-25 15:39:32,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:39:32,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:39:32,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:32,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:39:32,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:39:32,303 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-25 15:39:32,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:32,674 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2022-11-25 15:39:32,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:39:32,676 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 46 [2022-11-25 15:39:32,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:32,676 INFO L225 Difference]: With dead ends: 91 [2022-11-25 15:39:32,676 INFO L226 Difference]: Without dead ends: 91 [2022-11-25 15:39:32,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:39:32,677 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 75 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:32,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 179 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 15:39:32,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-25 15:39:32,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2022-11-25 15:39:32,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 64 states have (on average 1.234375) internal successors, (79), 76 states have internal predecessors, (79), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 15:39:32,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2022-11-25 15:39:32,682 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 46 [2022-11-25 15:39:32,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:32,683 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2022-11-25 15:39:32,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-25 15:39:32,683 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2022-11-25 15:39:32,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 15:39:32,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:32,684 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, 1, 1] [2022-11-25 15:39:32,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:32,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:32,887 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:32,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:32,888 INFO L85 PathProgramCache]: Analyzing trace with hash -599225383, now seen corresponding path program 1 times [2022-11-25 15:39:32,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:32,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432614877] [2022-11-25 15:39:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:32,888 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 [2022-11-25 15:39:32,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:32,889 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:32,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Waiting until timeout for monitored process [2022-11-25 15:39:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:33,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 15:39:33,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:33,182 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 15:39:33,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:39:33,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:33,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432614877] [2022-11-25 15:39:33,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432614877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:39:33,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:39:33,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:39:33,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839572152] [2022-11-25 15:39:33,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:39:33,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:39:33,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:33,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:39:33,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:39:33,185 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:39:33,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:33,694 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2022-11-25 15:39:33,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:39:33,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2022-11-25 15:39:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:33,696 INFO L225 Difference]: With dead ends: 120 [2022-11-25 15:39:33,696 INFO L226 Difference]: Without dead ends: 120 [2022-11-25 15:39:33,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:39:33,697 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 121 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:33,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 214 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 15:39:33,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-25 15:39:33,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 91. [2022-11-25 15:39:33,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 78 states have internal predecessors, (82), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 15:39:33,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2022-11-25 15:39:33,702 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 46 [2022-11-25 15:39:33,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:33,702 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2022-11-25 15:39:33,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:39:33,703 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2022-11-25 15:39:33,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 15:39:33,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:33,704 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, 1, 1] [2022-11-25 15:39:33,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Ended with exit code 0 [2022-11-25 15:39:33,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:33,912 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:33,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:33,912 INFO L85 PathProgramCache]: Analyzing trace with hash -599225382, now seen corresponding path program 1 times [2022-11-25 15:39:33,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:33,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692211661] [2022-11-25 15:39:33,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:33,913 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 [2022-11-25 15:39:33,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:33,915 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:33,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:34,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-25 15:39:34,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:39:34,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:39:35,284 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:39:35,284 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 24 treesize of output 28 [2022-11-25 15:39:35,954 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 15:39:35,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:35,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692211661] [2022-11-25 15:39:35,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692211661] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:39:35,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:39:35,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-25 15:39:35,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97604030] [2022-11-25 15:39:35,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:39:35,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 15:39:35,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:35,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 15:39:35,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-11-25 15:39:35,957 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand has 19 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 6 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2022-11-25 15:39:37,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:37,314 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2022-11-25 15:39:37,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:39:37,316 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 6 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) Word has length 46 [2022-11-25 15:39:37,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:37,317 INFO L225 Difference]: With dead ends: 90 [2022-11-25 15:39:37,317 INFO L226 Difference]: Without dead ends: 90 [2022-11-25 15:39:37,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2022-11-25 15:39:37,319 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 150 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:37,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 500 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 15:39:37,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-25 15:39:37,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-11-25 15:39:37,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 77 states have internal predecessors, (80), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 15:39:37,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2022-11-25 15:39:37,324 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 46 [2022-11-25 15:39:37,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:37,324 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2022-11-25 15:39:37,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 6 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2022-11-25 15:39:37,325 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2022-11-25 15:39:37,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-25 15:39:37,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:37,326 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, 1, 1] [2022-11-25 15:39:37,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:37,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:37,541 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:37,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:37,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1744021614, now seen corresponding path program 1 times [2022-11-25 15:39:37,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:37,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122937653] [2022-11-25 15:39:37,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:37,542 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 [2022-11-25 15:39:37,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:37,543 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:37,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Waiting until timeout for monitored process [2022-11-25 15:39:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:37,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 15:39:37,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:37,730 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 [2022-11-25 15:39:37,821 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 15:39:37,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:39:37,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:37,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122937653] [2022-11-25 15:39:37,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122937653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:39:37,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:39:37,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:39:37,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54079767] [2022-11-25 15:39:37,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:39:37,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:39:37,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:37,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:39:37,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:39:37,824 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:39:38,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:38,132 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2022-11-25 15:39:38,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:39:38,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2022-11-25 15:39:38,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:38,134 INFO L225 Difference]: With dead ends: 100 [2022-11-25 15:39:38,134 INFO L226 Difference]: Without dead ends: 100 [2022-11-25 15:39:38,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:39:38,135 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 51 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:38,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 171 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 15:39:38,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-25 15:39:38,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2022-11-25 15:39:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 79 states have internal predecessors, (83), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-25 15:39:38,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2022-11-25 15:39:38,140 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 47 [2022-11-25 15:39:38,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:38,140 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2022-11-25 15:39:38,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:39:38,141 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2022-11-25 15:39:38,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-25 15:39:38,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:38,142 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, 1, 1, 1] [2022-11-25 15:39:38,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:38,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:38,347 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:38,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:38,348 INFO L85 PathProgramCache]: Analyzing trace with hash -236469805, now seen corresponding path program 1 times [2022-11-25 15:39:38,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:38,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470144008] [2022-11-25 15:39:38,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:38,348 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 [2022-11-25 15:39:38,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:38,349 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:38,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:38,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:39:38,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 15:39:38,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:39:38,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:38,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470144008] [2022-11-25 15:39:38,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470144008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:39:38,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:39:38,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:39:38,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100169628] [2022-11-25 15:39:38,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:39:38,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:39:38,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:38,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:39:38,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:39:38,586 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:39:38,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:38,633 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2022-11-25 15:39:38,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:39:38,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2022-11-25 15:39:38,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:38,634 INFO L225 Difference]: With dead ends: 115 [2022-11-25 15:39:38,634 INFO L226 Difference]: Without dead ends: 115 [2022-11-25 15:39:38,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:39:38,635 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 32 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:38,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 373 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:39:38,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-25 15:39:38,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87. [2022-11-25 15:39:38,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 74 states have internal predecessors, (77), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-25 15:39:38,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2022-11-25 15:39:38,640 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 47 [2022-11-25 15:39:38,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:38,640 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2022-11-25 15:39:38,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:39:38,640 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2022-11-25 15:39:38,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-25 15:39:38,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:38,641 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, 1, 1, 1, 1] [2022-11-25 15:39:38,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Ended with exit code 0 [2022-11-25 15:39:38,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:38,847 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:38,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:38,848 INFO L85 PathProgramCache]: Analyzing trace with hash -967522539, now seen corresponding path program 1 times [2022-11-25 15:39:38,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:38,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67335114] [2022-11-25 15:39:38,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:38,849 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 [2022-11-25 15:39:38,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:38,850 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:38,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 (45)] Waiting until timeout for monitored process [2022-11-25 15:39:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:39,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 15:39:39,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:39,199 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 15:39:39,200 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 [2022-11-25 15:39:39,385 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 [2022-11-25 15:39:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 15:39:39,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:39:39,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:39,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67335114] [2022-11-25 15:39:39,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67335114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:39:39,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:39:39,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 15:39:39,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095346561] [2022-11-25 15:39:39,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:39:39,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 15:39:39,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:39,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 15:39:39,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:39:39,444 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-25 15:39:40,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:40,357 INFO L93 Difference]: Finished difference Result 128 states and 131 transitions. [2022-11-25 15:39:40,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 15:39:40,358 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2022-11-25 15:39:40,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:40,359 INFO L225 Difference]: With dead ends: 128 [2022-11-25 15:39:40,359 INFO L226 Difference]: Without dead ends: 128 [2022-11-25 15:39:40,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-11-25 15:39:40,360 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 162 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:40,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 419 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 15:39:40,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-25 15:39:40,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 84. [2022-11-25 15:39:40,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 71 states have internal predecessors, (74), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-25 15:39:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2022-11-25 15:39:40,365 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 49 [2022-11-25 15:39:40,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:40,365 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2022-11-25 15:39:40,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-25 15:39:40,366 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2022-11-25 15:39:40,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 15:39:40,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:40,367 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:39:40,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 (45)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:40,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:40,571 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:40,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:40,572 INFO L85 PathProgramCache]: Analyzing trace with hash 921264785, now seen corresponding path program 1 times [2022-11-25 15:39:40,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:40,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581636401] [2022-11-25 15:39:40,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:40,573 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 [2022-11-25 15:39:40,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:40,574 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:40,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:40,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-25 15:39:40,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:40,999 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 13 treesize of output 9 [2022-11-25 15:39:41,010 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 13 treesize of output 9 [2022-11-25 15:39:41,203 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 [2022-11-25 15:39:41,206 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 [2022-11-25 15:39:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 15:39:41,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:39:42,244 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 21 [2022-11-25 15:39:42,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:39:42,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:39:42,472 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 30 treesize of output 24 [2022-11-25 15:39:42,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:39:42,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:39:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 15:39:42,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:42,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581636401] [2022-11-25 15:39:42,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581636401] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 15:39:42,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:39:42,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 19 [2022-11-25 15:39:42,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4264100] [2022-11-25 15:39:42,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:39:42,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 15:39:42,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:42,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 15:39:42,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-25 15:39:42,687 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:39:43,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:43,939 INFO L93 Difference]: Finished difference Result 126 states and 127 transitions. [2022-11-25 15:39:43,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:39:43,940 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2022-11-25 15:39:43,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:43,941 INFO L225 Difference]: With dead ends: 126 [2022-11-25 15:39:43,942 INFO L226 Difference]: Without dead ends: 126 [2022-11-25 15:39:43,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-11-25 15:39:43,943 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 157 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:43,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 587 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 15:39:43,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-25 15:39:43,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 90. [2022-11-25 15:39:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 69 states have (on average 1.1594202898550725) internal successors, (80), 77 states have internal predecessors, (80), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-25 15:39:43,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2022-11-25 15:39:43,947 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 51 [2022-11-25 15:39:43,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:43,947 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2022-11-25 15:39:43,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:39:43,948 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2022-11-25 15:39:43,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 15:39:43,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:43,949 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:39:43,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:44,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:44,159 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:44,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:44,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1505554682, now seen corresponding path program 1 times [2022-11-25 15:39:44,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:44,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203033641] [2022-11-25 15:39:44,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:44,161 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 [2022-11-25 15:39:44,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:44,162 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:44,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Waiting until timeout for monitored process [2022-11-25 15:39:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:44,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:39:44,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 15:39:44,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:39:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 15:39:44,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:44,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203033641] [2022-11-25 15:39:44,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203033641] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:39:44,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:39:44,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2022-11-25 15:39:44,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141305572] [2022-11-25 15:39:44,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:39:44,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:39:44,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:44,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:39:44,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:39:44,585 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:39:44,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:44,632 INFO L93 Difference]: Finished difference Result 89 states and 92 transitions. [2022-11-25 15:39:44,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:39:44,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2022-11-25 15:39:44,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:44,633 INFO L225 Difference]: With dead ends: 89 [2022-11-25 15:39:44,633 INFO L226 Difference]: Without dead ends: 89 [2022-11-25 15:39:44,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:39:44,634 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 27 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:44,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 218 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:39:44,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-25 15:39:44,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-25 15:39:44,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 69 states have (on average 1.144927536231884) internal successors, (79), 76 states have internal predecessors, (79), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-25 15:39:44,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2022-11-25 15:39:44,638 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 52 [2022-11-25 15:39:44,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:44,638 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2022-11-25 15:39:44,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:39:44,639 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2022-11-25 15:39:44,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 15:39:44,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:44,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:39:44,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Ended with exit code 0 [2022-11-25 15:39:44,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:44,847 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:44,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:44,848 INFO L85 PathProgramCache]: Analyzing trace with hash 572445235, now seen corresponding path program 1 times [2022-11-25 15:39:44,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:44,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274338955] [2022-11-25 15:39:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:44,848 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 [2022-11-25 15:39:44,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:44,849 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:44,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:45,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:39:45,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 15:39:45,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:39:46,093 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 15:39:46,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:46,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274338955] [2022-11-25 15:39:46,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274338955] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:39:46,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:39:46,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2022-11-25 15:39:46,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978676111] [2022-11-25 15:39:46,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:39:46,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 15:39:46,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:46,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 15:39:46,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:39:46,096 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-25 15:39:46,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:46,378 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2022-11-25 15:39:46,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:39:46,380 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 53 [2022-11-25 15:39:46,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:46,380 INFO L225 Difference]: With dead ends: 90 [2022-11-25 15:39:46,381 INFO L226 Difference]: Without dead ends: 90 [2022-11-25 15:39:46,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:39:46,381 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 51 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:46,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 175 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 15:39:46,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-25 15:39:46,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2022-11-25 15:39:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 75 states have internal predecessors, (78), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-25 15:39:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2022-11-25 15:39:46,385 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 53 [2022-11-25 15:39:46,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:46,385 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2022-11-25 15:39:46,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-25 15:39:46,386 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2022-11-25 15:39:46,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 15:39:46,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:46,387 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:39:46,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:46,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:46,599 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:46,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:46,600 INFO L85 PathProgramCache]: Analyzing trace with hash -928199467, now seen corresponding path program 1 times [2022-11-25 15:39:46,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:46,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908586594] [2022-11-25 15:39:46,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:46,600 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 [2022-11-25 15:39:46,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:46,602 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:46,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Waiting until timeout for monitored process [2022-11-25 15:39:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:46,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-25 15:39:46,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:47,111 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 13 treesize of output 9 [2022-11-25 15:39:47,289 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 [2022-11-25 15:39:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 15:39:47,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:39:47,965 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 30 treesize of output 24 [2022-11-25 15:39:48,146 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 30 treesize of output 24 [2022-11-25 15:39:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 15:39:48,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:48,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908586594] [2022-11-25 15:39:48,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908586594] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 15:39:48,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:39:48,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 22 [2022-11-25 15:39:48,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837223992] [2022-11-25 15:39:48,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:39:48,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 15:39:48,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:48,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 15:39:48,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-11-25 15:39:48,490 INFO L87 Difference]: Start difference. First operand 88 states and 91 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-25 15:39:49,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:49,623 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2022-11-25 15:39:49,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:39:49,624 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54 [2022-11-25 15:39:49,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:49,625 INFO L225 Difference]: With dead ends: 87 [2022-11-25 15:39:49,625 INFO L226 Difference]: Without dead ends: 87 [2022-11-25 15:39:49,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-11-25 15:39:49,626 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 189 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:49,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 408 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 15:39:49,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-25 15:39:49,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-11-25 15:39:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 69 states have (on average 1.1159420289855073) internal successors, (77), 74 states have internal predecessors, (77), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-25 15:39:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2022-11-25 15:39:49,631 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 54 [2022-11-25 15:39:49,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:49,631 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2022-11-25 15:39:49,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-25 15:39:49,632 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2022-11-25 15:39:49,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 15:39:49,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:49,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:39:49,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:49,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:49,848 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:49,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:49,849 INFO L85 PathProgramCache]: Analyzing trace with hash 565933224, now seen corresponding path program 1 times [2022-11-25 15:39:49,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:49,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904787195] [2022-11-25 15:39:49,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:49,850 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 [2022-11-25 15:39:49,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:49,852 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:49,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:50,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:39:50,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:50,095 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 [2022-11-25 15:39:50,273 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:39:50,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:39:50,452 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:39:50,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:50,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904787195] [2022-11-25 15:39:50,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904787195] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:39:50,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:39:50,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2022-11-25 15:39:50,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596403036] [2022-11-25 15:39:50,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:39:50,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:39:50,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:50,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:39:50,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:39:50,455 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 15:39:50,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:50,964 INFO L93 Difference]: Finished difference Result 96 states and 99 transitions. [2022-11-25 15:39:50,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:39:50,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2022-11-25 15:39:50,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:50,965 INFO L225 Difference]: With dead ends: 96 [2022-11-25 15:39:50,965 INFO L226 Difference]: Without dead ends: 96 [2022-11-25 15:39:50,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:39:50,966 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 33 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:50,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 236 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 15:39:50,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-25 15:39:50,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2022-11-25 15:39:50,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 78 states have internal predecessors, (81), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-25 15:39:50,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2022-11-25 15:39:50,970 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 54 [2022-11-25 15:39:50,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:50,970 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2022-11-25 15:39:50,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 2 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 15:39:50,971 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2022-11-25 15:39:50,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 15:39:50,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:50,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:39:50,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:51,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:51,187 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:51,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:51,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1290587706, now seen corresponding path program 1 times [2022-11-25 15:39:51,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:51,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768429961] [2022-11-25 15:39:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:51,188 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 [2022-11-25 15:39:51,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:51,189 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:51,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Waiting until timeout for monitored process [2022-11-25 15:39:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:39:51,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-25 15:39:51,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:39:52,437 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 13 treesize of output 9 [2022-11-25 15:39:52,937 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 [2022-11-25 15:39:53,393 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:39:53,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:39:54,304 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 30 treesize of output 24 [2022-11-25 15:39:54,539 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 30 treesize of output 24 [2022-11-25 15:39:55,047 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 15:39:55,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:39:55,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768429961] [2022-11-25 15:39:55,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768429961] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 15:39:55,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:39:55,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 31 [2022-11-25 15:39:55,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516251064] [2022-11-25 15:39:55,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:39:55,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 15:39:55,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:39:55,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 15:39:55,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2022-11-25 15:39:55,050 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-25 15:39:58,932 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 [] [2022-11-25 15:39:59,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:39:59,064 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2022-11-25 15:39:59,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:39:59,065 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 55 [2022-11-25 15:39:59,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:39:59,066 INFO L225 Difference]: With dead ends: 101 [2022-11-25 15:39:59,066 INFO L226 Difference]: Without dead ends: 101 [2022-11-25 15:39:59,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=219, Invalid=1341, Unknown=0, NotChecked=0, Total=1560 [2022-11-25 15:39:59,068 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 198 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:39:59,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 410 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 252 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-11-25 15:39:59,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-25 15:39:59,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 90. [2022-11-25 15:39:59,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 73 states have (on average 1.095890410958904) internal successors, (80), 77 states have internal predecessors, (80), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-25 15:39:59,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2022-11-25 15:39:59,071 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 55 [2022-11-25 15:39:59,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:39:59,072 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2022-11-25 15:39:59,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-25 15:39:59,072 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2022-11-25 15:39:59,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 15:39:59,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:39:59,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:39:59,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:39:59,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:59,287 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-11-25 15:39:59,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:39:59,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1353513335, now seen corresponding path program 1 times [2022-11-25 15:39:59,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:39:59,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595534125] [2022-11-25 15:39:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:39:59,288 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 [2022-11-25 15:39:59,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:39:59,289 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:39:59,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:39:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:39:59,565 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:39:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:39:59,791 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-25 15:39:59,807 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 15:39:59,808 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (29 of 30 remaining) [2022-11-25 15:39:59,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 30 remaining) [2022-11-25 15:39:59,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 30 remaining) [2022-11-25 15:39:59,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 30 remaining) [2022-11-25 15:39:59,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 30 remaining) [2022-11-25 15:39:59,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 30 remaining) [2022-11-25 15:39:59,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 30 remaining) [2022-11-25 15:39:59,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 30 remaining) [2022-11-25 15:39:59,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 30 remaining) [2022-11-25 15:39:59,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 30 remaining) [2022-11-25 15:39:59,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 30 remaining) [2022-11-25 15:39:59,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (18 of 30 remaining) [2022-11-25 15:39:59,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE (17 of 30 remaining) [2022-11-25 15:39:59,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE (16 of 30 remaining) [2022-11-25 15:39:59,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 30 remaining) [2022-11-25 15:39:59,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 30 remaining) [2022-11-25 15:39:59,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE (13 of 30 remaining) [2022-11-25 15:39:59,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (12 of 30 remaining) [2022-11-25 15:39:59,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (11 of 30 remaining) [2022-11-25 15:39:59,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE (10 of 30 remaining) [2022-11-25 15:39:59,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE (9 of 30 remaining) [2022-11-25 15:39:59,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE (8 of 30 remaining) [2022-11-25 15:39:59,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE (7 of 30 remaining) [2022-11-25 15:39:59,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE (6 of 30 remaining) [2022-11-25 15:39:59,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE (5 of 30 remaining) [2022-11-25 15:39:59,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE (4 of 30 remaining) [2022-11-25 15:39:59,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE (3 of 30 remaining) [2022-11-25 15:39:59,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK (2 of 30 remaining) [2022-11-25 15:39:59,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_i2c_set_clientdataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 30 remaining) [2022-11-25 15:39:59,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_i2c_set_clientdataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 30 remaining) [2022-11-25 15:39:59,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:40:00,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:40:00,022 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:40:00,027 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 15:40:00,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 03:40:00 BoogieIcfgContainer [2022-11-25 15:40:00,118 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 15:40:00,118 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 15:40:00,119 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 15:40:00,119 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 15:40:00,120 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:35:29" (3/4) ... [2022-11-25 15:40:00,122 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 15:40:00,224 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 15:40:00,225 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 15:40:00,225 INFO L158 Benchmark]: Toolchain (without parser) took 272469.65ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 68.5MB in the beginning and 26.4MB in the end (delta: 42.1MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. [2022-11-25 15:40:00,226 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 69.2MB. Free memory was 47.9MB in the beginning and 47.8MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:40:00,226 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1049.25ms. Allocated memory is still 92.3MB. Free memory was 68.2MB in the beginning and 65.0MB in the end (delta: 3.2MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-11-25 15:40:00,226 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.27ms. Allocated memory is still 92.3MB. Free memory was 65.0MB in the beginning and 62.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:40:00,227 INFO L158 Benchmark]: Boogie Preprocessor took 68.86ms. Allocated memory is still 92.3MB. Free memory was 62.5MB in the beginning and 60.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:40:00,227 INFO L158 Benchmark]: RCFGBuilder took 807.42ms. Allocated memory is still 92.3MB. Free memory was 60.5MB in the beginning and 39.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-25 15:40:00,229 INFO L158 Benchmark]: TraceAbstraction took 270316.40ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 38.8MB in the beginning and 30.6MB in the end (delta: 8.1MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2022-11-25 15:40:00,231 INFO L158 Benchmark]: Witness Printer took 106.44ms. Allocated memory is still 111.1MB. Free memory was 30.6MB in the beginning and 26.4MB in the end (delta: 4.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-25 15:40:00,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67ms. Allocated memory is still 69.2MB. Free memory was 47.9MB in the beginning and 47.8MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1049.25ms. Allocated memory is still 92.3MB. Free memory was 68.2MB in the beginning and 65.0MB in the end (delta: 3.2MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.27ms. Allocated memory is still 92.3MB. Free memory was 65.0MB in the beginning and 62.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.86ms. Allocated memory is still 92.3MB. Free memory was 62.5MB in the beginning and 60.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 807.42ms. Allocated memory is still 92.3MB. Free memory was 60.5MB in the beginning and 39.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 270316.40ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 38.8MB in the beginning and 30.6MB in the end (delta: 8.1MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. * Witness Printer took 106.44ms. Allocated memory is still 111.1MB. Free memory was 30.6MB in the beginning and 26.4MB in the end (delta: 4.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 799]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={1:0}] [L824] CALL entry_point() [L803] CALL, EXPR ldv_malloc(sizeof(struct ldv_i2c_client)) VAL [\old(size)=20, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L803] RET, EXPR ldv_malloc(sizeof(struct ldv_i2c_client)) VAL [ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct ldv_i2c_client))={10:0}] [L803] struct ldv_i2c_client *c11 = (struct ldv_i2c_client *)ldv_malloc(sizeof(struct ldv_i2c_client)); [L804] COND FALSE !(!c11) VAL [c11={10:0}, ldv_global_msg_list={1:0}] [L806] CALL, EXPR ldv_malloc(sizeof(struct ldv_m88ts2022_config)) VAL [\old(size)=4, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L806] RET, EXPR ldv_malloc(sizeof(struct ldv_m88ts2022_config)) VAL [c11={10:0}, ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct ldv_m88ts2022_config))={5:0}] [L805-L806] struct ldv_m88ts2022_config *cfg = (struct ldv_m88ts2022_config *) ldv_malloc(sizeof(struct ldv_m88ts2022_config)); [L807] COND FALSE !(!cfg) VAL [c11={10:0}, cfg={5:0}, ldv_global_msg_list={1:0}] [L808] c11->dev.platform_data = cfg VAL [c11={10:0}, cfg={5:0}, ldv_global_msg_list={1:0}] [L810] CALL, EXPR ldv_malloc(sizeof(struct ldv_dvb_frontend)) VAL [\old(size)=4, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L810] RET, EXPR ldv_malloc(sizeof(struct ldv_dvb_frontend)) VAL [c11={10:0}, cfg={5:0}, ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct ldv_dvb_frontend))={2:0}] [L809-L810] struct ldv_dvb_frontend *fe = (struct ldv_dvb_frontend *) ldv_malloc(sizeof(struct ldv_dvb_frontend)); [L811] COND FALSE !(!fe) VAL [c11={10:0}, cfg={5:0}, fe={2:0}, ldv_global_msg_list={1:0}] [L812] cfg->fe = fe VAL [c11={10:0}, cfg={5:0}, fe={2:0}, ldv_global_msg_list={1:0}] [L813] CALL alloc_2_11(c11) [L784] EXPR client->dev.platform_data VAL [client={10:0}, client={10:0}, client->dev.platform_data={5:0}, ldv_global_msg_list={1:0}] [L784] struct ldv_m88ts2022_config *cfg = client->dev.platform_data; [L785] EXPR cfg->fe VAL [cfg={5:0}, cfg->fe={2:0}, client={10:0}, client={10:0}, ldv_global_msg_list={1:0}] [L785] struct ldv_dvb_frontend *fe = cfg->fe; [L786] CALL, EXPR ldv_malloc(sizeof(struct Data11)) VAL [\old(size)=12, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L786] RET, EXPR ldv_malloc(sizeof(struct Data11)) VAL [cfg={5:0}, client={10:0}, client={10:0}, fe={2:0}, ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct Data11))={3:0}] [L786] struct Data11 *priv = (struct Data11*)ldv_malloc(sizeof(struct Data11)); [L787] COND FALSE !(!priv) VAL [cfg={5:0}, client={10:0}, client={10:0}, fe={2:0}, ldv_global_msg_list={1:0}, priv={3:0}] [L788] fe->tuner_priv = priv VAL [cfg={5:0}, client={10:0}, client={10:0}, fe={2:0}, ldv_global_msg_list={1:0}, priv={3:0}] [L789] CALL ldv_i2c_set_clientdata(client, priv) VAL [ldv_global_msg_list={1:0}] [L778] CALL ldv_dev_set_drvdata(&dev->dev, data) [L623] dev->driver_data = data VAL [data={3:0}, data={3:0}, dev={10:0}, dev={10:0}, ldv_global_msg_list={1:0}] [L778] RET ldv_dev_set_drvdata(&dev->dev, data) [L789] RET ldv_i2c_set_clientdata(client, priv) VAL [cfg={5:0}, client={10:0}, client={10:0}, fe={2:0}, ldv_global_msg_list={1:0}, priv={3:0}] [L790] free(priv) VAL [cfg={5:0}, client={10:0}, client={10:0}, fe={2:0}, ldv_global_msg_list={1:0}, priv={3:0}] [L790] free(priv) VAL [cfg={5:0}, client={10:0}, client={10:0}, fe={2:0}, ldv_global_msg_list={1:0}, priv={3:0}] [L790] free(priv) [L791] return 0; VAL [\result=0, cfg={5:0}, client={10:0}, client={10:0}, fe={2:0}, ldv_global_msg_list={1:0}, priv={3:0}] [L813] RET alloc_2_11(c11) [L814] CALL free_11(c11) [L797] CALL, EXPR ldv_i2c_get_clientdata(client) [L774] CALL, EXPR ldv_dev_get_drvdata(&dev->dev) [L619] EXPR dev->driver_data VAL [dev={10:0}, dev={10:0}, dev->driver_data={3:0}, ldv_global_msg_list={1:0}] [L619] return dev->driver_data; [L774] RET, EXPR ldv_dev_get_drvdata(&dev->dev) [L774] return ldv_dev_get_drvdata(&dev->dev); [L797] RET, EXPR ldv_i2c_get_clientdata(client) [L797] void *priv = (struct Data11*)ldv_i2c_get_clientdata(client); [L798] COND TRUE \read(*priv) VAL [client={10:0}, client={10:0}, ldv_global_msg_list={1:0}, priv={3:0}] [L799] free(priv) VAL [client={10:0}, client={10:0}, ldv_global_msg_list={1:0}, priv={3:0}] [L799] free(priv) VAL [client={10:0}, client={10:0}, ldv_global_msg_list={1:0}, priv={3:0}] [L799] free(priv) VAL [client={10:0}, client={10:0}, ldv_global_msg_list={1:0}, priv={3:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 790]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 790]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 790]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 799]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 799]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 815]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 815]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 815]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 817]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 817]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 817]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 819]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 819]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 819]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 823]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 90 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 270.1s, OverallIterations: 40, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 141.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 mSolverCounterUnknown, 4729 SdHoareTripleChecker+Valid, 95.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4656 mSDsluCounter, 20461 SdHoareTripleChecker+Invalid, 91.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4305 IncrementalHoareTripleChecker+Unchecked, 17135 mSDsCounter, 542 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14398 IncrementalHoareTripleChecker+Invalid, 19318 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 542 mSolverCounterUnsat, 3326 mSDtfsCounter, 14398 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2464 GetRequests, 1806 SyntacticMatches, 38 SemanticMatches, 620 ConstructedPredicates, 41 IntricatePredicates, 5 DeprecatedPredicates, 3605 ImplicationChecksByTransitivity, 131.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=10, InterpolantAutomatonStates: 374, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 39 MinimizatonAttempts, 1430 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 108.4s InterpolantComputationTime, 1754 NumberOfCodeBlocks, 1754 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 2088 ConstructedInterpolants, 343 QuantifiedInterpolants, 14454 SizeOfPredicates, 352 NumberOfNonLiveVariables, 6714 ConjunctsInSsa, 1035 ConjunctsInUnsatCore, 61 InterpolantComputations, 20 PerfectInterpolantSequences, 766/1012 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-25 15:40:00,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b778f474-f315-4564-ac89-90d0f2c92a05/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free)