./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 --- 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 17:25:46,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:25:46,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:25:46,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:25:46,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:25:46,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:25:46,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:25:46,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:25:46,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:25:46,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:25:46,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:25:46,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:25:46,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:25:46,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:25:46,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:25:46,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:25:46,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:25:46,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:25:46,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:25:46,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:25:46,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:25:46,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:25:46,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:25:46,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:25:46,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:25:46,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:25:46,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:25:46,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:25:46,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:25:46,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:25:46,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:25:46,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:25:46,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:25:46,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:25:46,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:25:46,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:25:46,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:25:46,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:25:46,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:25:46,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:25:46,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:25:46,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 17:25:46,821 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:25:46,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:25:46,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:25:46,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:25:46,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:25:46,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:25:46,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:25:46,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:25:46,825 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:25:46,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:25:46,826 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:25:46,827 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:25:46,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:25:46,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:25:46,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:25:46,827 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:25:46,828 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:25:46,828 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:25:46,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:25:46,828 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:25:46,829 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:25:46,829 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:25:46,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:25:46,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:25:46,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:25:46,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:25:46,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:25:46,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:25:46,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:25:46,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:25:46,831 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:25:46,831 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:25:46,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:25:46,832 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_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 [2022-11-25 17:25:47,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:25:47,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:25:47,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:25:47,208 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:25:47,209 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:25:47,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2022-11-25 17:25:50,278 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:25:50,703 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:25:50,705 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2022-11-25 17:25:50,729 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/data/e64c37303/b0c515db341a40908c2efe371a98cb14/FLAG0a1cfdc17 [2022-11-25 17:25:50,752 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/data/e64c37303/b0c515db341a40908c2efe371a98cb14 [2022-11-25 17:25:50,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:25:50,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:25:50,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:25:50,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:25:50,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:25:50,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:25:50" (1/1) ... [2022-11-25 17:25:50,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42b14535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:50, skipping insertion in model container [2022-11-25 17:25:50,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:25:50" (1/1) ... [2022-11-25 17:25:50,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:25:50,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:25:51,491 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44118,44131] [2022-11-25 17:25:51,520 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44660,44673] [2022-11-25 17:25:51,523 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 17:25:51,634 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56247,56260] [2022-11-25 17:25:51,635 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56368,56381] [2022-11-25 17:25:51,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:25:51,663 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 17:25:51,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d1d964d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:51, skipping insertion in model container [2022-11-25 17:25:51,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:25:51,664 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 17:25:51,666 INFO L158 Benchmark]: Toolchain (without parser) took 905.80ms. Allocated memory is still 121.6MB. Free memory was 77.6MB in the beginning and 56.4MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-25 17:25:51,666 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 93.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:25:51,667 INFO L158 Benchmark]: CACSL2BoogieTranslator took 898.90ms. Allocated memory is still 121.6MB. Free memory was 77.6MB in the beginning and 56.4MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-25 17:25:51,668 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 93.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 898.90ms. Allocated memory is still 121.6MB. Free memory was 77.6MB in the beginning and 56.4MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 --- 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 17:25:54,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:25:54,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:25:54,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:25:54,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:25:54,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:25:54,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:25:54,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:25:54,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:25:54,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:25:54,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:25:54,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:25:54,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:25:54,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:25:54,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:25:54,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:25:54,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:25:54,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:25:54,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:25:54,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:25:54,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:25:54,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:25:54,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:25:54,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:25:54,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:25:54,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:25:54,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:25:54,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:25:54,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:25:54,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:25:54,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:25:54,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:25:54,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:25:54,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:25:54,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:25:54,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:25:54,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:25:54,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:25:54,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:25:54,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:25:54,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:25:54,293 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 17:25:54,350 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:25:54,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:25:54,352 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:25:54,352 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:25:54,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:25:54,353 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:25:54,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:25:54,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:25:54,355 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:25:54,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:25:54,356 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:25:54,357 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:25:54,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:25:54,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:25:54,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:25:54,358 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:25:54,358 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:25:54,358 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:25:54,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:25:54,359 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:25:54,359 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 17:25:54,359 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 17:25:54,359 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:25:54,360 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:25:54,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:25:54,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:25:54,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:25:54,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:25:54,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:25:54,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:25:54,361 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 17:25:54,362 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 17:25:54,362 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:25:54,362 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:25:54,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:25:54,363 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 17:25:54,363 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_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 [2022-11-25 17:25:54,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:25:54,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:25:54,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:25:54,885 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:25:54,886 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:25:54,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2022-11-25 17:25:58,163 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:25:58,549 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:25:58,549 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2022-11-25 17:25:58,576 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/data/3e07670a7/59c2ab9d22214474b83318d5a615fe18/FLAGad6e5c12e [2022-11-25 17:25:58,590 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/data/3e07670a7/59c2ab9d22214474b83318d5a615fe18 [2022-11-25 17:25:58,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:25:58,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:25:58,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:25:58,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:25:58,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:25:58,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:25:58" (1/1) ... [2022-11-25 17:25:58,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac5c48b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:58, skipping insertion in model container [2022-11-25 17:25:58,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:25:58" (1/1) ... [2022-11-25 17:25:58,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:25:58,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:25:59,478 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44118,44131] [2022-11-25 17:25:59,497 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44660,44673] [2022-11-25 17:25:59,502 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 17:25:59,647 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56247,56260] [2022-11-25 17:25:59,648 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56368,56381] [2022-11-25 17:25:59,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:25:59,690 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 17:25:59,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:25:59,739 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44118,44131] [2022-11-25 17:25:59,744 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44660,44673] [2022-11-25 17:25:59,747 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 17:25:59,847 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56247,56260] [2022-11-25 17:25:59,848 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56368,56381] [2022-11-25 17:25:59,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:25:59,856 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:25:59,900 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44118,44131] [2022-11-25 17:25:59,902 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44660,44673] [2022-11-25 17:25:59,903 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 17:25:59,996 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56247,56260] [2022-11-25 17:26:00,002 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56368,56381] [2022-11-25 17:26:00,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:26:00,091 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:26:00,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00 WrapperNode [2022-11-25 17:26:00,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:26:00,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:26:00,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:26:00,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:26:00,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,234 INFO L138 Inliner]: procedures = 285, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1038 [2022-11-25 17:26:00,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:26:00,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:26:00,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:26:00,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:26:00,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,313 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:26:00,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:26:00,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:26:00,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:26:00,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:26:00,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:00,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:26:00,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:26:00,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-25 17:26:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 17:26:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:26:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-25 17:26:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 17:26:00,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:26:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 17:26:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 17:26:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-11-25 17:26:00,459 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-11-25 17:26:00,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 17:26:00,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 17:26:00,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:26:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:26:00,461 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-11-25 17:26:00,462 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-11-25 17:26:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 17:26:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-11-25 17:26:00,463 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-11-25 17:26:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:26:00,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:26:00,815 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:26:00,817 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:26:06,729 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:26:06,748 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:26:06,748 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-25 17:26:06,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:26:06 BoogieIcfgContainer [2022-11-25 17:26:06,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:26:06,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:26:06,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:26:06,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:26:06,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:25:58" (1/3) ... [2022-11-25 17:26:06,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9b5726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:26:06, skipping insertion in model container [2022-11-25 17:26:06,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (2/3) ... [2022-11-25 17:26:06,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9b5726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:26:06, skipping insertion in model container [2022-11-25 17:26:06,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:26:06" (3/3) ... [2022-11-25 17:26:06,763 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test6-1.i [2022-11-25 17:26:06,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:26:06,787 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 531 error locations. [2022-11-25 17:26:06,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:26:06,912 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;@5367d2f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:26:06,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 531 error locations. [2022-11-25 17:26:06,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 1082 states, 533 states have (on average 2.2288930581613506) internal successors, (1188), 1064 states have internal predecessors, (1188), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-25 17:26:06,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 17:26:06,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:06,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 17:26:06,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:26:06,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:06,954 INFO L85 PathProgramCache]: Analyzing trace with hash 77521, now seen corresponding path program 1 times [2022-11-25 17:26:06,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:26:06,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490471011] [2022-11-25 17:26:06,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:06,974 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 17:26:06,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:26:06,990 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:07,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:07,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:26:07,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:07,355 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 17:26:07,394 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 17:26:07,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:26:07,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:26:07,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490471011] [2022-11-25 17:26:07,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490471011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:07,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:07,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:26:07,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932833235] [2022-11-25 17:26:07,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:07,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:07,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:26:07,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:07,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:07,474 INFO L87 Difference]: Start difference. First operand has 1082 states, 533 states have (on average 2.2288930581613506) internal successors, (1188), 1064 states have internal predecessors, (1188), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:10,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:10,323 INFO L93 Difference]: Finished difference Result 1161 states and 1227 transitions. [2022-11-25 17:26:10,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:10,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-25 17:26:10,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:10,347 INFO L225 Difference]: With dead ends: 1161 [2022-11-25 17:26:10,348 INFO L226 Difference]: Without dead ends: 1159 [2022-11-25 17:26:10,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:10,354 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 714 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:10,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1040 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-25 17:26:10,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-11-25 17:26:10,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1102. [2022-11-25 17:26:10,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 567 states have (on average 2.0846560846560847) internal successors, (1182), 1085 states have internal predecessors, (1182), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-25 17:26:10,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1208 transitions. [2022-11-25 17:26:10,520 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1208 transitions. Word has length 3 [2022-11-25 17:26:10,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:10,521 INFO L495 AbstractCegarLoop]: Abstraction has 1102 states and 1208 transitions. [2022-11-25 17:26:10,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:10,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1208 transitions. [2022-11-25 17:26:10,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 17:26:10,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:10,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 17:26:10,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:10,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:10,726 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:26:10,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:10,727 INFO L85 PathProgramCache]: Analyzing trace with hash 77522, now seen corresponding path program 1 times [2022-11-25 17:26:10,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:26:10,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922979339] [2022-11-25 17:26:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:10,728 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 17:26:10,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:26:10,731 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:10,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:10,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:26:10,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:10,910 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 17:26:10,927 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 17:26:10,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:26:10,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:26:10,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922979339] [2022-11-25 17:26:10,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922979339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:10,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:10,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:26:10,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370052593] [2022-11-25 17:26:10,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:10,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:10,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:26:10,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:10,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:10,937 INFO L87 Difference]: Start difference. First operand 1102 states and 1208 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:15,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:15,103 INFO L93 Difference]: Finished difference Result 1496 states and 1636 transitions. [2022-11-25 17:26:15,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:15,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-25 17:26:15,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:15,110 INFO L225 Difference]: With dead ends: 1496 [2022-11-25 17:26:15,110 INFO L226 Difference]: Without dead ends: 1496 [2022-11-25 17:26:15,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:15,112 INFO L413 NwaCegarLoop]: 941 mSDtfsCounter, 418 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:15,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 1534 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 17:26:15,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2022-11-25 17:26:15,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1306. [2022-11-25 17:26:15,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 770 states have (on average 2.07012987012987) internal successors, (1594), 1287 states have internal predecessors, (1594), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-25 17:26:15,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1624 transitions. [2022-11-25 17:26:15,157 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1624 transitions. Word has length 3 [2022-11-25 17:26:15,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:15,158 INFO L495 AbstractCegarLoop]: Abstraction has 1306 states and 1624 transitions. [2022-11-25 17:26:15,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:15,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1624 transitions. [2022-11-25 17:26:15,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 17:26:15,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:15,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:15,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:15,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:15,367 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:26:15,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:15,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1111693489, now seen corresponding path program 1 times [2022-11-25 17:26:15,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:26:15,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400148382] [2022-11-25 17:26:15,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:15,369 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 17:26:15,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:26:15,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:15,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:15,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:26:15,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:15,600 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 17:26:15,608 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 17:26:15,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:15,711 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 17:26:15,736 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:26:15,737 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 17:26:15,781 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 17:26:15,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:26:15,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:26:15,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400148382] [2022-11-25 17:26:15,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400148382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:15,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:15,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:26:15,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255563125] [2022-11-25 17:26:15,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:15,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:26:15,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:26:15,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:26:15,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:26:15,786 INFO L87 Difference]: Start difference. First operand 1306 states and 1624 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:22,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:22,960 INFO L93 Difference]: Finished difference Result 1996 states and 2369 transitions. [2022-11-25 17:26:22,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:26:22,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 17:26:22,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:22,969 INFO L225 Difference]: With dead ends: 1996 [2022-11-25 17:26:22,969 INFO L226 Difference]: Without dead ends: 1996 [2022-11-25 17:26:22,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:26:22,972 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 718 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:22,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1581 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-25 17:26:22,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2022-11-25 17:26:23,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1451. [2022-11-25 17:26:23,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 915 states have (on average 2.0513661202185793) internal successors, (1877), 1432 states have internal predecessors, (1877), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-25 17:26:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 1907 transitions. [2022-11-25 17:26:23,017 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 1907 transitions. Word has length 8 [2022-11-25 17:26:23,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:23,018 INFO L495 AbstractCegarLoop]: Abstraction has 1451 states and 1907 transitions. [2022-11-25 17:26:23,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:23,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 1907 transitions. [2022-11-25 17:26:23,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 17:26:23,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:23,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:23,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:23,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:23,240 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:26:23,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:23,241 INFO L85 PathProgramCache]: Analyzing trace with hash -102759776, now seen corresponding path program 1 times [2022-11-25 17:26:23,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:26:23,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059443284] [2022-11-25 17:26:23,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:23,244 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 17:26:23,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:26:23,245 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:23,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:23,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:26:23,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:23,431 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 17:26:23,459 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 17:26:23,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:26:23,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:26:23,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059443284] [2022-11-25 17:26:23,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059443284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:23,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:23,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:26:23,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760730699] [2022-11-25 17:26:23,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:23,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:26:23,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:26:23,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:26:23,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:26:23,463 INFO L87 Difference]: Start difference. First operand 1451 states and 1907 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:28,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:28,137 INFO L93 Difference]: Finished difference Result 2429 states and 3105 transitions. [2022-11-25 17:26:28,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:26:28,140 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 17:26:28,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:28,149 INFO L225 Difference]: With dead ends: 2429 [2022-11-25 17:26:28,149 INFO L226 Difference]: Without dead ends: 2429 [2022-11-25 17:26:28,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:26:28,156 INFO L413 NwaCegarLoop]: 1012 mSDtfsCounter, 2139 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:28,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2145 Valid, 1969 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-25 17:26:28,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2022-11-25 17:26:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 1406. [2022-11-25 17:26:28,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 915 states have (on average 1.9868852459016393) internal successors, (1818), 1387 states have internal predecessors, (1818), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-25 17:26:28,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 1848 transitions. [2022-11-25 17:26:28,210 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 1848 transitions. Word has length 9 [2022-11-25 17:26:28,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:28,210 INFO L495 AbstractCegarLoop]: Abstraction has 1406 states and 1848 transitions. [2022-11-25 17:26:28,210 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:28,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 1848 transitions. [2022-11-25 17:26:28,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 17:26:28,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:28,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:28,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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)] Ended with exit code 0 [2022-11-25 17:26:28,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:28,425 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:26:28,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:28,425 INFO L85 PathProgramCache]: Analyzing trace with hash -102759775, now seen corresponding path program 1 times [2022-11-25 17:26:28,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:26:28,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949813315] [2022-11-25 17:26:28,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:28,426 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 17:26:28,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:26:28,427 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:28,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:28,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:26:28,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:28,637 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 17:26:28,698 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 17:26:28,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:26:28,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:26:28,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949813315] [2022-11-25 17:26:28,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949813315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:28,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:28,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:26:28,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019953863] [2022-11-25 17:26:28,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:28,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:26:28,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:26:28,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:26:28,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:26:28,701 INFO L87 Difference]: Start difference. First operand 1406 states and 1848 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:33,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:33,956 INFO L93 Difference]: Finished difference Result 2045 states and 2683 transitions. [2022-11-25 17:26:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:26:33,957 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 17:26:33,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:33,963 INFO L225 Difference]: With dead ends: 2045 [2022-11-25 17:26:33,963 INFO L226 Difference]: Without dead ends: 2045 [2022-11-25 17:26:33,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:26:33,965 INFO L413 NwaCegarLoop]: 1191 mSDtfsCounter, 1375 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:33,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1378 Valid, 2090 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-25 17:26:33,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2022-11-25 17:26:33,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1396. [2022-11-25 17:26:33,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 915 states have (on average 1.960655737704918) internal successors, (1794), 1377 states have internal predecessors, (1794), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-25 17:26:34,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1824 transitions. [2022-11-25 17:26:34,003 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1824 transitions. Word has length 9 [2022-11-25 17:26:34,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:34,004 INFO L495 AbstractCegarLoop]: Abstraction has 1396 states and 1824 transitions. [2022-11-25 17:26:34,004 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:34,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1824 transitions. [2022-11-25 17:26:34,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 17:26:34,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:34,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:34,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:34,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:34,232 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr516ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:26:34,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:34,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1033799265, now seen corresponding path program 1 times [2022-11-25 17:26:34,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:26:34,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946267580] [2022-11-25 17:26:34,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:34,233 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 17:26:34,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:26:34,234 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:34,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 (7)] Waiting until timeout for monitored process [2022-11-25 17:26:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:34,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:26:34,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:34,529 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 17:26:34,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:26:34,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:26:34,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946267580] [2022-11-25 17:26:34,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946267580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:34,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:34,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:26:34,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522836652] [2022-11-25 17:26:34,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:34,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:26:34,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:26:34,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:26:34,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:26:34,532 INFO L87 Difference]: Start difference. First operand 1396 states and 1824 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:35,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:35,532 INFO L93 Difference]: Finished difference Result 1872 states and 2391 transitions. [2022-11-25 17:26:35,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:26:35,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-25 17:26:35,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:35,541 INFO L225 Difference]: With dead ends: 1872 [2022-11-25 17:26:35,541 INFO L226 Difference]: Without dead ends: 1872 [2022-11-25 17:26:35,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:26:35,542 INFO L413 NwaCegarLoop]: 1154 mSDtfsCounter, 546 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 3116 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:35,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 3116 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 17:26:35,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2022-11-25 17:26:35,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1647. [2022-11-25 17:26:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1166 states have (on average 1.9742710120068612) internal successors, (2302), 1628 states have internal predecessors, (2302), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-25 17:26:35,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 2332 transitions. [2022-11-25 17:26:35,586 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 2332 transitions. Word has length 11 [2022-11-25 17:26:35,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:35,586 INFO L495 AbstractCegarLoop]: Abstraction has 1647 states and 2332 transitions. [2022-11-25 17:26:35,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:35,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 2332 transitions. [2022-11-25 17:26:35,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 17:26:35,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:35,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:35,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:35,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:35,819 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:26:35,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:35,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1297880888, now seen corresponding path program 1 times [2022-11-25 17:26:35,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:26:35,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986328337] [2022-11-25 17:26:35,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:35,821 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 17:26:35,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:26:35,822 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:35,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:36,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:26:36,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:36,081 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:26:36,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:26:36,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:26:36,092 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 30 treesize of output 39 [2022-11-25 17:26:36,164 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:26:36,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2022-11-25 17:26:36,189 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 17:26:36,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:26:36,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:26:36,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986328337] [2022-11-25 17:26:36,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986328337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:36,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:36,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:26:36,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848279746] [2022-11-25 17:26:36,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:36,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:26:36,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:26:36,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:26:36,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:26:36,197 INFO L87 Difference]: Start difference. First operand 1647 states and 2332 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:38,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:38,464 INFO L93 Difference]: Finished difference Result 1653 states and 2035 transitions. [2022-11-25 17:26:38,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:26:38,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-25 17:26:38,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:38,472 INFO L225 Difference]: With dead ends: 1653 [2022-11-25 17:26:38,472 INFO L226 Difference]: Without dead ends: 1653 [2022-11-25 17:26:38,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:26:38,473 INFO L413 NwaCegarLoop]: 1038 mSDtfsCounter, 358 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2971 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:38,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 2971 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 17:26:38,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2022-11-25 17:26:38,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1289. [2022-11-25 17:26:38,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 810 states have (on average 1.9506172839506173) internal successors, (1580), 1272 states have internal predecessors, (1580), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-25 17:26:38,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1606 transitions. [2022-11-25 17:26:38,504 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1606 transitions. Word has length 14 [2022-11-25 17:26:38,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:38,504 INFO L495 AbstractCegarLoop]: Abstraction has 1289 states and 1606 transitions. [2022-11-25 17:26:38,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:38,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1606 transitions. [2022-11-25 17:26:38,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 17:26:38,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:38,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:38,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:38,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:38,721 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:26:38,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:38,721 INFO L85 PathProgramCache]: Analyzing trace with hash 769788685, now seen corresponding path program 1 times [2022-11-25 17:26:38,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:26:38,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833831307] [2022-11-25 17:26:38,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:38,722 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 17:26:38,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:26:38,725 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:38,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:38,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:26:38,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:38,985 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 17:26:38,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:26:38,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:26:38,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833831307] [2022-11-25 17:26:38,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833831307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:38,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:38,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:26:38,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966377326] [2022-11-25 17:26:38,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:38,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:38,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:26:38,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:38,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:38,989 INFO L87 Difference]: Start difference. First operand 1289 states and 1606 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:39,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:39,029 INFO L93 Difference]: Finished difference Result 1229 states and 1520 transitions. [2022-11-25 17:26:39,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:39,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-25 17:26:39,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:39,034 INFO L225 Difference]: With dead ends: 1229 [2022-11-25 17:26:39,034 INFO L226 Difference]: Without dead ends: 1229 [2022-11-25 17:26:39,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:39,036 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 957 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:39,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 1094 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:26:39,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-11-25 17:26:39,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1229. [2022-11-25 17:26:39,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 774 states have (on average 1.930232558139535) internal successors, (1494), 1212 states have internal predecessors, (1494), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-25 17:26:39,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1520 transitions. [2022-11-25 17:26:39,068 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1520 transitions. Word has length 19 [2022-11-25 17:26:39,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:39,069 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 1520 transitions. [2022-11-25 17:26:39,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:39,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1520 transitions. [2022-11-25 17:26:39,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-25 17:26:39,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:39,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:39,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:39,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:39,293 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:26:39,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:39,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1032548102, now seen corresponding path program 1 times [2022-11-25 17:26:39,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:26:39,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723613649] [2022-11-25 17:26:39,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:39,295 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 17:26:39,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:26:39,296 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:39,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:39,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:26:39,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:39,567 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 17:26:39,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:26:39,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:26:39,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723613649] [2022-11-25 17:26:39,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723613649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:39,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:39,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:26:39,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380079065] [2022-11-25 17:26:39,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:39,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:26:39,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:26:39,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:26:39,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:26:39,571 INFO L87 Difference]: Start difference. First operand 1229 states and 1520 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:39,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:39,656 INFO L93 Difference]: Finished difference Result 1201 states and 1464 transitions. [2022-11-25 17:26:39,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:26:39,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-25 17:26:39,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:39,660 INFO L225 Difference]: With dead ends: 1201 [2022-11-25 17:26:39,660 INFO L226 Difference]: Without dead ends: 1201 [2022-11-25 17:26:39,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:26:39,661 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 938 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:39,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 2024 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:26:39,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2022-11-25 17:26:39,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1199. [2022-11-25 17:26:39,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 758 states have (on average 1.8944591029023747) internal successors, (1436), 1182 states have internal predecessors, (1436), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-25 17:26:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1462 transitions. [2022-11-25 17:26:39,690 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1462 transitions. Word has length 21 [2022-11-25 17:26:39,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:39,690 INFO L495 AbstractCegarLoop]: Abstraction has 1199 states and 1462 transitions. [2022-11-25 17:26:39,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:39,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1462 transitions. [2022-11-25 17:26:39,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-25 17:26:39,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:39,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:39,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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)] Ended with exit code 0 [2022-11-25 17:26:39,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:39,907 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:26:39,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:39,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308372, now seen corresponding path program 1 times [2022-11-25 17:26:39,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:26:39,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702362391] [2022-11-25 17:26:39,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:39,908 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 17:26:39,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:26:39,909 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:39,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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)] Waiting until timeout for monitored process [2022-11-25 17:26:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:40,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:26:40,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:40,131 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 17:26:40,258 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 17:26:40,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:26:40,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:26:40,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702362391] [2022-11-25 17:26:40,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702362391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:40,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:40,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:26:40,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123015271] [2022-11-25 17:26:40,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:40,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:26:40,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:26:40,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:26:40,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:26:40,262 INFO L87 Difference]: Start difference. First operand 1199 states and 1462 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:45,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:45,482 INFO L93 Difference]: Finished difference Result 2183 states and 2663 transitions. [2022-11-25 17:26:45,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:26:45,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-25 17:26:45,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:45,491 INFO L225 Difference]: With dead ends: 2183 [2022-11-25 17:26:45,492 INFO L226 Difference]: Without dead ends: 2183 [2022-11-25 17:26:45,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:26:45,493 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 2036 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2039 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:45,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2039 Valid, 2017 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-25 17:26:45,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2183 states. [2022-11-25 17:26:45,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2183 to 1195. [2022-11-25 17:26:45,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 758 states have (on average 1.883905013192612) internal successors, (1428), 1178 states have internal predecessors, (1428), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-25 17:26:45,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1454 transitions. [2022-11-25 17:26:45,523 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1454 transitions. Word has length 35 [2022-11-25 17:26:45,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:45,524 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1454 transitions. [2022-11-25 17:26:45,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:45,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1454 transitions. [2022-11-25 17:26:45,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-25 17:26:45,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:45,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:45,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:45,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:45,740 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:26:45,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:45,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308373, now seen corresponding path program 1 times [2022-11-25 17:26:45,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:26:45,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254646089] [2022-11-25 17:26:45,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:45,742 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 17:26:45,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:26:45,743 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:45,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:46,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 17:26:46,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:46,027 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 17:26:46,301 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 17:26:46,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:26:46,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:26:46,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254646089] [2022-11-25 17:26:46,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254646089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:46,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:46,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:26:46,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082662112] [2022-11-25 17:26:46,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:46,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:26:46,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:26:46,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:26:46,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:26:46,304 INFO L87 Difference]: Start difference. First operand 1195 states and 1454 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:52,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:52,357 INFO L93 Difference]: Finished difference Result 1805 states and 2217 transitions. [2022-11-25 17:26:52,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:26:52,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-25 17:26:52,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:52,365 INFO L225 Difference]: With dead ends: 1805 [2022-11-25 17:26:52,366 INFO L226 Difference]: Without dead ends: 1805 [2022-11-25 17:26:52,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:26:52,367 INFO L413 NwaCegarLoop]: 1229 mSDtfsCounter, 1783 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:52,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1783 Valid, 2579 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-25 17:26:52,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2022-11-25 17:26:52,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1191. [2022-11-25 17:26:52,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 758 states have (on average 1.8733509234828496) internal successors, (1420), 1174 states have internal predecessors, (1420), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-25 17:26:52,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1446 transitions. [2022-11-25 17:26:52,395 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1446 transitions. Word has length 35 [2022-11-25 17:26:52,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:52,396 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 1446 transitions. [2022-11-25 17:26:52,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:52,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1446 transitions. [2022-11-25 17:26:52,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 17:26:52,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:52,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:26:52,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:52,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:52,626 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:26:52,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:52,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2063932984, now seen corresponding path program 1 times [2022-11-25 17:26:52,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:26:52,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592011945] [2022-11-25 17:26:52,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:52,628 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 17:26:52,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:26:52,630 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:52,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:52,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:26:52,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:53,056 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 17:26:53,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:26:53,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:26:53,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592011945] [2022-11-25 17:26:53,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592011945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:53,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:53,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:26:53,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057297530] [2022-11-25 17:26:53,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:53,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:26:53,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:26:53,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:26:53,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:26:53,060 INFO L87 Difference]: Start difference. First operand 1191 states and 1446 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:53,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:53,151 INFO L93 Difference]: Finished difference Result 1179 states and 1426 transitions. [2022-11-25 17:26:53,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:26:53,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-25 17:26:53,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:53,159 INFO L225 Difference]: With dead ends: 1179 [2022-11-25 17:26:53,160 INFO L226 Difference]: Without dead ends: 1179 [2022-11-25 17:26:53,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:26:53,161 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 907 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:53,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 2002 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:26:53,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-11-25 17:26:53,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2022-11-25 17:26:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 746 states have (on average 1.876675603217158) internal successors, (1400), 1162 states have internal predecessors, (1400), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-25 17:26:53,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1426 transitions. [2022-11-25 17:26:53,186 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1426 transitions. Word has length 54 [2022-11-25 17:26:53,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:53,187 INFO L495 AbstractCegarLoop]: Abstraction has 1179 states and 1426 transitions. [2022-11-25 17:26:53,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:53,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1426 transitions. [2022-11-25 17:26:53,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 17:26:53,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:53,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:26:53,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:53,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:53,408 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:26:53,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:53,408 INFO L85 PathProgramCache]: Analyzing trace with hash -203146628, now seen corresponding path program 1 times [2022-11-25 17:26:53,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:26:53,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106705729] [2022-11-25 17:26:53,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:53,409 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 17:26:53,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:26:53,412 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:26:53,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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)] Waiting until timeout for monitored process [2022-11-25 17:26:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:53,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 17:26:53,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:53,984 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 17:26:53,984 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 24 [2022-11-25 17:26:54,071 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 17:26:54,071 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 18 treesize of output 28 [2022-11-25 17:26:54,630 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 17:26:54,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:26:54,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:26:54,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106705729] [2022-11-25 17:26:54,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106705729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:54,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:54,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:26:54,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457397683] [2022-11-25 17:26:54,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:54,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:26:54,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:26:54,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:26:54,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:26:54,633 INFO L87 Difference]: Start difference. First operand 1179 states and 1426 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:59,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:59,770 INFO L93 Difference]: Finished difference Result 2639 states and 3164 transitions. [2022-11-25 17:26:59,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:26:59,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-25 17:26:59,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:59,779 INFO L225 Difference]: With dead ends: 2639 [2022-11-25 17:26:59,779 INFO L226 Difference]: Without dead ends: 2639 [2022-11-25 17:26:59,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:26:59,780 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 3028 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3028 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:59,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3028 Valid, 1820 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-25 17:26:59,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2022-11-25 17:26:59,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 1615. [2022-11-25 17:26:59,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1167 states have (on average 1.8723221936589547) internal successors, (2185), 1586 states have internal predecessors, (2185), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-25 17:26:59,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2235 transitions. [2022-11-25 17:26:59,828 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2235 transitions. Word has length 62 [2022-11-25 17:26:59,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:59,829 INFO L495 AbstractCegarLoop]: Abstraction has 1615 states and 2235 transitions. [2022-11-25 17:26:59,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:59,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2235 transitions. [2022-11-25 17:26:59,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 17:26:59,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:59,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:26:59,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:27:00,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:00,051 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:27:00,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:00,051 INFO L85 PathProgramCache]: Analyzing trace with hash -203146627, now seen corresponding path program 1 times [2022-11-25 17:27:00,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:27:00,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196208535] [2022-11-25 17:27:00,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:00,052 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 17:27:00,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:27:00,054 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:00,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:00,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 17:27:00,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:27:00,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:00,628 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 17:27:00,745 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:27:00,746 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 17:27:01,660 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 17:27:01,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:27:01,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:27:01,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196208535] [2022-11-25 17:27:01,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196208535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:01,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:01,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:27:01,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663719829] [2022-11-25 17:27:01,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:01,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:27:01,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:27:01,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:27:01,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:27:01,663 INFO L87 Difference]: Start difference. First operand 1615 states and 2235 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:07,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:27:07,095 INFO L93 Difference]: Finished difference Result 1621 states and 2242 transitions. [2022-11-25 17:27:07,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:27:07,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-25 17:27:07,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:27:07,102 INFO L225 Difference]: With dead ends: 1621 [2022-11-25 17:27:07,103 INFO L226 Difference]: Without dead ends: 1621 [2022-11-25 17:27:07,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:27:07,104 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 111 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 1635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:27:07,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 2283 Invalid, 1635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-25 17:27:07,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2022-11-25 17:27:07,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1620. [2022-11-25 17:27:07,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1171 states have (on average 1.8693424423569598) internal successors, (2189), 1590 states have internal predecessors, (2189), 26 states have call successors, (26), 9 states have call predecessors, (26), 7 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-25 17:27:07,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2241 transitions. [2022-11-25 17:27:07,135 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2241 transitions. Word has length 62 [2022-11-25 17:27:07,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:27:07,135 INFO L495 AbstractCegarLoop]: Abstraction has 1620 states and 2241 transitions. [2022-11-25 17:27:07,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:07,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2241 transitions. [2022-11-25 17:27:07,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-25 17:27:07,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:27:07,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:27:07,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:07,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:07,356 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:27:07,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:07,356 INFO L85 PathProgramCache]: Analyzing trace with hash 389814229, now seen corresponding path program 1 times [2022-11-25 17:27:07,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:27:07,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87153245] [2022-11-25 17:27:07,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:07,357 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 17:27:07,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:27:07,358 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:07,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:07,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:27:07,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:27:07,816 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 17:27:07,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:27:07,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:27:07,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87153245] [2022-11-25 17:27:07,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87153245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:07,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:07,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:27:07,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646436161] [2022-11-25 17:27:07,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:07,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:27:07,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:27:07,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:27:07,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:27:07,819 INFO L87 Difference]: Start difference. First operand 1620 states and 2241 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:07,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:27:07,973 INFO L93 Difference]: Finished difference Result 1646 states and 2268 transitions. [2022-11-25 17:27:07,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:27:07,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-25 17:27:07,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:27:07,987 INFO L225 Difference]: With dead ends: 1646 [2022-11-25 17:27:07,987 INFO L226 Difference]: Without dead ends: 1646 [2022-11-25 17:27:07,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:27:07,990 INFO L413 NwaCegarLoop]: 973 mSDtfsCounter, 19 mSDsluCounter, 3882 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4855 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:27:07,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4855 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:27:07,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2022-11-25 17:27:08,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1644. [2022-11-25 17:27:08,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1644 states, 1189 states have (on average 1.8603868797308662) internal successors, (2212), 1610 states have internal predecessors, (2212), 28 states have call successors, (28), 13 states have call predecessors, (28), 11 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-25 17:27:08,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2268 transitions. [2022-11-25 17:27:08,036 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2268 transitions. Word has length 68 [2022-11-25 17:27:08,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:27:08,037 INFO L495 AbstractCegarLoop]: Abstraction has 1644 states and 2268 transitions. [2022-11-25 17:27:08,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:08,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2268 transitions. [2022-11-25 17:27:08,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-25 17:27:08,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:27:08,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:27:08,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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)] Ended with exit code 0 [2022-11-25 17:27:08,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:08,256 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:27:08,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:08,256 INFO L85 PathProgramCache]: Analyzing trace with hash 341176989, now seen corresponding path program 1 times [2022-11-25 17:27:08,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:27:08,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425993155] [2022-11-25 17:27:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:08,257 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 17:27:08,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:27:08,259 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:08,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:08,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:27:08,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:27:08,862 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 17:27:08,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:27:08,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:27:08,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425993155] [2022-11-25 17:27:08,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425993155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:08,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:08,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:27:08,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764721472] [2022-11-25 17:27:08,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:08,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:27:08,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:27:08,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:27:08,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:27:08,865 INFO L87 Difference]: Start difference. First operand 1644 states and 2268 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 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 17:27:09,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:27:09,119 INFO L93 Difference]: Finished difference Result 1656 states and 2282 transitions. [2022-11-25 17:27:09,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:27:09,120 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 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 68 [2022-11-25 17:27:09,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:27:09,126 INFO L225 Difference]: With dead ends: 1656 [2022-11-25 17:27:09,127 INFO L226 Difference]: Without dead ends: 1656 [2022-11-25 17:27:09,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:27:09,128 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 20 mSDsluCounter, 2818 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 3777 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:27:09,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 3777 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:27:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2022-11-25 17:27:09,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1647. [2022-11-25 17:27:09,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1191 states have (on average 1.858942065491184) internal successors, (2214), 1612 states have internal predecessors, (2214), 28 states have call successors, (28), 13 states have call predecessors, (28), 12 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-25 17:27:09,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 2271 transitions. [2022-11-25 17:27:09,158 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 2271 transitions. Word has length 68 [2022-11-25 17:27:09,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:27:09,158 INFO L495 AbstractCegarLoop]: Abstraction has 1647 states and 2271 transitions. [2022-11-25 17:27:09,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 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 17:27:09,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 2271 transitions. [2022-11-25 17:27:09,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 17:27:09,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:27:09,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:27:09,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:09,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:09,376 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:27:09,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:09,376 INFO L85 PathProgramCache]: Analyzing trace with hash -233122725, now seen corresponding path program 1 times [2022-11-25 17:27:09,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:27:09,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859161886] [2022-11-25 17:27:09,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:09,377 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 17:27:09,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:27:09,379 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:09,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:09,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:27:09,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:27:09,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 17:27:10,124 WARN L859 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |alt_malloc_#res.base| (_ bv1 1)))) is different from true [2022-11-25 17:27:10,178 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 17:27:10,178 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 17:27:10,193 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 17:27:10,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:27:10,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:27:10,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859161886] [2022-11-25 17:27:10,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859161886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:10,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:10,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:27:10,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200617231] [2022-11-25 17:27:10,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:10,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:27:10,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:27:10,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:27:10,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2022-11-25 17:27:10,196 INFO L87 Difference]: Start difference. First operand 1647 states and 2271 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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 17:27:15,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:27:15,975 INFO L93 Difference]: Finished difference Result 2769 states and 3749 transitions. [2022-11-25 17:27:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:27:15,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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 73 [2022-11-25 17:27:15,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:27:15,984 INFO L225 Difference]: With dead ends: 2769 [2022-11-25 17:27:15,984 INFO L226 Difference]: Without dead ends: 2769 [2022-11-25 17:27:15,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 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 17:27:15,985 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 1428 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 4034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1894 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:27:15,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1434 Valid, 2219 Invalid, 4034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2121 Invalid, 0 Unknown, 1894 Unchecked, 5.6s Time] [2022-11-25 17:27:15,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-11-25 17:27:16,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1646. [2022-11-25 17:27:16,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1646 states, 1191 states have (on average 1.8572628043660788) internal successors, (2212), 1611 states have internal predecessors, (2212), 28 states have call successors, (28), 13 states have call predecessors, (28), 12 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-25 17:27:16,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2269 transitions. [2022-11-25 17:27:16,035 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2269 transitions. Word has length 73 [2022-11-25 17:27:16,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:27:16,035 INFO L495 AbstractCegarLoop]: Abstraction has 1646 states and 2269 transitions. [2022-11-25 17:27:16,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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 17:27:16,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2269 transitions. [2022-11-25 17:27:16,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 17:27:16,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:27:16,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:27:16,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:16,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:16,259 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:27:16,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:16,259 INFO L85 PathProgramCache]: Analyzing trace with hash -233122724, now seen corresponding path program 1 times [2022-11-25 17:27:16,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:27:16,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956651291] [2022-11-25 17:27:16,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:16,260 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 17:27:16,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:27:16,261 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:16,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:16,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 17:27:16,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:27:16,773 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 17:27:16,781 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 17:27:17,479 WARN L859 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_1107 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |alt_malloc_#res.base| v_ArrVal_1107))) (= (_ bv0 1) (select |c_old(#valid)| |alt_malloc_#res.base|)))) is different from true [2022-11-25 17:27:17,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:17,509 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 17:27:17,524 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:27:17,528 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 17:27:17,555 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 17:27:17,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:27:17,556 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:27:17,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956651291] [2022-11-25 17:27:17,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956651291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:17,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:17,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:27:17,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772422230] [2022-11-25 17:27:17,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:17,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:27:17,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:27:17,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:27:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2022-11-25 17:27:17,558 INFO L87 Difference]: Start difference. First operand 1646 states and 2269 transitions. Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 17:27:26,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:27:26,736 INFO L93 Difference]: Finished difference Result 2840 states and 3874 transitions. [2022-11-25 17:27:26,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:27:26,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 73 [2022-11-25 17:27:26,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:27:26,744 INFO L225 Difference]: With dead ends: 2840 [2022-11-25 17:27:26,744 INFO L226 Difference]: Without dead ends: 2840 [2022-11-25 17:27:26,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2022-11-25 17:27:26,745 INFO L413 NwaCegarLoop]: 1040 mSDtfsCounter, 2151 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 3092 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2157 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 5020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1900 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:27:26,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2157 Valid, 2397 Invalid, 5020 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 3092 Invalid, 0 Unknown, 1900 Unchecked, 9.0s Time] [2022-11-25 17:27:26,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2022-11-25 17:27:26,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 1642. [2022-11-25 17:27:26,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1195 states have (on average 1.8410041841004183) internal successors, (2200), 1607 states have internal predecessors, (2200), 28 states have call successors, (28), 13 states have call predecessors, (28), 12 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-25 17:27:26,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2257 transitions. [2022-11-25 17:27:26,784 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2257 transitions. Word has length 73 [2022-11-25 17:27:26,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:27:26,785 INFO L495 AbstractCegarLoop]: Abstraction has 1642 states and 2257 transitions. [2022-11-25 17:27:26,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 17:27:26,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2257 transitions. [2022-11-25 17:27:26,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-25 17:27:26,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:27:26,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:27:26,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:27,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:27,004 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:27:27,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:27,005 INFO L85 PathProgramCache]: Analyzing trace with hash -159183299, now seen corresponding path program 1 times [2022-11-25 17:27:27,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:27:27,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801028759] [2022-11-25 17:27:27,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:27,006 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 17:27:27,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:27:27,007 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:27,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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)] Waiting until timeout for monitored process [2022-11-25 17:27:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:27,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 17:27:27,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:27:27,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 17:27:27,474 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 17:27:27,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-25 17:27:27,584 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 17:27:27,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:27:27,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:27:27,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801028759] [2022-11-25 17:27:27,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801028759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:27,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:27,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:27:27,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954583978] [2022-11-25 17:27:27,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:27,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:27:27,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:27:27,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:27:27,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:27:27,587 INFO L87 Difference]: Start difference. First operand 1642 states and 2257 transitions. Second operand has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:27:33,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:27:33,381 INFO L93 Difference]: Finished difference Result 1657 states and 2273 transitions. [2022-11-25 17:27:33,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:27:33,382 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2022-11-25 17:27:33,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:27:33,386 INFO L225 Difference]: With dead ends: 1657 [2022-11-25 17:27:33,386 INFO L226 Difference]: Without dead ends: 1657 [2022-11-25 17:27:33,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:27:33,387 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 23 mSDsluCounter, 3109 mSDsCounter, 0 mSdLazyCounter, 2696 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4068 SdHoareTripleChecker+Invalid, 2698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:27:33,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 4068 Invalid, 2698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2696 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-25 17:27:33,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2022-11-25 17:27:33,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1656. [2022-11-25 17:27:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1207 states have (on average 1.835956917978459) internal successors, (2216), 1619 states have internal predecessors, (2216), 28 states have call successors, (28), 15 states have call predecessors, (28), 14 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-25 17:27:33,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2273 transitions. [2022-11-25 17:27:33,437 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2273 transitions. Word has length 80 [2022-11-25 17:27:33,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:27:33,438 INFO L495 AbstractCegarLoop]: Abstraction has 1656 states and 2273 transitions. [2022-11-25 17:27:33,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:27:33,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2273 transitions. [2022-11-25 17:27:33,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-25 17:27:33,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:27:33,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:27:33,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:27:33,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:33,654 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:27:33,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:33,655 INFO L85 PathProgramCache]: Analyzing trace with hash -639714905, now seen corresponding path program 1 times [2022-11-25 17:27:33,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:27:33,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646338546] [2022-11-25 17:27:33,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:33,656 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 17:27:33,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:27:33,657 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:33,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:34,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-25 17:27:34,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:27:34,104 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 17:27:34,150 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 17:27:34,159 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 17:27:34,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-25 17:27:34,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-25 17:27:34,350 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 17:27:34,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:27:34,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:27:34,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646338546] [2022-11-25 17:27:34,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646338546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:34,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:34,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:27:34,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195336046] [2022-11-25 17:27:34,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:34,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:27:34,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:27:34,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:27:34,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:27:34,354 INFO L87 Difference]: Start difference. First operand 1656 states and 2273 transitions. Second operand has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:27:42,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:27:42,442 INFO L93 Difference]: Finished difference Result 1656 states and 2271 transitions. [2022-11-25 17:27:42,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:27:42,443 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 81 [2022-11-25 17:27:42,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:27:42,446 INFO L225 Difference]: With dead ends: 1656 [2022-11-25 17:27:42,446 INFO L226 Difference]: Without dead ends: 1656 [2022-11-25 17:27:42,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:27:42,447 INFO L413 NwaCegarLoop]: 954 mSDtfsCounter, 19 mSDsluCounter, 3910 mSDsCounter, 0 mSdLazyCounter, 2866 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4864 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:27:42,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4864 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2866 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-25 17:27:42,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2022-11-25 17:27:42,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1656. [2022-11-25 17:27:42,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1207 states have (on average 1.8342999171499585) internal successors, (2214), 1619 states have internal predecessors, (2214), 28 states have call successors, (28), 15 states have call predecessors, (28), 14 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2022-11-25 17:27:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2271 transitions. [2022-11-25 17:27:42,476 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2271 transitions. Word has length 81 [2022-11-25 17:27:42,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:27:42,477 INFO L495 AbstractCegarLoop]: Abstraction has 1656 states and 2271 transitions. [2022-11-25 17:27:42,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 17:27:42,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2271 transitions. [2022-11-25 17:27:42,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-25 17:27:42,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:27:42,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:27:42,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:42,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:42,696 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:27:42,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:42,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1094788593, now seen corresponding path program 1 times [2022-11-25 17:27:42,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:27:42,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585935764] [2022-11-25 17:27:42,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:42,697 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 17:27:42,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:27:42,698 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:42,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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)] Waiting until timeout for monitored process [2022-11-25 17:27:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:43,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:27:43,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:27:43,172 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 17:27:43,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:27:43,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:27:43,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585935764] [2022-11-25 17:27:43,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585935764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:43,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:43,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:27:43,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566114221] [2022-11-25 17:27:43,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:43,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:27:43,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:27:43,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:27:43,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:27:43,176 INFO L87 Difference]: Start difference. First operand 1656 states and 2271 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 17:27:43,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:27:43,284 INFO L93 Difference]: Finished difference Result 1672 states and 2289 transitions. [2022-11-25 17:27:43,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:27:43,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 88 [2022-11-25 17:27:43,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:27:43,289 INFO L225 Difference]: With dead ends: 1672 [2022-11-25 17:27:43,290 INFO L226 Difference]: Without dead ends: 1666 [2022-11-25 17:27:43,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:27:43,291 INFO L413 NwaCegarLoop]: 962 mSDtfsCounter, 13 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:27:43,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2878 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:27:43,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2022-11-25 17:27:43,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1666. [2022-11-25 17:27:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1215 states have (on average 1.8304526748971193) internal successors, (2224), 1629 states have internal predecessors, (2224), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-25 17:27:43,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2283 transitions. [2022-11-25 17:27:43,322 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2283 transitions. Word has length 88 [2022-11-25 17:27:43,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:27:43,323 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 2283 transitions. [2022-11-25 17:27:43,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 17:27:43,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2283 transitions. [2022-11-25 17:27:43,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-25 17:27:43,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:27:43,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:27:43,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:27:43,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:43,542 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:27:43,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:43,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1402763991, now seen corresponding path program 1 times [2022-11-25 17:27:43,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:27:43,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445870004] [2022-11-25 17:27:43,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:43,544 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 17:27:43,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:27:43,545 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:43,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:44,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:27:44,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:27:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:27:44,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:27:44,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:27:44,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:27:44,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445870004] [2022-11-25 17:27:44,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445870004] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:27:44,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:27:44,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-25 17:27:44,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938830317] [2022-11-25 17:27:44,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:27:44,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:27:44,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:27:44,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:27:44,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:27:44,346 INFO L87 Difference]: Start difference. First operand 1666 states and 2283 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 17:27:44,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:27:44,698 INFO L93 Difference]: Finished difference Result 1692 states and 2313 transitions. [2022-11-25 17:27:44,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 17:27:44,699 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 89 [2022-11-25 17:27:44,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:27:44,704 INFO L225 Difference]: With dead ends: 1692 [2022-11-25 17:27:44,704 INFO L226 Difference]: Without dead ends: 1680 [2022-11-25 17:27:44,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-25 17:27:44,706 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 37 mSDsluCounter, 3839 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 4804 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:27:44,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 4804 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:27:44,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2022-11-25 17:27:44,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1674. [2022-11-25 17:27:44,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1223 states have (on average 1.8266557645134913) internal successors, (2234), 1637 states have internal predecessors, (2234), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-25 17:27:44,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2293 transitions. [2022-11-25 17:27:44,742 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2293 transitions. Word has length 89 [2022-11-25 17:27:44,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:27:44,742 INFO L495 AbstractCegarLoop]: Abstraction has 1674 states and 2293 transitions. [2022-11-25 17:27:44,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 17:27:44,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2293 transitions. [2022-11-25 17:27:44,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-25 17:27:44,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:27:44,744 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:27:44,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:44,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:44,961 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:27:44,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:44,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1478348943, now seen corresponding path program 2 times [2022-11-25 17:27:44,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:27:44,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019071569] [2022-11-25 17:27:44,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:27:44,962 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 17:27:44,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:27:44,963 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:44,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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)] Waiting until timeout for monitored process [2022-11-25 17:27:45,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:27:45,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:27:45,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:27:45,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:27:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:27:45,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:27:46,437 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:27:46,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:27:46,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019071569] [2022-11-25 17:27:46,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019071569] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:27:46,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:27:46,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-25 17:27:46,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363384139] [2022-11-25 17:27:46,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:27:46,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 17:27:46,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:27:46,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 17:27:46,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:27:46,441 INFO L87 Difference]: Start difference. First operand 1674 states and 2293 transitions. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 17:27:47,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:27:47,664 INFO L93 Difference]: Finished difference Result 1728 states and 2361 transitions. [2022-11-25 17:27:47,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-25 17:27:47,665 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 92 [2022-11-25 17:27:47,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:27:47,669 INFO L225 Difference]: With dead ends: 1728 [2022-11-25 17:27:47,670 INFO L226 Difference]: Without dead ends: 1716 [2022-11-25 17:27:47,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=343, Invalid=649, Unknown=0, NotChecked=0, Total=992 [2022-11-25 17:27:47,671 INFO L413 NwaCegarLoop]: 971 mSDtfsCounter, 52 mSDsluCounter, 8660 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 9631 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:27:47,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 9631 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:27:47,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2022-11-25 17:27:47,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1692. [2022-11-25 17:27:47,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1241 states have (on average 1.8195004029008863) internal successors, (2258), 1655 states have internal predecessors, (2258), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-25 17:27:47,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2317 transitions. [2022-11-25 17:27:47,700 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2317 transitions. Word has length 92 [2022-11-25 17:27:47,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:27:47,703 INFO L495 AbstractCegarLoop]: Abstraction has 1692 states and 2317 transitions. [2022-11-25 17:27:47,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 17:27:47,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2317 transitions. [2022-11-25 17:27:47,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 17:27:47,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:27:47,705 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:27:47,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:27:47,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:47,918 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:27:47,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:47,919 INFO L85 PathProgramCache]: Analyzing trace with hash -2075896399, now seen corresponding path program 3 times [2022-11-25 17:27:47,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:27:47,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297415095] [2022-11-25 17:27:47,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:27:47,920 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 17:27:47,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:27:47,921 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:47,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:49,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-25 17:27:49,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:27:49,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 17:27:49,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:27:49,444 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:27:49,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:27:50,962 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:27:50,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:27:50,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297415095] [2022-11-25 17:27:50,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297415095] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:27:50,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:27:50,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-25 17:27:50,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576606631] [2022-11-25 17:27:50,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:27:50,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-25 17:27:50,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:27:50,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-25 17:27:50,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2022-11-25 17:27:50,966 INFO L87 Difference]: Start difference. First operand 1692 states and 2317 transitions. Second operand has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 17:27:57,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:27:57,389 INFO L93 Difference]: Finished difference Result 1800 states and 2465 transitions. [2022-11-25 17:27:57,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-25 17:27:57,390 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 98 [2022-11-25 17:27:57,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:27:57,398 INFO L225 Difference]: With dead ends: 1800 [2022-11-25 17:27:57,398 INFO L226 Difference]: Without dead ends: 1782 [2022-11-25 17:27:57,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=924, Invalid=1832, Unknown=0, NotChecked=0, Total=2756 [2022-11-25 17:27:57,400 INFO L413 NwaCegarLoop]: 983 mSDtfsCounter, 148 mSDsluCounter, 13639 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 14622 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:27:57,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 14622 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 17:27:57,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2022-11-25 17:27:57,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1728. [2022-11-25 17:27:57,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1277 states have (on average 1.8042286609240408) internal successors, (2304), 1691 states have internal predecessors, (2304), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-25 17:27:57,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2363 transitions. [2022-11-25 17:27:57,442 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2363 transitions. Word has length 98 [2022-11-25 17:27:57,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:27:57,443 INFO L495 AbstractCegarLoop]: Abstraction has 1728 states and 2363 transitions. [2022-11-25 17:27:57,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 17:27:57,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2363 transitions. [2022-11-25 17:27:57,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-25 17:27:57,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:27:57,452 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:27:57,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:57,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:57,679 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:27:57,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:57,679 INFO L85 PathProgramCache]: Analyzing trace with hash -493120975, now seen corresponding path program 4 times [2022-11-25 17:27:57,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:27:57,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141125751] [2022-11-25 17:27:57,680 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:27:57,680 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 17:27:57,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:27:57,683 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:27:57,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 (26)] Waiting until timeout for monitored process [2022-11-25 17:27:58,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:27:58,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:27:58,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-25 17:27:58,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:27:59,409 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:27:59,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:28:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:28:02,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:28:02,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141125751] [2022-11-25 17:28:02,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141125751] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:28:02,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:28:02,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2022-11-25 17:28:02,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539481082] [2022-11-25 17:28:02,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:28:02,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-25 17:28:02,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:28:02,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-25 17:28:02,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=1927, Unknown=0, NotChecked=0, Total=2652 [2022-11-25 17:28:02,709 INFO L87 Difference]: Start difference. First operand 1728 states and 2363 transitions. Second operand has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 17:28:19,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:28:19,760 INFO L93 Difference]: Finished difference Result 1934 states and 2633 transitions. [2022-11-25 17:28:19,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-25 17:28:19,761 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 110 [2022-11-25 17:28:19,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:28:19,766 INFO L225 Difference]: With dead ends: 1934 [2022-11-25 17:28:19,767 INFO L226 Difference]: Without dead ends: 1922 [2022-11-25 17:28:19,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=4121, Invalid=9921, Unknown=0, NotChecked=0, Total=14042 [2022-11-25 17:28:19,771 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 178 mSDsluCounter, 26849 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 27854 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:28:19,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 27854 Invalid, 2542 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-25 17:28:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2022-11-25 17:28:19,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1796. [2022-11-25 17:28:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1796 states, 1345 states have (on average 1.7814126394052046) internal successors, (2396), 1759 states have internal predecessors, (2396), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-25 17:28:19,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2455 transitions. [2022-11-25 17:28:19,801 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2455 transitions. Word has length 110 [2022-11-25 17:28:19,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:28:19,802 INFO L495 AbstractCegarLoop]: Abstraction has 1796 states and 2455 transitions. [2022-11-25 17:28:19,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 17:28:19,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2455 transitions. [2022-11-25 17:28:19,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-25 17:28:19,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:28:19,806 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:28:19,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 (26)] Forceful destruction successful, exit code 0 [2022-11-25 17:28:20,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:28:20,025 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:28:20,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:28:20,026 INFO L85 PathProgramCache]: Analyzing trace with hash 495144561, now seen corresponding path program 5 times [2022-11-25 17:28:20,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:28:20,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405555110] [2022-11-25 17:28:20,027 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:28:20,027 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 17:28:20,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:28:20,029 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:28:20,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:28:21,782 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-25 17:28:21,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:28:21,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-25 17:28:21,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:28:21,845 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 17:28:22,115 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 17:28:22,116 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 17:28:22,162 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 13 treesize of output 9 [2022-11-25 17:28:22,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-25 17:28:25,659 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:28:25,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:28:25,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-25 17:28:25,787 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-25 17:28:25,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:28:28,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:28:28,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405555110] [2022-11-25 17:28:28,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405555110] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:28:28,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1818598387] [2022-11-25 17:28:28,375 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:28:28,375 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:28:28,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:28:28,378 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:28:28,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-25 17:29:47,627 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-25 17:29:47,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:29:47,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-25 17:29:47,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:29:47,917 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 17:29:48,202 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 17:29:48,203 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 17:29:48,230 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 13 treesize of output 9 [2022-11-25 17:29:48,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-25 17:29:51,726 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:29:51,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:29:51,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-25 17:29:51,816 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-25 17:29:51,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:29:52,281 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3142 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3142) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (_ bv0 1))) is different from false [2022-11-25 17:29:52,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1818598387] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:29:52,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:29:52,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2022-11-25 17:29:52,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744339752] [2022-11-25 17:29:52,284 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:29:52,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 17:29:52,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:29:52,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 17:29:52,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=217, Unknown=16, NotChecked=30, Total=306 [2022-11-25 17:29:52,286 INFO L87 Difference]: Start difference. First operand 1796 states and 2455 transitions. Second operand has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:30:11,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:30:11,537 INFO L93 Difference]: Finished difference Result 2266 states and 3051 transitions. [2022-11-25 17:30:11,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 17:30:11,537 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 132 [2022-11-25 17:30:11,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:30:11,542 INFO L225 Difference]: With dead ends: 2266 [2022-11-25 17:30:11,542 INFO L226 Difference]: Without dead ends: 2266 [2022-11-25 17:30:11,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 166 SyntacticMatches, 89 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=113, Invalid=566, Unknown=27, NotChecked=50, Total=756 [2022-11-25 17:30:11,544 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1669 mSDsluCounter, 3782 mSDsCounter, 0 mSdLazyCounter, 4584 mSolverCounterSat, 33 mSolverCounterUnsat, 854 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 4283 SdHoareTripleChecker+Invalid, 5471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4584 IncrementalHoareTripleChecker+Invalid, 854 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:30:11,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1672 Valid, 4283 Invalid, 5471 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 4584 Invalid, 854 Unknown, 0 Unchecked, 18.5s Time] [2022-11-25 17:30:11,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2022-11-25 17:30:11,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 1793. [2022-11-25 17:30:11,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1345 states have (on average 1.7769516728624535) internal successors, (2390), 1756 states have internal predecessors, (2390), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-25 17:30:11,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2449 transitions. [2022-11-25 17:30:11,586 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2449 transitions. Word has length 132 [2022-11-25 17:30:11,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:30:11,587 INFO L495 AbstractCegarLoop]: Abstraction has 1793 states and 2449 transitions. [2022-11-25 17:30:11,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:30:11,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2449 transitions. [2022-11-25 17:30:11,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-25 17:30:11,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:30:11,589 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:30:11,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:30:11,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2022-11-25 17:30:12,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 17:30:12,014 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:30:12,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:30:12,015 INFO L85 PathProgramCache]: Analyzing trace with hash 495144562, now seen corresponding path program 1 times [2022-11-25 17:30:12,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:30:12,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626573213] [2022-11-25 17:30:12,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:12,016 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 17:30:12,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:30:12,017 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:30:12,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:30:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:30:13,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 120 conjunts are in the unsatisfiable core [2022-11-25 17:30:13,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:30:13,026 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 17:30:13,502 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 17:30:13,578 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:30:13,578 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 17:30:13,645 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 13 treesize of output 9 [2022-11-25 17:30:13,666 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 17:30:13,907 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 18 treesize of output 10 [2022-11-25 17:30:13,914 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 7 treesize of output 3 [2022-11-25 17:30:17,256 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3620 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_3620) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_3621 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_3621))) (exists ((v_arrayElimCell_31 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_31)))) is different from true [2022-11-25 17:30:17,323 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:30:17,323 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 46 treesize of output 45 [2022-11-25 17:30:17,331 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 22 treesize of output 24 [2022-11-25 17:30:17,433 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 17:30:17,450 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 17:30:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-25 17:30:17,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:30:19,079 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3712 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3712) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-25 17:30:19,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:30:19,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626573213] [2022-11-25 17:30:19,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626573213] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:30:19,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2123628473] [2022-11-25 17:30:19,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:30:19,092 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:30:19,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:30:19,093 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:30:19,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-25 17:32:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:32:21,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 118 conjunts are in the unsatisfiable core [2022-11-25 17:32:21,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:32:21,419 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 17:32:21,720 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 17:32:21,759 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:32:21,759 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 17:32:21,844 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 17:32:21,855 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 13 treesize of output 9 [2022-11-25 17:32:22,132 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 22 treesize of output 10 [2022-11-25 17:32:22,139 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 9 treesize of output 3 [2022-11-25 17:32:25,265 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4191 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_4191))) (exists ((v_ArrVal_4192 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_4192) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_31 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_31)))) is different from true [2022-11-25 17:32:25,342 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:32:25,342 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 46 treesize of output 45 [2022-11-25 17:32:25,351 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 22 treesize of output 24 [2022-11-25 17:32:25,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-25 17:32:25,489 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 19 treesize of output 7 [2022-11-25 17:32:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-25 17:32:25,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:32:26,754 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4283 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4284 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4284) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4283) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_4284 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4284) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd .cse1 (_ bv20 32))))))) is different from false [2022-11-25 17:32:26,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2123628473] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:32:26,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:32:26,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2022-11-25 17:32:26,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606154406] [2022-11-25 17:32:26,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:32:26,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-25 17:32:26,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:32:26,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-25 17:32:26,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=369, Unknown=5, NotChecked=164, Total=600 [2022-11-25 17:32:26,764 INFO L87 Difference]: Start difference. First operand 1793 states and 2449 transitions. Second operand has 21 states, 18 states have (on average 8.38888888888889) internal successors, (151), 17 states have internal predecessors, (151), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 17:32:59,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:32:59,505 INFO L93 Difference]: Finished difference Result 2912 states and 3923 transitions. [2022-11-25 17:32:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 17:32:59,506 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 8.38888888888889) internal successors, (151), 17 states have internal predecessors, (151), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 132 [2022-11-25 17:32:59,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:32:59,513 INFO L225 Difference]: With dead ends: 2912 [2022-11-25 17:32:59,514 INFO L226 Difference]: Without dead ends: 2912 [2022-11-25 17:32:59,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 160 SyntacticMatches, 89 SemanticMatches, 32 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=125, Invalid=754, Unknown=7, NotChecked=236, Total=1122 [2022-11-25 17:32:59,515 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 1995 mSDsluCounter, 6624 mSDsCounter, 0 mSdLazyCounter, 11801 mSolverCounterSat, 29 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2000 SdHoareTripleChecker+Valid, 7414 SdHoareTripleChecker+Invalid, 14802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 11801 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 2964 IncrementalHoareTripleChecker+Unchecked, 31.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:32:59,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2000 Valid, 7414 Invalid, 14802 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 11801 Invalid, 8 Unknown, 2964 Unchecked, 31.8s Time] [2022-11-25 17:32:59,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2022-11-25 17:32:59,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1792. [2022-11-25 17:32:59,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1345 states have (on average 1.7754646840148698) internal successors, (2388), 1755 states have internal predecessors, (2388), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-25 17:32:59,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2447 transitions. [2022-11-25 17:32:59,558 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2447 transitions. Word has length 132 [2022-11-25 17:32:59,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:32:59,559 INFO L495 AbstractCegarLoop]: Abstraction has 1792 states and 2447 transitions. [2022-11-25 17:32:59,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 8.38888888888889) internal successors, (151), 17 states have internal predecessors, (151), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 17:32:59,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2447 transitions. [2022-11-25 17:32:59,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-25 17:32:59,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:32:59,562 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:32:59,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:32:59,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2022-11-25 17:32:59,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 17:32:59,987 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:32:59,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:32:59,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1934250012, now seen corresponding path program 1 times [2022-11-25 17:32:59,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:32:59,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984095937] [2022-11-25 17:32:59,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:32:59,989 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 17:32:59,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:32:59,994 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:33:00,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:33:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:33:01,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-25 17:33:01,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:01,318 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 17:33:01,566 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 17:33:01,566 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 17:33:01,609 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 13 treesize of output 9 [2022-11-25 17:33:01,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-25 17:33:05,057 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:33:05,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:33:05,279 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:33:05,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:33:05,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-25 17:33:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-25 17:33:05,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:33:07,605 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4724 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4724) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2022-11-25 17:33:08,049 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4770 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4770))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4724)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-25 17:33:08,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:33:08,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984095937] [2022-11-25 17:33:08,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984095937] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:33:08,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1252848944] [2022-11-25 17:33:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:33:08,053 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:33:08,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:33:08,054 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:33:08,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2022-11-25 17:33:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:33:14,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-25 17:33:14,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:14,213 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 17:33:14,459 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 17:33:14,459 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 17:33:14,480 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 13 treesize of output 9 [2022-11-25 17:33:14,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-25 17:33:17,730 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:33:17,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:33:17,857 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:33:17,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:33:17,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-25 17:33:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-25 17:33:17,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:33:17,925 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5210 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5210) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2022-11-25 17:33:17,940 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5210 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5210) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-25 17:33:18,386 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5256 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5210 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5256))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5210)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-25 17:33:18,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1252848944] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:33:18,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:33:18,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2022-11-25 17:33:18,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017912986] [2022-11-25 17:33:18,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:33:18,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 17:33:18,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:33:18,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 17:33:18,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=248, Unknown=22, NotChecked=180, Total=506 [2022-11-25 17:33:18,392 INFO L87 Difference]: Start difference. First operand 1792 states and 2447 transitions. Second operand has 15 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:33:41,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:33:41,521 INFO L93 Difference]: Finished difference Result 2264 states and 3047 transitions. [2022-11-25 17:33:41,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 17:33:41,522 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 135 [2022-11-25 17:33:41,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:33:41,526 INFO L225 Difference]: With dead ends: 2264 [2022-11-25 17:33:41,526 INFO L226 Difference]: Without dead ends: 2264 [2022-11-25 17:33:41,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 173 SyntacticMatches, 89 SemanticMatches, 32 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=135, Invalid=663, Unknown=34, NotChecked=290, Total=1122 [2022-11-25 17:33:41,527 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 1662 mSDsluCounter, 4830 mSDsCounter, 0 mSdLazyCounter, 5442 mSolverCounterSat, 32 mSolverCounterUnsat, 936 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 5330 SdHoareTripleChecker+Invalid, 6410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 5442 IncrementalHoareTripleChecker+Invalid, 936 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:33:41,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 5330 Invalid, 6410 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 5442 Invalid, 936 Unknown, 0 Unchecked, 22.3s Time] [2022-11-25 17:33:41,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2022-11-25 17:33:41,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 1791. [2022-11-25 17:33:41,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1791 states, 1345 states have (on average 1.7739776951672863) internal successors, (2386), 1754 states have internal predecessors, (2386), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-25 17:33:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2445 transitions. [2022-11-25 17:33:41,558 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2445 transitions. Word has length 135 [2022-11-25 17:33:41,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:33:41,558 INFO L495 AbstractCegarLoop]: Abstraction has 1791 states and 2445 transitions. [2022-11-25 17:33:41,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:33:41,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2445 transitions. [2022-11-25 17:33:41,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-25 17:33:41,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:33:41,561 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:33:41,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:33:41,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2022-11-25 17:33:41,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 17:33:41,978 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:33:41,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:33:41,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1934250013, now seen corresponding path program 1 times [2022-11-25 17:33:41,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:33:41,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758964882] [2022-11-25 17:33:41,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:33:41,979 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 17:33:41,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:33:41,980 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:33:41,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:33:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:33:43,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 123 conjunts are in the unsatisfiable core [2022-11-25 17:33:43,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:43,302 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 17:33:43,830 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 17:33:43,890 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:33:43,891 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 17:33:43,949 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 13 treesize of output 9 [2022-11-25 17:33:43,966 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 17:33:44,166 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 18 treesize of output 10 [2022-11-25 17:33:44,172 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 7 treesize of output 3 [2022-11-25 17:33:47,397 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5740 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_5740))) (exists ((v_arrayElimCell_59 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_59) (_ bv44 32))) (exists ((v_ArrVal_5741 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_5741) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-25 17:33:47,471 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:33:47,471 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 46 treesize of output 45 [2022-11-25 17:33:47,479 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 22 treesize of output 24 [2022-11-25 17:33:47,710 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:33:47,711 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 46 treesize of output 45 [2022-11-25 17:33:47,725 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 22 treesize of output 24 [2022-11-25 17:33:47,759 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 17:33:47,770 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 17:33:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-25 17:33:47,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:33:48,122 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5743 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5743) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-25 17:33:48,173 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5743 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_5743) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2022-11-25 17:33:49,534 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5743 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5834))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5835) .cse0 v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5743) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5835) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2022-11-25 17:33:49,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:33:49,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758964882] [2022-11-25 17:33:49,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758964882] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:33:49,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1217639446] [2022-11-25 17:33:49,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:33:49,546 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:33:49,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:33:49,548 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:33:49,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-11-25 17:33:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:33:55,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-25 17:33:55,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:33:55,448 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 17:33:55,455 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 17:33:56,510 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:33:56,520 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 17:33:56,530 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 17:33:56,667 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 17:33:56,685 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 17:33:56,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-25 17:33:56,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-25 17:34:03,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:34:03,187 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 16 treesize of output 18 [2022-11-25 17:34:03,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:34:03,637 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 82 treesize of output 60 [2022-11-25 17:34:03,665 INFO L321 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-11-25 17:34:03,665 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 60 treesize of output 44 [2022-11-25 17:34:03,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-25 17:34:03,888 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 17:34:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-25 17:34:04,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:34:04,690 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 231 treesize of output 159 [2022-11-25 17:34:08,542 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6327 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_77 (_ BitVec 32))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6327))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (or (forall ((v_ArrVal_6278 (_ BitVec 32))) (let ((.cse0 (select (select (store .cse1 v_arrayElimCell_77 (store (select .cse1 v_arrayElimCell_77) (bvadd (_ bv16 32) .cse2) v_ArrVal_6278)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (not (bvule (bvadd .cse2 (_ bv20 32)) (select |c_#length| v_arrayElimCell_77))))))) (forall ((v_ArrVal_6327 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_77 (_ BitVec 32))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6327))) (let ((.cse7 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (.cse5 (select |c_#length| v_arrayElimCell_77))) (or (forall ((v_prenex_6 (_ BitVec 32))) (let ((.cse4 (bvadd (_ bv8 32) (select (select (store .cse6 v_arrayElimCell_77 (store (select .cse6 v_arrayElimCell_77) (bvadd (_ bv16 32) .cse7) v_prenex_6)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (or (forall ((v_ArrVal_6279 (_ BitVec 32))) (bvule .cse4 (select |c_#length| v_ArrVal_6279))) (bvule .cse4 .cse5)))) (not (bvule (bvadd .cse7 (_ bv20 32)) .cse5)))))))) is different from false [2022-11-25 17:34:08,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1217639446] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:34:08,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:34:08,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 31 [2022-11-25 17:34:08,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001390365] [2022-11-25 17:34:08,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:34:08,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 17:34:08,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:34:08,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 17:34:08,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1061, Unknown=35, NotChecked=350, Total=1560 [2022-11-25 17:34:08,573 INFO L87 Difference]: Start difference. First operand 1791 states and 2445 transitions. Second operand has 32 states, 29 states have (on average 5.827586206896552) internal successors, (169), 26 states have internal predecessors, (169), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 17:35:05,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:05,954 INFO L93 Difference]: Finished difference Result 2444 states and 3327 transitions. [2022-11-25 17:35:05,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 17:35:05,955 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 5.827586206896552) internal successors, (169), 26 states have internal predecessors, (169), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 135 [2022-11-25 17:35:05,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:05,958 INFO L225 Difference]: With dead ends: 2444 [2022-11-25 17:35:05,959 INFO L226 Difference]: Without dead ends: 2444 [2022-11-25 17:35:05,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 160 SyntacticMatches, 86 SemanticMatches, 47 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=206, Invalid=1660, Unknown=46, NotChecked=440, Total=2352 [2022-11-25 17:35:05,960 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 2402 mSDsluCounter, 10945 mSDsCounter, 0 mSdLazyCounter, 15782 mSolverCounterSat, 47 mSolverCounterUnsat, 438 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2405 SdHoareTripleChecker+Valid, 11972 SdHoareTripleChecker+Invalid, 17244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 15782 IncrementalHoareTripleChecker+Invalid, 438 IncrementalHoareTripleChecker+Unknown, 977 IncrementalHoareTripleChecker+Unchecked, 55.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:05,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2405 Valid, 11972 Invalid, 17244 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [47 Valid, 15782 Invalid, 438 Unknown, 977 Unchecked, 55.7s Time] [2022-11-25 17:35:05,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2022-11-25 17:35:06,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 1790. [2022-11-25 17:35:06,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1790 states, 1345 states have (on average 1.7724907063197026) internal successors, (2384), 1753 states have internal predecessors, (2384), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-25 17:35:06,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 2443 transitions. [2022-11-25 17:35:06,027 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 2443 transitions. Word has length 135 [2022-11-25 17:35:06,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:06,027 INFO L495 AbstractCegarLoop]: Abstraction has 1790 states and 2443 transitions. [2022-11-25 17:35:06,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 5.827586206896552) internal successors, (169), 26 states have internal predecessors, (169), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 17:35:06,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 2443 transitions. [2022-11-25 17:35:06,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-25 17:35:06,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:06,029 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:35:06,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2022-11-25 17:35:06,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:35:06,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:35:06,451 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:35:06,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:06,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1961199032, now seen corresponding path program 1 times [2022-11-25 17:35:06,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:06,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448997181] [2022-11-25 17:35:06,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:06,452 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 17:35:06,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:06,453 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:35:06,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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)] Waiting until timeout for monitored process [2022-11-25 17:35:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:07,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-25 17:35:07,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:07,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 17:35:08,145 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 17:35:08,145 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 17:35:08,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:35:08,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-25 17:35:11,757 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:35:11,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:35:11,950 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:35:11,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:35:12,110 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:35:12,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:35:12,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-25 17:35:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-25 17:35:12,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:35:12,381 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_6783) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2022-11-25 17:35:12,398 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6783) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-25 17:35:12,425 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6782 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_6782))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6783)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-25 17:35:12,447 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6782 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6782))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6783)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-25 17:35:12,940 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6829 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6782 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6829))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6782)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6783)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-25 17:35:12,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:35:12,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448997181] [2022-11-25 17:35:12,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448997181] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:35:12,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [435707784] [2022-11-25 17:35:12,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:12,947 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:35:12,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:35:12,951 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:35:12,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-11-25 17:35:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:19,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-25 17:35:19,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:19,699 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 17:35:19,964 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 17:35:19,964 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 17:35:19,987 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 13 treesize of output 9 [2022-11-25 17:35:20,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-25 17:35:23,349 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:35:23,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:35:23,470 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:35:23,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:35:23,546 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:35:23,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:35:23,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-25 17:35:23,586 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-25 17:35:23,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:35:25,742 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7285 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7285) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2022-11-25 17:35:25,765 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7285 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7284))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7285)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-25 17:35:25,783 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7285 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7284))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7285)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-25 17:35:26,244 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7331 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7331))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7284)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7285)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-25 17:35:26,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [435707784] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:35:26,249 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:35:26,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2022-11-25 17:35:26,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927126910] [2022-11-25 17:35:26,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:35:26,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 17:35:26,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:35:26,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 17:35:26,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=283, Unknown=26, NotChecked=378, Total=756 [2022-11-25 17:35:26,251 INFO L87 Difference]: Start difference. First operand 1790 states and 2443 transitions. Second operand has 16 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:35:50,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:35:50,090 INFO L93 Difference]: Finished difference Result 2262 states and 3043 transitions. [2022-11-25 17:35:50,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 17:35:50,091 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 138 [2022-11-25 17:35:50,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:35:50,096 INFO L225 Difference]: With dead ends: 2262 [2022-11-25 17:35:50,096 INFO L226 Difference]: Without dead ends: 2262 [2022-11-25 17:35:50,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 180 SyntacticMatches, 89 SemanticMatches, 38 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=157, Invalid=770, Unknown=39, NotChecked=594, Total=1560 [2022-11-25 17:35:50,097 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 1655 mSDsluCounter, 5280 mSDsCounter, 0 mSdLazyCounter, 5939 mSolverCounterSat, 33 mSolverCounterUnsat, 945 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 5779 SdHoareTripleChecker+Invalid, 6917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 5939 IncrementalHoareTripleChecker+Invalid, 945 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:35:50,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 5779 Invalid, 6917 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 5939 Invalid, 945 Unknown, 0 Unchecked, 23.0s Time] [2022-11-25 17:35:50,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2022-11-25 17:35:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1789. [2022-11-25 17:35:50,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1789 states, 1345 states have (on average 1.771003717472119) internal successors, (2382), 1752 states have internal predecessors, (2382), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-25 17:35:50,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 2441 transitions. [2022-11-25 17:35:50,127 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 2441 transitions. Word has length 138 [2022-11-25 17:35:50,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:35:50,127 INFO L495 AbstractCegarLoop]: Abstraction has 1789 states and 2441 transitions. [2022-11-25 17:35:50,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:35:50,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 2441 transitions. [2022-11-25 17:35:50,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-25 17:35:50,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:35:50,129 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:35:50,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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)] Forceful destruction successful, exit code 0 [2022-11-25 17:35:50,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2022-11-25 17:35:50,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 17:35:50,543 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:35:50,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:35:50,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1961199033, now seen corresponding path program 1 times [2022-11-25 17:35:50,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:35:50,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525959293] [2022-11-25 17:35:50,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:35:50,544 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 17:35:50,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:35:50,545 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:35:50,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:35:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:35:51,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 126 conjunts are in the unsatisfiable core [2022-11-25 17:35:51,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:35:51,937 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 17:35:52,399 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 17:35:52,463 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:35:52,464 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 17:35:52,517 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 17:35:52,527 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 13 treesize of output 9 [2022-11-25 17:35:52,733 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 18 treesize of output 10 [2022-11-25 17:35:52,741 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 7 treesize of output 3 [2022-11-25 17:35:55,787 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_94 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_94) (_ bv44 32))) (exists ((v_ArrVal_7830 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_7830) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_7831 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_7831)))) is different from true [2022-11-25 17:35:55,858 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:35:55,859 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 46 treesize of output 45 [2022-11-25 17:35:55,876 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 22 treesize of output 24 [2022-11-25 17:35:56,113 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:35:56,114 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 46 treesize of output 45 [2022-11-25 17:35:56,127 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 22 treesize of output 24 [2022-11-25 17:35:56,280 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:35:56,280 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 46 treesize of output 45 [2022-11-25 17:35:56,290 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 22 treesize of output 24 [2022-11-25 17:35:56,330 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 17:35:56,333 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 17:35:56,399 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-25 17:35:56,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:35:56,691 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-25 17:35:56,729 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2022-11-25 17:35:56,815 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7832))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7833) .cse0 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7833) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7832) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv8 32)) (bvadd .cse3 (_ bv12 32))))))) is different from false [2022-11-25 17:35:56,937 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_7833) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_7832) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_7832))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_7833) .cse3 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2022-11-25 17:36:00,072 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7927 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7926 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7927))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7926) .cse1 v_ArrVal_7833) (select (select (store .cse2 .cse1 v_ArrVal_7832) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7834))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7927 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7926 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7927))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_7832))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7926) .cse4 v_ArrVal_7833) .cse5 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2022-11-25 17:36:00,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:36:00,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525959293] [2022-11-25 17:36:00,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525959293] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:36:00,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [196163104] [2022-11-25 17:36:00,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:36:00,093 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:36:00,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:36:00,095 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:36:00,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2022-11-25 17:38:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:38:06,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 125 conjunts are in the unsatisfiable core [2022-11-25 17:38:06,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:38:06,203 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 17:38:06,790 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 17:38:06,846 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 17:38:06,846 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 17:38:06,985 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 17:38:07,000 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 13 treesize of output 9 [2022-11-25 17:38:07,390 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 22 treesize of output 10 [2022-11-25 17:38:07,406 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 9 treesize of output 3 [2022-11-25 17:38:12,028 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:38:12,028 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 46 treesize of output 45 [2022-11-25 17:38:12,051 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 22 treesize of output 24 [2022-11-25 17:38:12,431 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:38:12,432 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 46 treesize of output 45 [2022-11-25 17:38:12,454 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 22 treesize of output 24 [2022-11-25 17:38:12,709 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:38:12,709 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 46 treesize of output 45 [2022-11-25 17:38:12,719 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 22 treesize of output 24 [2022-11-25 17:38:12,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-25 17:38:12,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-25 17:38:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-25 17:38:12,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:38:12,892 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-25 17:38:12,944 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2022-11-25 17:38:13,207 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8428) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8429) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8429))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8428) .cse2 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2022-11-25 17:38:13,310 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8429))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8428) .cse1 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8428) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8429) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2022-11-25 17:38:15,184 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8523 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8522))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_8429))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8523) .cse0 v_ArrVal_8428) .cse1 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8523 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8522))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8523) .cse6 v_ArrVal_8428) (select (select (store .cse7 .cse6 v_ArrVal_8429) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8431))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd .cse5 (_ bv12 32))))))) is different from false [2022-11-25 17:38:15,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [196163104] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:38:15,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:38:15,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 24 [2022-11-25 17:38:15,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214465742] [2022-11-25 17:38:15,208 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:38:15,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-25 17:38:15,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:38:15,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-25 17:38:15,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=569, Unknown=26, NotChecked=638, Total=1332 [2022-11-25 17:38:15,211 INFO L87 Difference]: Start difference. First operand 1789 states and 2441 transitions. Second operand has 25 states, 22 states have (on average 7.409090909090909) internal successors, (163), 21 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 17:39:01,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:39:01,411 INFO L93 Difference]: Finished difference Result 2908 states and 3915 transitions. [2022-11-25 17:39:01,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 17:39:01,412 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 7.409090909090909) internal successors, (163), 21 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 138 [2022-11-25 17:39:01,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:39:01,417 INFO L225 Difference]: With dead ends: 2908 [2022-11-25 17:39:01,418 INFO L226 Difference]: Without dead ends: 2908 [2022-11-25 17:39:01,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 172 SyntacticMatches, 89 SemanticMatches, 47 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=190, Invalid=1223, Unknown=37, NotChecked=902, Total=2352 [2022-11-25 17:39:01,419 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 2573 mSDsluCounter, 5501 mSDsCounter, 0 mSdLazyCounter, 10193 mSolverCounterSat, 34 mSolverCounterUnsat, 563 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2578 SdHoareTripleChecker+Valid, 6290 SdHoareTripleChecker+Invalid, 12671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 10193 IncrementalHoareTripleChecker+Invalid, 563 IncrementalHoareTripleChecker+Unknown, 1881 IncrementalHoareTripleChecker+Unchecked, 44.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:39:01,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2578 Valid, 6290 Invalid, 12671 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 10193 Invalid, 563 Unknown, 1881 Unchecked, 44.6s Time] [2022-11-25 17:39:01,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2022-11-25 17:39:01,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1788. [2022-11-25 17:39:01,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1345 states have (on average 1.7695167286245352) internal successors, (2380), 1751 states have internal predecessors, (2380), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-25 17:39:01,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2439 transitions. [2022-11-25 17:39:01,466 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2439 transitions. Word has length 138 [2022-11-25 17:39:01,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:39:01,467 INFO L495 AbstractCegarLoop]: Abstraction has 1788 states and 2439 transitions. [2022-11-25 17:39:01,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 7.409090909090909) internal successors, (163), 21 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 17:39:01,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2439 transitions. [2022-11-25 17:39:01,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-25 17:39:01,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:39:01,469 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:39:01,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2022-11-25 17:39:01,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:39:01,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:39:01,897 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:39:01,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:39:01,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1640576451, now seen corresponding path program 1 times [2022-11-25 17:39:01,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:39:01,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047581869] [2022-11-25 17:39:01,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:01,899 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 17:39:01,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:39:01,901 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:39:01,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:39:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:03,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-25 17:39:03,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:39:03,451 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 17:39:03,934 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 17:39:03,935 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 17:39:04,006 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 13 treesize of output 9 [2022-11-25 17:39:04,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-25 17:39:08,975 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:39:08,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:39:09,264 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:39:09,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:39:09,487 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:39:09,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:39:09,733 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:39:09,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:39:09,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-25 17:39:09,894 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-25 17:39:09,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:39:12,276 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8995) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2022-11-25 17:39:12,307 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8994))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-25 17:39:12,331 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8994))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-25 17:39:12,369 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8993 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8993))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8994)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2022-11-25 17:39:12,399 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8993 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8993))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8994)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-25 17:39:12,972 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9041 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8993 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9041))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8993)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8994)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-25 17:39:12,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:39:12,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047581869] [2022-11-25 17:39:12,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047581869] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:39:12,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [285299500] [2022-11-25 17:39:12,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:39:12,979 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 17:39:12,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 [2022-11-25 17:39:12,981 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 17:39:12,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2022-11-25 17:39:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:39:23,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-25 17:39:23,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:39:23,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-25 17:39:24,060 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 17:39:24,060 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 17:39:24,088 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 13 treesize of output 9 [2022-11-25 17:39:24,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-25 17:39:28,750 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:39:28,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:39:28,935 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:39:28,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:39:29,048 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:39:29,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:39:29,153 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 17:39:29,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:39:29,203 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 33 treesize of output 15 [2022-11-25 17:39:29,222 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-25 17:39:29,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:39:29,260 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_9513) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-25 17:39:29,282 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_9513) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-25 17:39:29,314 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9512 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_9512))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9513)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-25 17:39:29,340 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9512 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9512))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9513)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-25 17:39:29,622 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9512 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9511 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9511))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9512)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9513)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-25 17:39:30,247 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9559 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9512 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9511 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9559))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9511)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9512)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9513)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-25 17:39:30,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [285299500] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:39:30,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:39:30,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2022-11-25 17:39:30,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716837734] [2022-11-25 17:39:30,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:39:30,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 17:39:30,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:39:30,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 17:39:30,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=347, Unknown=38, NotChecked=588, Total=1056 [2022-11-25 17:39:30,257 INFO L87 Difference]: Start difference. First operand 1788 states and 2439 transitions. Second operand has 17 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:39:59,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:39:59,744 INFO L93 Difference]: Finished difference Result 2260 states and 3039 transitions. [2022-11-25 17:39:59,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-25 17:39:59,745 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 141 [2022-11-25 17:39:59,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:39:59,748 INFO L225 Difference]: With dead ends: 2260 [2022-11-25 17:39:59,748 INFO L226 Difference]: Without dead ends: 2260 [2022-11-25 17:39:59,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 187 SyntacticMatches, 89 SemanticMatches, 44 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=181, Invalid=937, Unknown=52, NotChecked=900, Total=2070 [2022-11-25 17:39:59,750 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 1646 mSDsluCounter, 4233 mSDsCounter, 0 mSdLazyCounter, 5098 mSolverCounterSat, 34 mSolverCounterUnsat, 835 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 4731 SdHoareTripleChecker+Invalid, 5967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 5098 IncrementalHoareTripleChecker+Invalid, 835 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:39:59,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 4731 Invalid, 5967 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 5098 Invalid, 835 Unknown, 0 Unchecked, 28.0s Time] [2022-11-25 17:39:59,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2022-11-25 17:39:59,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 1787. [2022-11-25 17:39:59,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1787 states, 1345 states have (on average 1.7680297397769518) internal successors, (2378), 1750 states have internal predecessors, (2378), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-25 17:39:59,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 2437 transitions. [2022-11-25 17:39:59,788 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 2437 transitions. Word has length 141 [2022-11-25 17:39:59,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:39:59,789 INFO L495 AbstractCegarLoop]: Abstraction has 1787 states and 2437 transitions. [2022-11-25 17:39:59,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 17:39:59,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 2437 transitions. [2022-11-25 17:39:59,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-25 17:39:59,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:39:59,791 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:39:59,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:40:00,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2022-11-25 17:40:00,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/cvc4 --incremental --print-success --lang smt [2022-11-25 17:40:00,215 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2022-11-25 17:40:00,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:40:00,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1640576452, now seen corresponding path program 1 times [2022-11-25 17:40:00,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:40:00,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079038170] [2022-11-25 17:40:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:40:00,217 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 17:40:00,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:40:00,218 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:40:00,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7927c88d-1513-4f33-8c71-3ae58d9b54c8/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 17:40:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:40:02,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 127 conjunts are in the unsatisfiable core [2022-11-25 17:40:02,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:40:02,245 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